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Dr. Cynthia J. Herrick, MD, FACP

Accepting New Patients

(Dr. Cynthia Joan Herrick, MD)

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Specializes in: Adult Endocrinology

Washington University in St. Louis School of Medicine

Professional interests include: metabolism, tumor, thyroid problems, and more.

1 Village Square
Hazelwood, MO 63042

(314) 362-3500

Dr. Cynthia J. Herrick, MD, FACP is an endocrinologist in Hazelwood, MO specializing in adult endocrinology. She graduated from Washington University in St. Louis School of Medicine. Dr. Cynthia J. Herrick, MD, FACP is affiliated with Washington University Physicians, BJC HealthCare, Washington University in St. Louis (WUSTL) and Barnes-Jewish Hospital.

Office Locations

Address:

1 Village Square
Hazelwood, MO 63042

Unable to locate address.

Address:

4921 Parkview Place Div Im Endocrinology, Suite 5c
Saint Louis, MO 63110

Address:

4921 Parkview Place Suite 5c
Saint Louis, MO 63110

Some issues Dr. Cynthia J. Herrick, MD, FACP can help you with:

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

“Dr. Cynthia Herrick, left, and Dr. Thomas J. Baranski, right, are both co-directors at Washington University Transgender Center at St. Louis Children's Hospital in Missouri.”—"Missouri transgender clinic will NO LONGER use puberty blocker on kids", Daily Mail Online, September 2023

diabetes management	32
doctor visit	13
hospital care	67
inpatient care	67
lab tests	31
preventive care	13

**Gender**
Male	24
Female	30

**Ethnicity**
Non-Hispanic White	39
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	37

Hypertension	75
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	46
Depression	41
Chronic Kidney Disease	63
Asthma	20
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	44
Chronic Obstructive Pulmonary Disease	24
Diabetes	75
Dementia	0
Cancer	0

blood draw	39
diabetes management	103
doctor visit	107
hospital care	57
inpatient care	57
lab tests	102
preventive care	46

**Gender**
Male	96
Female	180

**Ethnicity**
Non-Hispanic White	188
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	0
85 and over	0
Less than 65	134

Hypertension	75
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	46
Depression	41
Chronic Kidney Disease	57
Asthma	12
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	36
Chronic Obstructive Pulmonary Disease	20
Diabetes	62
Dementia	0
Cancer	12

blood draw	51
diabetes management	101
doctor visit	119
hospital care	63
inpatient care	63
lab tests	100
neck imaging	11
preventive care	46
ultrasound (sonogram)	11

**Gender**
Male	48
Female	104

**Ethnicity**
Non-Hispanic White	107
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	0
85 and over	0
Less than 65	56

Hypertension	75
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	43
Depression	38
Chronic Kidney Disease	56
Asthma	23
Osteoperosis	17
Atrial Fibrilation	14
Heart Failure	33
Chronic Obstructive Pulmonary Disease	20
Diabetes	57
Dementia	13
Cancer	14

blood draw	42
diabetes management	131
doctor visit	148
hospital care	85
inpatient care	85
lab tests	130
minimally invasive procedures	19
preventive care	64

**Gender**
Male	77
Female	132

**Ethnicity**
Non-Hispanic White	144
Black	54
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	75
From 75 to 84	0
85 and over	0
Less than 65	89

Hypertension	75
High Cholesterol	58
Stroke	9
Ischemic Heart Disease	45
Depression	38
Chronic Kidney Disease	64
Asthma	9
Osteoperosis	16
Atrial Fibrilation	10
Heart Failure	35
Chronic Obstructive Pulmonary Disease	19
Diabetes	58
Dementia	15
Cancer	9

blood draw	28
diabetes management	131
doctor visit	125
hospital care	52
inpatient care	52
lab tests	130
minimally invasive procedures	17
preventive care	63

**Gender**
Male	59
Female	92

**Ethnicity**
Non-Hispanic White	118
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	0
85 and over	0
Less than 65	61

Hypertension	70
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	39
Depression	38
Chronic Kidney Disease	56
Asthma	11
Osteoperosis	20
Atrial Fibrilation	9
Heart Failure	29
Chronic Obstructive Pulmonary Disease	14
Diabetes	54
Dementia	10
Cancer	8

blood draw	22
diabetes management	130
doctor visit	113
hospital care	19
inpatient care	19
lab tests	129
preventive care	64

**Gender**
Male	46
Female	97

**Ethnicity**
Non-Hispanic White	111
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	0
85 and over	0
Less than 65	52

Hypertension	75
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	38
Depression	36
Chronic Kidney Disease	56
Asthma	10
Osteoperosis	19
Atrial Fibrilation	10
Heart Failure	27
Chronic Obstructive Pulmonary Disease	20
Diabetes	58
Dementia	10
Cancer	9

diabetes management	35
doctor visit	59
hospital care	18
inpatient care	18
lab tests	34
preventive care	18

**Gender**
Male	51
Female	75

**Ethnicity**
Non-Hispanic White	97
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	0
85 and over	0
Less than 65	51

Hypertension	73
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	39
Depression	43
Chronic Kidney Disease	54
Asthma	0
Osteoperosis	15
Atrial Fibrilation	10
Heart Failure	28
Chronic Obstructive Pulmonary Disease	10
Diabetes	63
Dementia	10
Cancer	12

diabetes management	68
doctor visit	137
hospital care	45
inpatient care	45
lab tests	109
minimally invasive procedures	13
preventive care	110

Average Medicare Procedure Volume From 2014 - 2021

Volume of procedures performed by Dr. Cynthia J. Herrick, MD, FACP for Medicare patients.

The highest averages for the top procedures that Dr. Cynthia J. Herrick, MD, FACP treated as an endocrinologist in Hazelwood, MO were lab tests, diabetes management, preventive care and hospital care.

blood draw	36
diabetes management	91
doctor visit	103
hospital care	50
inpatient care	50
lab tests	96
minimally invasive procedures	16
neck imaging	11
preventive care	53
ultrasound (sonogram)	11

Average Medicare Patient Data From 2014 - 2021

Information about Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP.

**Gender**
Male	40
Female	71

**Ethnicity**
Black / African American	5
Asian / Pacific Islander	0
Non-Hispanic White	80
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	0
85 and over	0
Less than 65	48
65 to 74	40

Average of Total of Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP From 2014 - 2021

The highest averages of the most common conditions of Medicare patients that Dr. Cynthia J. Herrick, MD, FACP treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	51
High Cholesterol	43
Stroke	1
Ischemic Heart Disease	29
Depression	27
Chronic Kidney Disease	40
Asthma	8
Osteoporosis	9
Heart Failure	23
Chronic Obstructive Pulmonary Disease	12
Diabetes	42
Atrial Fibrillation	6
Cancer	6
Dementia	5

Education & Training

Dr. Cynthia J. Herrick, MD, FACP graduated from Washington University in St. Louis School of Medicine. She completed residency at Massachusetts General Hospital. She is certified by the Board Certification: Internal Medicine/Endocrinology and has a state license in Missouri.

Medical School: Washington University in St. Louis School of Medicine

Residency: Massachusetts General Hospital

Board Certification: Board Certification: Internal Medicine/Endocrinology

Licensed In: Missouri

Affiliations & Hospitals

Dr. Cynthia J. Herrick, MD, FACP is associated with these hospitals and organizations:

Washington University Physicians

BJC HealthCare

Washington University in St. Louis (WUSTL)

Barnes-Jewish Hospital

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Cynthia J. Herrick, MD, FACP appears to accept the following insurance providers: Aetna US Access, Aetna National Advantage Program, Aetna Elect Choice, Aetna Open Choice PPO, United Healthcare, Aetna Open Access HMO, Aetna, MHBP, Aetna Choice POS II, Humana, Aetna Select, Aetna Elect Choice EPO, Coventry, Cigna, Blue California, Aetna Open Access PPO, Aetna Medicare HMO and Aetna Medicare PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Cynthia J. Herrick, MD, FACP accepts the following insurance providers:

Aetna US Access

Aetna National Advantage Program

Aetna Elect Choice

Aetna Open Choice PPO

United Healthcare

Aetna Open Access HMO

Aetna

MHBP

Aetna Choice POS II

Humana

Aetna Select

Aetna Elect Choice EPO

Coventry

Cigna

Blue California

Aetna Open Access PPO

Aetna Medicare HMO

Aetna Medicare PPO

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Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Cynthia J. Herrick, MD, FACP. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Merck Sharp & Dohme Corporation	$170 $170
Medtronic MiniMed, Inc.	$165 Minimed 670G System $125	Insulin pump $40
Novo Nordisk Inc	$126 Ozempic $126
Shire North American Group Inc	$125 NATPARA $125
Boehringer Ingelheim Pharmaceuticals, Inc.	$125 $125
Other	$604 t-slim insulin pump $112	HUMULIN $107	OMNIPODINSULINMANAGEMENTSYSTEM $93	Freestyle Libre 2 $79	Synthroid $34	Other $180

**Types of Payments**
Food and Beverage	$1,189
Consulting Fee	$125
Education	$1

Biography

Dr. Cynthia Herrick practices adult endocrinology. Her areas of expertise include the following: diabetes, thyroid problems, and metabolism. Dr. Herrick is affiliated with Washington University Physicians and Barnes-Jewish Hospital. She studied medicine at Washington University in St. Louis School of Medicine.

Select Year:

Dr. Cynthia J. Herrick, MD, FACP

Office Locations

Some issues Dr. Cynthia J. Herrick, MD, FACP can help you with:

In The News

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Average Medicare Procedure Volume From 2014 - 2021

Average Medicare Patient Data From 2014 - 2021

Average of Total of Conditions of Medicare patients treated by Dr. Cynthia J. Herrick, MD, FACP From 2014 - 2021

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

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