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Dr. Maruja Del Valle Diaz Arjonilla, MD

Accepting New Patients

(Maruja D. Diaz Arjonilla, MD)

(211 Ratings)

Specializes in: Endocrinology Diabetes & Metabolism

Universidad Central de Venezuela (1990)

Professional interests include: osteoporosis, endocrine diseases (hormone disorders), thyroid problems, and more.

2212 E 4th Street
Santa Ana, CA 92705

(714) 571-7793

Dr. Maruja Del Valle Diaz Arjonilla, MD is an endocrinologist in Santa Ana, CA specializing in endocrinology diabetes & metabolism. She graduated from Universidad Central de Venezuela in 1990 and has 34 years of experience. Dr. Maruja Del Valle Diaz Arjonilla, MD is affiliated with St. Joseph Heritage Medical Group, Providence Medical Foundation, St. Joseph Heritage Orange - Chapman Suite 203 and PROVIDENCE MEDICAL FOUNDATION.

Office Locations

Address:

2212 E 4th Street
Santa Ana, CA 92705

Address:

2501 E. Chapman Avenue Suite 203
Orange, CA 92869

Some issues Dr. Maruja Del Valle Diaz Arjonilla, MD can help you with:

Autoimmune Diseases

An autoimmune disorder happens when the immune system mistakenly attacks the tissues of its own body, causing symptoms of illness. There are more than 80 different types of autoimmune disorders. While some are very rare, others are fairly common. Combined, autoimmune disorders are one of the leading causes of death and disability in the United States, affecting approximately 24 million people.

A properly working immune system identifies foreign substances in the body that might cause illness, such as bacteria and viruses. The immune system then creates antibodies which attack the foreign substances, neutralizing them and keeping the body safe. In people with autoimmune disorders, something goes wrong with this process. For reasons that are not fully understand, the immune system creates antibodies to attack the patient's own tissues.

Symptoms of an autoimmune disorder depend on which tissue is being attacked by the immune system, but common symptoms of autoimmune disease include fever, fatigue, and a general feeling of just not being well. Autoimmune disorders are more common in women than in men, and they may run in families. Autoimmune disorders can affect various parts of the body such as blood vessels, connective tissue, endocrine glands, joints, muscles, red blood cells, skin, and many others.

It is common to have more than one autoimmune disorder at a time. Most are chronic, or life-long illnesses, although they may come and go in flares. Treatment for autoimmune disorders depends on which part of the body is being attacked. For example:

A type 1 diabetic whose pancreas has been damaged will need insulin.
A person with Hashimoto's whose thyroid has been damaged will need replacement thyroid hormones.
Someone with Sjogren's syndrome will need eye drops and mouth rinses to replace tears and saliva.

Many autoimmune disorders of all kinds are treated with immune-suppressing medications, such as corticosteroids (e.g. prednisone) to reduce the effect of the immune system.

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.

doctor visit	403

**Gender**
Male	63
Female	164

**Ethnicity**
Non-Hispanic White	203
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	60
85 and over	0
Less than 65	0

Hypertension	58
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	23
Depression	26
Chronic Kidney Disease	28
Asthma	8
Osteoperosis	18
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	35
Dementia	0
Cancer	10

doctor visit	511

**Gender**
Male	71
Female	202

**Ethnicity**
Non-Hispanic White	242
Black	0
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	76
85 and over	18
Less than 65	52

Hypertension	56
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	25
Depression	21
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	23
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	31
Dementia	5
Cancer	8

blood draw	13
doctor visit	133

**Gender**
Male	54
Female	150

**Ethnicity**
Non-Hispanic White	154
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	64
85 and over	24
Less than 65	36

Hypertension	69
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	25
Atrial Fibrilation	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	48
Dementia	11
Cancer	15

blood draw	73
doctor visit	204
neck imaging	14
ultrasound (sonogram)	14

**Gender**
Male	29
Female	57

**Ethnicity**
Non-Hispanic White	45
Black	0
Hispanic	29
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	25
85 and over	0
Less than 65	0

Hypertension	75
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	71
Asthma	22
Osteoperosis	24
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	16
Diabetes	66
Dementia	0
Cancer	0

blood draw	61
diabetes management	16
doctor visit	229
lab tests	16
neck imaging	17
ultrasound (sonogram)	17

**Gender**
Male	33
Female	63

**Ethnicity**
Non-Hispanic White	44
Black	0
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	29
From 75 to 84	34
85 and over	13
Less than 65	20

Hypertension	75
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	34
Depression	27
Chronic Kidney Disease	71
Asthma	13
Osteoperosis	24
Atrial Fibrilation	0
Heart Failure	26
Chronic Obstructive Pulmonary Disease	17
Diabetes	66
Dementia	0
Cancer	0

blood draw	49
diabetes management	14
doctor visit	274
lab tests	14
neck imaging	24
ultrasound (sonogram)	24

**Gender**
Male	42
Female	76

**Ethnicity**
Non-Hispanic White	49
Black	0
Hispanic	54
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	43
85 and over	0
Less than 65	0

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	66
Asthma	9
Osteoperosis	21
Atrial Fibrilation	9
Heart Failure	23
Chronic Obstructive Pulmonary Disease	11
Diabetes	64
Dementia	9
Cancer	11

blood draw	113
diabetes management	17
doctor visit	304
hospital care	33
inpatient care	33
lab tests	17
neck imaging	24
ultrasound (sonogram)	24

**Gender**
Male	55
Female	103

**Ethnicity**
Non-Hispanic White	63
Black	0
Hispanic	68
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	45
85 and over	14
Less than 65	33

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	38
Depression	29
Chronic Kidney Disease	66
Asthma	7
Osteoperosis	26
Atrial Fibrilation	7
Heart Failure	21
Chronic Obstructive Pulmonary Disease	0
Diabetes	68
Dementia	16
Cancer	15

blood draw	74
doctor visit	208
hospital care	32
inpatient care	32
neck imaging	24
ultrasound (sonogram)	24

**Gender**
Male	43
Female	82

**Ethnicity**
Non-Hispanic White	61
Black	0
Hispanic	53
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	50
From 75 to 84	38
85 and over	13
Less than 65	24

Hypertension	75
High Cholesterol	72
Stroke	0
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	71
Asthma	12
Osteoperosis	24
Atrial Fibrilation	14
Heart Failure	22
Chronic Obstructive Pulmonary Disease	16
Diabetes	64
Dementia	11
Cancer	11

diabetes management	68
doctor visit	475
lab tests	68
neck imaging	36
ultrasound (sonogram)	36

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. Maruja Del Valle Diaz Arjonilla, MD for Medicare patients.

The highest averages for the top procedures that Dr. Maruja Del Valle Diaz Arjonilla, MD treated as an endocrinologist in Santa Ana, CA were blood draw, hospital care, inpatient care and lab tests.

blood draw	63
diabetes management	28
doctor visit	304
hospital care	32
inpatient care	32
lab tests	28
neck imaging	23
ultrasound (sonogram)	23

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. Maruja Del Valle Diaz Arjonilla, MD.

**Gender**
Male	39
Female	89

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	1
Non-Hispanic White	86
Native American / Alaskan Native	0
Hispanic	25
Other	0

**Age**
75 to 84	38
85 and over	8
Less than 65	16
65 to 74	55

Average of Total of Conditions of Medicare patients treated by Dr. Maruja Del Valle Diaz Arjonilla, MD From 2013 - 2021

The highest averages of the most common conditions of Medicare patients that Dr. Maruja Del Valle Diaz Arjonilla, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	55
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	25
Depression	20
Chronic Kidney Disease	43
Asthma	7
Osteoporosis	18
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	44
Atrial Fibrillation	5
Cancer	7
Dementia	5

Education & Training

Dr. Maruja Del Valle Diaz Arjonilla, MD graduated from Universidad Central de Venezuela in 1990. She completed residency at UCSF - Fresno. She is certified by the Board Certification: Endocrinology and has a state license in California.

Medical School: Universidad Central de Venezuela (1990)

Residency: UCSF - Fresno (2007)

Board Certification: Board Certification: Endocrinology

Licensed In: California

Affiliations & Hospitals

Dr. Maruja Del Valle Diaz Arjonilla, MD is associated with these hospitals and organizations:

St. Joseph Heritage Medical Group

Providence Medical Foundation

St. Joseph Heritage Orange - Chapman Suite 203

PROVIDENCE MEDICAL FOUNDATION

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. Maruja Del Valle Diaz Arjonilla, MD appears to accept the following insurance providers: Aetna PPO, Anthem Blue Cross HMO, Aetna Medicare Advantage PPO, Health Net HMO, SCAN Medicare Advantage, Cigna HMO, Vivity by Anthem Blue Cross, United Healthcare Medicare Advantage, Anthem Blue Cross PPO, Health Net PPO, Cigna PPO, Health Net Medicare Advantage, Blue Shield of CA Medicare Advantage, HealthSmart (Interplan) PPO, Blue Shield of CA HMO – Trio, Coventry/First Health PPO, United Healthcare HMO, Blue Shield of CA HMO, Blue Shield of CA PPO, Providence Medicare Advantage, Health Net - TriCare, Choice /Humana PPO, US Family Health Plan - TriCare, Anthem Blue Cross Medicare Advantage, Anthem Blue Cross Medicare PPO, Multiplan PPO, Aetna HMO, Aetna Medicare Advantage HMO, United HealthCare PPO, Aetna Medicare PPO, CIGNA PPO, CIGNA HMO, Medicare Advantage, MultiPlan PPO, United Healthcare PPO, Coventry PPO, United Healthcare HMO, Blue Shield of California, Aetna, First Health PPO, US Family Health Plan, United Healthcare, Anthem Blue Cross HMO, Anthem Blue Cross PPO, Humana, TRICARE, Anthem, Health Net PPO, Health Net HMO, HealthSmart, Providence, Aetna PPO, Aetna HMO and Insurance Plan.

Insurance Accepted by Provider includes:

According to our sources, Dr. Maruja Del Valle Diaz Arjonilla, MD accepts the following insurance providers:

Aetna PPO

Anthem Blue Cross HMO

Aetna Medicare Advantage PPO

Health Net HMO

SCAN Medicare Advantage

Cigna HMO

Vivity by Anthem Blue Cross

United Healthcare Medicare Advantage

Anthem Blue Cross PPO

Health Net PPO

Cigna PPO

Health Net Medicare Advantage

Blue Shield of CA Medicare Advantage

HealthSmart (Interplan) PPO

Blue Shield of CA HMO – Trio

Coventry/First Health PPO

United Healthcare HMO

Blue Shield of CA HMO

Blue Shield of CA PPO

Providence Medicare Advantage

Health Net - TriCare

Choice /Humana PPO

US Family Health Plan - TriCare

Anthem Blue Cross Medicare Advantage

Anthem Blue Cross Medicare PPO

Multiplan PPO

Aetna HMO

Aetna Medicare Advantage HMO

United HealthCare PPO

Aetna Medicare PPO

CIGNA PPO

CIGNA HMO

Medicare Advantage

MultiPlan PPO

United Healthcare PPO

Coventry PPO

United Healthcare HMO

Blue Shield of California

Aetna

First Health PPO

US Family Health Plan

United Healthcare

Anthem Blue Cross HMO

Anthem Blue Cross PPO

Humana

TRICARE

Anthem

Health Net PPO

Health Net HMO

HealthSmart

Providence

Aetna PPO

Aetna HMO

Insurance Plan

Show More

Ratings & Reviews

Dr. Maruja Del Valle Diaz Arjonilla, MD has an exceptional overall rating with an average of 4.8 out of 5 stars based on 211 ratings. We collect ratings and reviews of Dr. Maruja Del Valle Diaz Arjonilla, MD from all over the web to help you find the right in Santa Ana, CA.

4.8

Overall Rating

(211 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2020-08-25

Dr. Diaz is one of the most attentive and conscientious doctors I've ever worked with.  She is an educator who helps you to understand your condition and who pays careful attention to what you tell her.  Her prescriptions are very specific and adjusted when your symptoms indicate a need for change.  When I needed surgery, she referred me to an excellent surgeon.  I feel like I had the best possible care available for my conditions.  I should also give a shout out to the front office staff, who were all very polite and helpful.  The one thing that I would like to see changed is the system of contact.  If I missed a phone call from this office, I could only call back to a central appointment line and leave a message.  I would like to be able to call in and speak directly with the staff,.

General Payments

These charts describe general payments received by Dr. Maruja Del Valle Diaz Arjonilla, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Medtronic MiniMed, Inc.	$316 Minimed 670G System $195	Minimed 530G $121
GlaxoSmithKline, LLC.	$247 TANZEUM $225	BEXSERO $22
Dexcom, Inc.	$219 DEXCOM G6 TRANSMITTER $219
Novo Nordisk Inc	$216 Tresiba $139	Ozempic $47	Victoza $10	$20
AbbVie, Inc.	$152 Lupron $110	Androgel $42
Other	$1,050 FreeStyle Lite system $100	NATPARA $100	THYROGEN $98	GENOTROPIN $98	FARXIGA $98	Other $557

**Types of Payments**
Food and Beverage	$2,083
Education	$100
Consulting Fee	$18

Biography

Dr. Maruja Diaz Arjonilla is an endocrinology specialist. She is conversant in Spanish. Her areas of expertise include diabetes, thyroid problems, and osteoporosis. Dr. Diaz Arjonilla is affiliated with St. Joseph Heritage Medical Group. She attended medical school at Central University of Venezuela Faculty of Medicine. The average patient rating for Dr. Diaz Arjonilla is 5.0 stars (out of 5). She appears to be an in-network provider for Anthem, Blue California, HealthSmart, and more. According to Providence Medical Foundation, she is currently accepting new patients at her office in Orange, CA.