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Dr. Grace Si-Wah Eng, MD

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Specializes in: Adult Endocrinology

University of Michigan Medical School

Professional interests include: pheochromocytoma, metabolic disorders, metabolic bone diseases, and more.

300 Pasteur Drive
Palo Alto, CA 94304

(650) 723-4000

Dr. Grace Si-Wah Eng, MD is an endocrinologist in Palo Alto, CA specializing in adult endocrinology. She graduated from University of Michigan Medical School. Dr. Grace Si-Wah Eng, MD is affiliated with Brown and Toland Physicians, Alta Bates Summit Medical Center, Stanford Health Care and Alta Bates Summit Medical Center (Oakland).

Office Locations

300 Pasteur Drive
Palo Alto, CA 94304

(650) 723-4000

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Alta Bates Summit Medical Center (Oakland)

5800 Hollis Street
Emeryville, CA 94608

(510) 806-2100

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Stanford Health Care

6121 Hollis Street Suite 400
Emeryville, CA 94608

(510) 266-5400

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Some issues Dr. Grace Si-Wah Eng, 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Grace Si-Wah Eng, MD treated as an endocrinologist in Palo Alto, CA during 2012 were preventive care and vaccines.

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	374
preventive care	13
vaccines	13

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Grace Si-Wah Eng, MD treated as an endocrinologist in Palo Alto, CA during 2013 were preventive care and vaccines.

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	409
preventive care	24
vaccines	24

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	49
Female	119

**Ethnicity**
Non-Hispanic White	94
Black	42
Hispanic	0
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	73
From 75 to 84	46
85 and over	26
Less than 65	23

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2013

Hypertension	72
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	31
Depression	18
Chronic Kidney Disease	42
Asthma	10
Osteoperosis	23
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	0
Diabetes	65
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Grace Si-Wah Eng, MD treated as an endocrinologist in Palo Alto, CA during 2014 were preventive care and vaccines.

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	435
preventive care	28
vaccines	28

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	53
Female	123

**Ethnicity**
Non-Hispanic White	102
Black	41
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	83
From 75 to 84	47
85 and over	19
Less than 65	27

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2014

Hypertension	67
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	26
Depression	20
Chronic Kidney Disease	38
Asthma	11
Osteoperosis	20
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	0
Diabetes	65
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Grace Si-Wah Eng, MD treated as an endocrinologist in Palo Alto, CA during 2015 were preventive care and vaccines.

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	403
preventive care	17
vaccines	17

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	94
Female	246

**Ethnicity**
Non-Hispanic White	184
Black	90
Hispanic	0
Asian	36
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	86
85 and over	38
Less than 65	42

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2015

Hypertension	65
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	26
Depression	19
Chronic Kidney Disease	44
Asthma	7
Osteoperosis	24
Atrial Fibrilation	0
Heart Failure	17
Chronic Obstructive Pulmonary Disease	0
Diabetes	63
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Grace Si-Wah Eng, MD treated as an endocrinologist in Palo Alto, CA during 2016 were preventive care and vaccines.

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	336
preventive care	23
vaccines	23

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	52
Female	128

**Ethnicity**
Non-Hispanic White	102
Black	40
Hispanic	0
Asian	24
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	52
85 and over	19
Less than 65	19

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2016

Hypertension	68
High Cholesterol	59
Stroke	7
Ischemic Heart Disease	28
Depression	13
Chronic Kidney Disease	54
Asthma	10
Osteoperosis	26
Atrial Fibrilation	13
Heart Failure	19
Chronic Obstructive Pulmonary Disease	9
Diabetes	57
Dementia	9
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	311

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	51
Female	135

**Ethnicity**
Non-Hispanic White	108
Black	41
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	97
From 75 to 84	53
85 and over	16
Less than 65	20

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2017

Hypertension	58
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	25
Depression	17
Chronic Kidney Disease	51
Asthma	10
Osteoperosis	31
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	6
Diabetes	51
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	397

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	63
Female	158

**Ethnicity**
Non-Hispanic White	132
Black	42
Hispanic	0
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	67
85 and over	27
Less than 65	20

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2018

Hypertension	65
High Cholesterol	60
Stroke	7
Ischemic Heart Disease	25
Depression	21
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	38
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	9
Diabetes	54
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	470

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	71
Female	187

**Ethnicity**
Non-Hispanic White	155
Black	45
Hispanic	0
Asian	28
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	78
85 and over	24
Less than 65	24

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2019

Hypertension	64
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	27
Depression	24
Chronic Kidney Disease	45
Asthma	12
Osteoperosis	41
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	51
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	526

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	73
Female	205

**Ethnicity**
Non-Hispanic White	167
Black	49
Hispanic	11
Asian	28
Other	23
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	89
85 and over	26
Less than 65	22

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2020

Hypertension	59
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	48
Asthma	10
Osteoperosis	45
Atrial Fibrilation	11
Heart Failure	21
Chronic Obstructive Pulmonary Disease	8
Diabetes	52
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	686

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	88
Female	232

**Ethnicity**
Non-Hispanic White	197
Black	51
Hispanic	11
Asian	33
Other	28
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	111
85 and over	28
Less than 65	23

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2021

Hypertension	64
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	27
Depression	23
Chronic Kidney Disease	45
Asthma	11
Osteoperosis	47
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	7
Diabetes	46
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

doctor visit	691

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	94
Female	268

**Ethnicity**
Non-Hispanic White	242
Black	45
Hispanic	0
Asian	41
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	135
85 and over	33
Less than 65	16

Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD in 2022

Hypertension	63
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	22
Depression	20
Chronic Kidney Disease	31
Asthma	10
Osteoperosis	54
Atrial Fibrilation	18
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	41
Dementia	4
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Grace Si-Wah Eng, MD for Medicare patients.

The highest averages for the top procedures that Dr. Grace Si-Wah Eng, MD treated as an endocrinologist in Palo Alto, CA were preventive care and vaccines.

doctor visit	458
preventive care	21
vaccines	21

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Grace Si-Wah Eng, MD.

**Gender**
Male	62
Female	163

**Ethnicity**
Black / African American	44
Asian / Pacific Islander	24
Non-Hispanic White	134
Native American / Alaskan Native	0
Hispanic	2
Other	4

**Age**
75 to 84	69
85 and over	23
Less than 65	21
65 to 74	112

Average of Total of Conditions of Medicare patients treated by Dr. Grace Si-Wah Eng, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Grace Si-Wah Eng, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	58
High Cholesterol	56
Stroke	2
Ischemic Heart Disease	23
Depression	18
Chronic Kidney Disease	40
Asthma	9
Osteoporosis	31
Heart Failure	16
Chronic Obstructive Pulmonary Disease	5
Diabetes	49
Atrial Fibrillation	9
Dementia	7
Cancer	10

Education & Training

Dr. Grace Si-Wah Eng, MD graduated from University of Michigan Medical School. She completed residency at Yale University Affiliated Hospitals. She is certified by the American Board of Internal Medicine, Internal Medicine American Board of Internal Medicine, Endocrinology, Diabetes and Metabolism and has a state license in California.

Medical School: University of Michigan Medical School

Residency: Yale University Affiliated Hospitals

Board Certification: American Board of Internal Medicine, Internal Medicine American Board of Internal Medicine, Endocrinology, Diabetes and Metabolism

Licensed In: California

Affiliations & Hospitals

Dr. Grace Si-Wah Eng, MD is associated with these hospitals and organizations:

Brown and Toland Physicians

Alta Bates Summit Medical Center

Stanford Health Care

Alta Bates Summit Medical Center (Oakland)

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General Payments

These charts describe general payments received by Dr. Grace Si-Wah Eng, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Dexcom, Inc.	$150 Dexcom CGM $150
Roche Diagnostics Corporation	$121 DC ACCU CHEK Insulin Delivery $102	DCACCUCHEKDiabetesManagementSolutions $20
Amgen Inc.	$14 Sensipar $14

**Types of Payments**
Food and Beverage	$266
Education	$20

Biography

Dr. Grace Eng practices adult endocrinology in Palo Alto, CA and Emeryville, CA. Dr. Eng studied medicine at the University of Michigan Medical School. She completed her residency training at a hospital affiliated with Yale University. Clinical interests for Dr. Eng include vitamin D deficiency, diabetes insipidus, and pheochromocytoma. Dr. Eng's hospital/clinic affiliations include Alta Bates Summit Medical Center, Brown and Toland Physicians, and Stanford Health Care. According to Brown and Toland Physicians, new patients are welcome to contact her office in Emeryville, CA.