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Dr. Mary Deherrera Codo, MD

Accepting New Patients

(Dr. Mary D. Codo, MD)

(813 Ratings)

Specializes in: Adult Endocrinology

University of Illinois College of Medicine (1988)

Professional interests include: polycystic ovary syndrome (PCOS), diabetes, parathyroid disease, and more.

1020 E Ogden Avenue
Naperville, IL 60563

(630) 469-9200

Dr. Mary Deherrera Codo, MD is an endocrinologist in Naperville, IL specializing in adult endocrinology. She graduated from University of Illinois College of Medicine in 1988 and has 38 years of experience. Dr. Mary Deherrera Codo, MD is affiliated with Duly Health and Care.

Office Locations

1020 E Ogden Avenue
Naperville, IL 60563

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Some issues Dr. Mary Deherrera Codo, MD can help you with:

Polycystic Ovary Syndrome (PCOS)

Polycystic ovarian syndrome is a common endocrine disorder that causes symptoms such as acne, facial hair, and weight gain. It is often diagnosed when patients experience problems getting pregnant, because PCOS can interfere with ovulation. There is no cure for PCOS, but there are effective treatments that can lessen the severity of the symptoms.

Despite the name, not everyone with polycystic ovarian syndrome develops cysts on their ovaries. It is also possible to have ovarian cysts without having PCOS. The symptoms of polycystic ovarian syndrome are actually related to insulin resistance, a condition where the insulin made by the body is not effectively recognized by the cells. This causes the pancreas to release higher levels of insulin in order to keep blood sugar levels stable, and the excess insulin interferes with hormone production in the pituitary and ovaries, causing the PCOS symptoms.

The symptoms of PCOS include:

Weight gain
Acne
Facial or body hair
Thinning head hair
Missing or irregular periods
Infertility

PCOS is a syndrome, which means that if patients have PCOS, they might not have each and every symptom. Even a few of them might be enough to have physicians check for polycystic ovarian syndrome. A doctor might perform an exam and order blood tests to measure hormone levels.

Treatment for PCOS may include:

Insulin sensitizers, which help the body use insulin more effectively, lowering hormone levels. The most commonly used insulin sensitizer is metformin.
Weight loss. Being overweight does not cause PCOS, and PCOS can make losing weight difficult. Still, weight loss can improve symptoms for many women.
Birth control pills to regulate menstruation and sometimes reduce symptoms such as acne.
Fertility medications, especially medications to stimulate ovulation such as clomiphene.
Anti-androgen medications, which work to treat symptoms such as acne and facial hair.
Low-carb diets, which work similarly to insulin sensitizers to lower hormone levels and help reduce weight.
Ovarian drilling or resectioning, surgical procedures sometimes performed if infertility is a persistent problem. These procedures open up the wall of the ovary to temporarily make ovulation more likely.

Polycystic ovarian syndrome is one of the most common endocrine disorders affecting women. Left untreated, it can increase the risk of diabetes, heart disease, and certain cancers. Fortunately there are many good treatment options available.

Thyroid Problems

Thyroid problems are a group of conditions that alter hormone regulation and metabolism. The thyroid is a small, butterfly-shaped gland located in the lower neck, just below the Adam's apple (laryngeal prominence) and larynx (voice box). Despite its small size, the thyroid has an outsized effect on the body by regulating hormones that control metabolism. Metabolism is the body's process of converting consumed food into fuel to power the entire body. Heart rate, weight, cholesterol, body temperature, and even physical growth and development are all affected by the metabolism.

When the thyroid malfunctions, the body is unable to properly process and allocate energy. Thyroid problems, such as hyperthyroidism (overactive thyroid) and hypothyroidism (underactive thyroid), cause irregular metabolism. In some cases, the body produces antibodies that attack the thyroid cells for unknown reasons. The damaged thyroid responds by releasing either too little or too much T3 and T4 thyroid hormones. Thyroid malfunctions may also arise from genetic causes or iodine deficiency. Thyroid problems may include:

Hashimoto's thyroiditis, an autoimmune disease that causes hypothyroidism
Graves' disease, an autoimmune disease that causes hyperthyroidism
Goiter
Thyroid nodule
Thyroid cancer

Hashimoto's is the leading cause of hypothyroidism, which is when the thyroid does not produce enough hormones to stimulate adequate metabolism. The condition is diagnosed by blood tests that measure TSH (thyroid stimulating hormone) and detect Hashimoto's antibodies. Symptoms of hypothyroidism include sluggish metabolism, inflammation, fatigue, weight gain, brittle hair, dry skin, and sensitivity to cold. To supplement impaired thyroid function, patients with Hashimoto's are typically prescribed synthetic thyroid hormone pills. Such patients may need to consume synthetic thyroids for the rest of their lives. Other treatments may include dietary changes, such as the avoidance of certain foods and medication to reduce inflammation. Frequent blood tests can inform patients if their TSH levels are within a normal range.

Grave's disease is most frequently the cause of hyperthyroidism, which is when the thyroid produces too many hormones, overstimulating one's metabolism. The condition is also diagnosed by blood tests that measure TSH and detect Grave's antibodies. Elevated heart rate, high blood pressure, sweating, bulging eyes, and weight loss are common symptoms of hyperthyroidism. Treatments for hyperthyroidism include oral radioactive iodine, which slowly shrinks the thyroid, slowing the production of excess thyroid hormone. Other anti-thyroid medications such as methimazole (Tapazole) also reduce the production of thyroid hormones. Blood pressure medications known as beta blockers can ease the increased heart rate caused by hyperthyroidism. If treatments are unsuccessful, patients may be prescribed a thyroidectomy, or surgery to remove part or all of the thyroid. Some patients with hyperthyroidism may require ophthalmological (eye medicine) treatments such as eye drops, prednisone, and surgery to reduce eye swelling and bulging.

Untreated thyroid disorders frequently lead to goiters or thyroid nodules. A thyroid goiter is a large lump that can be felt near the base of the neck and is made of swollen thyroid tissue or nodules (excess cell growth). Nodules and goiters are diagnosed by CT scan or ultrasound. Obstructive goiters can cause pain, coughing, and abnormal breathing. The most common cause of goiters is hyperthyroidism (overactive thyroid). However, Hashimoto's is also known to cause goiters or nodules. Goiters develop from continued damage from antibodies to the thyroid over time. At times, a goiter can result from a cancerous thyroid tumor. Most goiters and nodules are themselves benign.

The exact causes of thyroid cancer are unknown. People who develop thyroid cancer may or may not have another thyroid problem such as Hashimoto's or Grave's disease. Symptoms of thyroid cancer include a nodule that can be felt on the neck, hoarseness, difficulty swallowing, swelling in the neck, and neck and throat pain. CT and MRI scans are used to diagnose thyroid cancer. There are four types of thyroid cancer which vary in intensity. Thyroidectomy (thyroid removal surgery) is usually prescribed to treat thyroid cancer.

Thyroid problems are often long-term conditions that require some form of treatment. With regular monitoring and medication, many people with thyroid problems are able to lead active and fulfilling lives.

In The News

“Kevin Madsen is a maternal fetal medicine physician, Mary DeHerrera Codo and Falguni Vasa, both endocrinologists, are now practicing at DuPage Medical Group, an independent, multi-specialty...”—"Businessman tracks journey from India, Kenya to Allant CEO", Daily Herald, March 2016

Noteworthy Medicare Patient Procedures Performed by Dr. Mary Deherrera Codo, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

blood tests

By Affordability:

microalbumin test

microalbumin urine test

In 2023, among providers in related specialties within Illinois, Dr. Mary Deherrera Codo, MD performed more blood tests procedures for Medicare patients than 95% of them and she also had a list price for microalbumin test, and microalbumin urine test that was lower than the list prices billed to Medicare by 95% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Affordability:

creatinine urine test

parathyroid hormone test

In 2023, Dr. Mary Deherrera Codo, MD had a list price for creatinine urine test, and parathyroid hormone (PTH) test that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Illinois. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

A1C test

blood draw

phlebotomy for lab tests

screening test

thyroid blood test

By Affordability:

albumin test

blood draw

blood draw for lab tests

cholesterol screening

cortisol test

creatinine test

kidney function tests

lipid profile

phlebotomy for lab tests

thyroid blood test

thyroid function tests

venipuncture

vitamin D test

In 2012, among providers in related specialties within Illinois, Dr. Mary Deherrera Codo, MD performed more A1C test, blood draw, phlebotomy for lab tests, screening test, and thyroid blood test procedures for Medicare patients than 75% of them and she also had a list price for albumin test, blood draw, blood draw for lab tests, cholesterol screening, cortisol test, creatinine test, kidney function tests, lipid profile, phlebotomy for lab tests, thyroid blood test, thyroid function tests, venipuncture (phlebotomy), and vitamin D test that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

doctor visit	416
hospital care	379
inpatient care	379

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

doctor visit	479
hospital care	338
inpatient care	338

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	134
Female	215

**Ethnicity**
Non-Hispanic White	307
Black	13
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	186
From 75 to 84	105
85 and over	34
Less than 65	24

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	54
Depression	21
Chronic Kidney Disease	36
Asthma	8
Osteoperosis	17
Atrial Fibrilation	18
Heart Failure	26
Chronic Obstructive Pulmonary Disease	15
Diabetes	68
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

doctor visit	548
hospital care	362
inpatient care	362

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	139
Female	224

**Ethnicity**
Non-Hispanic White	311
Black	17
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	196
From 75 to 84	102
85 and over	44
Less than 65	21

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	57
Depression	26
Chronic Kidney Disease	39
Asthma	10
Osteoperosis	16
Atrial Fibrilation	22
Heart Failure	29
Chronic Obstructive Pulmonary Disease	15
Diabetes	66
Dementia	13
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

doctor visit	416
hospital care	236
inpatient care	236

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	214
Female	368

**Ethnicity**
Non-Hispanic White	516
Black	0
Hispanic	0
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	326
From 75 to 84	170
85 and over	62
Less than 65	24

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	58
Depression	23
Chronic Kidney Disease	42
Asthma	13
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	26
Chronic Obstructive Pulmonary Disease	16
Diabetes	65
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2016 were hospital care, inpatient care, lab tests and blood draw.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	83
diabetes management	52
doctor visit	600
hospital care	219
inpatient care	219
lab tests	169
preventive care	52
thyroid function tests	62

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	135
Female	240

**Ethnicity**
Non-Hispanic White	330
Black	16
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	105
85 and over	43
Less than 65	29

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2016

Hypertension	75
High Cholesterol	73
Stroke	5
Ischemic Heart Disease	54
Depression	23
Chronic Kidney Disease	50
Asthma	16
Osteoperosis	17
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	14
Diabetes	60
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2017 were lab tests, hospital care, inpatient care and preventive care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	184
diabetes management	190
doctor visit	618
hospital care	279
inpatient care	279
lab tests	572
preventive care	213
thyroid function tests	198

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	141
Female	261

**Ethnicity**
Non-Hispanic White	341
Black	23
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	220
From 75 to 84	126
85 and over	29
Less than 65	27

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2017

Hypertension	75
High Cholesterol	65
Stroke	4
Ischemic Heart Disease	51
Depression	25
Chronic Kidney Disease	58
Asthma	8
Osteoperosis	18
Atrial Fibrilation	20
Heart Failure	28
Chronic Obstructive Pulmonary Disease	16
Diabetes	60
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2018 were lab tests, thyroid function tests, preventive care and hospital care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	240
diabetes management	232
doctor visit	742
hospital care	246
inpatient care	246
lab tests	762
preventive care	251
thyroid function tests	261

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	140
Female	315

**Ethnicity**
Non-Hispanic White	389
Black	20
Hispanic	15
Asian	19
Other	12
Native American	0

**Age**
From 65 to 74	238
From 75 to 84	150
85 and over	41
Less than 65	26

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	44
Depression	23
Chronic Kidney Disease	50
Asthma	7
Osteoperosis	18
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	54
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2019 were lab tests, thyroid function tests, blood draw and preventive care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	344
diabetes management	281
doctor visit	813
hospital care	239
inpatient care	239
lab tests	1127
preventive care	323
thyroid function tests	351

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	152
Female	360

**Ethnicity**
Non-Hispanic White	434
Black	24
Hispanic	18
Asian	22
Other	14
Native American	0

**Age**
From 65 to 74	260
From 75 to 84	175
85 and over	41
Less than 65	36

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2019

Hypertension	74
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	44
Depression	26
Chronic Kidney Disease	52
Asthma	6
Osteoperosis	22
Atrial Fibrilation	16
Heart Failure	25
Chronic Obstructive Pulmonary Disease	13
Diabetes	57
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2020 were lab tests, thyroid function tests, preventive care and blood draw.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	342
diabetes management	292
doctor visit	673
hospital care	219
inpatient care	219
lab tests	1241
preventive care	352
thyroid function tests	451
vaccines	22

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	169
Female	376

**Ethnicity**
Non-Hispanic White	471
Black	21
Hispanic	0
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	286
From 75 to 84	180
85 and over	41
Less than 65	38

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2020

Hypertension	74
High Cholesterol	71
Stroke	6
Ischemic Heart Disease	40
Depression	21
Chronic Kidney Disease	53
Asthma	7
Osteoperosis	18
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	10
Diabetes	56
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2021 were lab tests, preventive care, thyroid function tests and blood draw.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	389
diabetes management	336
doctor visit	780
hospital care	34
inpatient care	34
lab tests	1379
preventive care	408
thyroid function tests	407
vaccines	16

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	168
Female	386

**Ethnicity**
Non-Hispanic White	474
Black	22
Hispanic	17
Asian	25
Other	16
Native American	0

**Age**
From 65 to 74	318
From 75 to 84	165
85 and over	37
Less than 65	34

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2021

Hypertension	72
High Cholesterol	71
Stroke	3
Ischemic Heart Disease	36
Depression	19
Chronic Kidney Disease	53
Asthma	8
Osteoperosis	22
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	10
Diabetes	54
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2022 were lab tests, thyroid function tests, blood draw and preventive care.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	429
diabetes management	358
doctor visit	751
lab tests	1512
preventive care	399
thyroid function tests	501

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	162
Female	395

**Ethnicity**
Non-Hispanic White	465
Black	27
Hispanic	25
Asian	27
Other	13
Native American	0

**Age**
From 65 to 74	306
From 75 to 84	180
85 and over	39
Less than 65	32

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2022

Hypertension	74
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	31
Asthma	9
Osteoperosis	27
Atrial Fibrilation	16
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	54
Dementia	3
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL during 2023 were lab tests, thyroid function tests, preventive care and blood draw.

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

blood draw	395
diabetes management	371
doctor visit	708
lab tests	1603
preventive care	440
thyroid function tests	553

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	168
Female	384

**Ethnicity**
Non-Hispanic White	460
Black	23
Hispanic	19
Asian	30
Other	20
Native American	0

**Age**
From 65 to 74	311
From 75 to 84	176
85 and over	40
Less than 65	25

Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD in 2023

Hypertension	74
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	34
Depression	19
Chronic Kidney Disease	32
Asthma	8
Osteoperosis	28
Atrial Fibrilation	16
Heart Failure	19
Chronic Obstructive Pulmonary Disease	10
Diabetes	52
Dementia	5
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Mary Deherrera Codo, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mary Deherrera Codo, MD treated as an endocrinologist in Naperville, IL were lab tests, thyroid function tests, preventive care and blood draw.

blood draw	300
diabetes management	264
doctor visit	628
hospital care	255
inpatient care	255
lab tests	1045
preventive care	304
thyroid function tests	348
vaccines	19

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Mary Deherrera Codo, MD.

**Gender**
Male	143
Female	293

**Ethnicity**
Black / African American	17
Asian / Pacific Islander	14
Non-Hispanic White	374
Hispanic	12
Native American / Alaskan Native	0
Other	6

**Age**
75 to 84	136
85 and over	37
Less than 65	26
65 to 74	237

Average of Total of Conditions of Medicare patients treated by Dr. Mary Deherrera Codo, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Mary Deherrera Codo, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	68
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	42
Depression	20
Chronic Kidney Disease	41
Asthma	8
Osteoporosis	18
Heart Failure	22
Chronic Obstructive Pulmonary Disease	12
Diabetes	53
Atrial Fibrillation	15
Cancer	11
Dementia	7

Education & Training

Dr. Mary Deherrera Codo, MD graduated from University of Illinois College of Medicine in 1988. She completed residency at Loyola University Affiliated Hospitals. She is certified by the Board Certification: Endocrinology and has a state license in Illinois.

Medical School: University of Illinois College of Medicine (1988)

Residency: Loyola University Affiliated Hospitals

Board Certification: Board Certification: Endocrinology

Licensed In: Illinois

Affiliations & Hospitals

Dr. Mary Deherrera Codo, MD is associated with these hospitals and organizations:

Duly Health and Care

Ratings & Reviews

Dr. Mary Deherrera Codo, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 813 ratings. We collect ratings and reviews of Dr. Mary Deherrera Codo, MD from all over the web to help you find the right in Naperville, IL.

4.9

Overall Rating

(813 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2026-02-04

Patient verified via Press Ganey

Everyone at the clinic treated me with respect and were helpful. Dr. Codo spent what I felt was an appropriate length of time during the exam. She listened to my concerns and explained, in detail, the lab tests she was ordering.

Overall Rating: 5.0 2025-08-12

Patient verified via Press Ganey

During the appointment, Dr Codo makes me feel as though I'm her most important patient. I also value that she remembers some of the significant health problems that I have which helps to facilitate the appointment.

Overall Rating: 5.0 2025-12-13

Patient verified via Press Ganey

Dr Codo has a wonderful bedside manner and is very thorough. She and her staff are amazing. The receptionists set the tone of the space as they're the first interaction, and they are WONDERFUL!!

Overall Rating: 5.0 2025-12-03

Patient verified via Press Ganey

Dr Codo is an excellent Dr/person. She's such a caring Dr. Takes all necesssry time and explains all testing done.I've been seeing her for several years!!She's the best.

Overall Rating: 5.0 2024-12-15

Patient verified via Press Ganey

Dr Codo is an absolute professional who also displays an unexpected aura of true concern which is not always the case for a highly trained specialist like this

Overall Rating: 5.0 2025-11-26

Patient verified via Press Ganey

Dr. Codo and her nurse practitioner Anne Maynard have helped me considerably with all my health issues and have made my quality of life much better .

Overall Rating: 5.0 2025-10-01

Patient verified via Press Ganey

Dr Codo is great. She's professional, polite & takes time to explain tests, test results, medication changes, etc. And answers any questions I have.

Overall Rating: 5.0 2025-11-21

Patient verified via Press Ganey

Dr. Is very kind and honest. She made me feel very comfortable. Explaned me the concern about my issue. Well explained about the treatment.

Overall Rating: 5.0 2025-11-13

Patient verified via Press Ganey

I was treated well and so with the front dest and the nurse and specially with Dr Codo she explained very well and I highly recommend her .

Overall Rating: 5.0 2025-05-29

Patient verified via Press Ganey

Dr. Codo is excellent. She has an awesome demeanor. She explained everything and what I will do next.All treated excellent when I go there!

To see all 813 reviews for Dr. Mary Deherrera Codo, MD, view their full profile.

General Payments

These charts describe general payments received by Dr. Mary Deherrera Codo, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
SANOFI-AVENTIS U.S. LLC	$2,115 TOUJEO $237	SOLIQUA 100/33 $115	TZIELD $74	LIXISENATIDE $64	LANTUS $62	Other $1,563
Abbott Laboratories	$1,685 FreeStyle Libre $619	FREESTYLE LIBRE 3 $598	Freestyle Libre 2 $278	FreeStyle Libre blood glucose Flash Monitoring System $179	Diabetes Care $11
Novo Nordisk Inc	$1,081 RYBELSUS $438	Ozempic $266	Victoza $82	Tresiba $72	Levemir $24	Other $199
Janssen Pharmaceuticals, Inc	$665 INVOKANA $528	meters $77	OneTouch $44	$16
Lilly USA, LLC	$374 JARDIANCE $139	MOUNJARO $60	HUMALOG $41	FORTEO $40	TRULICITY $34	Other $59
Other	$2,139 FARXIGA $312	DEXCOM G6 TRANSMITTER $187	Prolia $140	Synthroid $138	Omnipod $131	Other $1,230

**Types of Payments**
Food and Beverage	$6,218
Consulting Fee	$1,500
Education	$341

Biography

Dr. Mary Codo is an adult endocrinology specialist in Naperville, IL. Before performing her residency at a hospital affiliated with Loyola University, Dr. Codo attended the University of Illinois College of Medicine for medical school. Dr. Codo's clinical interests include diabetes, thyroid problems, and pituitary disorders. The average patient rating for Dr. Codo is 5.0 stars (out of 5). She is affiliated with Duly Health and Care. She has an open panel in Naperville, IL according to Doctor.com.