i
Loading Page
loading, please wait

Select Year:

Home > CA Providers
placeholder image of provider

Dr. Cheng-Yang Christian Tuan, MD

Accepting New Patients
Specializes in: Adult Endocrinology
New York University (NYU) School of Medicine
Professional interests include: hirsutism (excessive hair growth), thyroid nodules, parathyroid disease, and more.
1580 Valencia Street Suite 208
San Francisco, CA 94110

Dr. Cheng-Yang Christian Tuan, MD is an endocrinologist in San Francisco, CA specializing in adult endocrinology. He graduated from New York University (NYU) School of Medicine. Dr. Cheng-Yang Christian Tuan, MD is affiliated with Astrana Health, Sutter Health, All American Medical Group, Hill Physicians, CHENG-YANG CHRISTIAN TUAN MD and All American Medical Group.

View Doctor's Full Profile (415) 695-7661

Office Locations

Hill Physicians

1580 Valencia Street Suite 208
San Francisco, CA 94110
(415) 695-7661
(415) 695-7665
open_in_new

Some issues Dr. Cheng-Yang Christian Tuan, 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2012 were lab tests, diabetes management, preventive care and vaccines.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 636
doctor visit 1142
lab tests 636
preventive care 15
vaccines 15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2013 were lab tests, diabetes management, preventive care and vaccines.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

aspiration 14
diabetes management 814
diagnostic procedures 14
doctor visit 1200
image guided procedures 14
lab tests 814
minimally invasive procedures 14
minor procedures 14
preventive care 45
vaccines 45

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 140
Female 311
Ethnicity
Non-Hispanic White 120
Black 55
Hispanic 153
Asian 108
Other 0
Native American 0
Age
From 65 to 74 186
From 75 to 84 145
85 and over 51
Less than 65 69

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2013

Hypertension 75
High Cholesterol 58
Stroke 3
Ischemic Heart Disease 34
Depression 16
Chronic Kidney Disease 45
Asthma 10
Osteoperosis 12
Atrial Fibrilation 13
Heart Failure 23
Chronic Obstructive Pulmonary Disease 8
Diabetes 72
Dementia 8
Cancer 8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2014 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 717
doctor visit 1363
lab tests 717

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 176
Female 354
Ethnicity
Non-Hispanic White 138
Black 59
Hispanic 173
Asian 141
Other 0
Native American 0
Age
From 65 to 74 222
From 75 to 84 167
85 and over 50
Less than 65 91

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2014

Hypertension 71
High Cholesterol 60
Stroke 4
Ischemic Heart Disease 29
Depression 19
Chronic Kidney Disease 45
Asthma 10
Osteoperosis 11
Atrial Fibrilation 10
Heart Failure 20
Chronic Obstructive Pulmonary Disease 9
Diabetes 70
Dementia 9
Cancer 7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2015 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 715
doctor visit 1442
lab tests 715

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 374
Female 728
Ethnicity
Non-Hispanic White 310
Black 94
Hispanic 350
Asian 312
Other 0
Native American 0
Age
From 65 to 74 508
From 75 to 84 300
85 and over 126
Less than 65 168

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2015

Hypertension 72
High Cholesterol 58
Stroke 4
Ischemic Heart Disease 29
Depression 21
Chronic Kidney Disease 54
Asthma 14
Osteoperosis 11
Atrial Fibrilation 10
Heart Failure 21
Chronic Obstructive Pulmonary Disease 9
Diabetes 67
Dementia 9
Cancer 7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2016 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 639
doctor visit 1181
lab tests 639

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 181
Female 328
Ethnicity
Non-Hispanic White 143
Black 47
Hispanic 162
Asian 139
Other 0
Native American 0
Age
From 65 to 74 211
From 75 to 84 156
85 and over 60
Less than 65 82

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2016

Hypertension 75
High Cholesterol 58
Stroke 6
Ischemic Heart Disease 28
Depression 21
Chronic Kidney Disease 70
Asthma 16
Osteoperosis 9
Atrial Fibrilation 10
Heart Failure 19
Chronic Obstructive Pulmonary Disease 10
Diabetes 72
Dementia 10
Cancer 9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2017 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 454
doctor visit 958
lab tests 454

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 172
Female 284
Ethnicity
Non-Hispanic White 117
Black 36
Hispanic 139
Asian 150
Other 0
Native American 0
Age
From 65 to 74 196
From 75 to 84 153
85 and over 48
Less than 65 59

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2017

Hypertension 75
High Cholesterol 71
Stroke 5
Ischemic Heart Disease 30
Depression 19
Chronic Kidney Disease 75
Asthma 12
Osteoperosis 11
Atrial Fibrilation 9
Heart Failure 21
Chronic Obstructive Pulmonary Disease 8
Diabetes 75
Dementia 11
Cancer 9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2018 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 734
doctor visit 1641
lab tests 734

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 220
Female 370
Ethnicity
Non-Hispanic White 158
Black 40
Hispanic 168
Asian 194
Other 0
Native American 0
Age
From 65 to 74 272
From 75 to 84 185
85 and over 68
Less than 65 65

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2018

Hypertension 75
High Cholesterol 75
Stroke 4
Ischemic Heart Disease 31
Depression 17
Chronic Kidney Disease 70
Asthma 10
Osteoperosis 13
Atrial Fibrilation 10
Heart Failure 20
Chronic Obstructive Pulmonary Disease 8
Diabetes 74
Dementia 9
Cancer 9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2019 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 610
doctor visit 1692
lab tests 610

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 231
Female 401
Ethnicity
Non-Hispanic White 178
Black 39
Hispanic 176
Asian 205
Other 0
Native American 0
Age
From 65 to 74 285
From 75 to 84 208
85 and over 76
Less than 65 63

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2019

Hypertension 75
High Cholesterol 75
Stroke 3
Ischemic Heart Disease 30
Depression 16
Chronic Kidney Disease 66
Asthma 9
Osteoperosis 12
Atrial Fibrilation 8
Heart Failure 19
Chronic Obstructive Pulmonary Disease 9
Diabetes 71
Dementia 10
Cancer 8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2020 were lab tests and diabetes management.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

diabetes management 113
doctor visit 1314
lab tests 113

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 220
Female 377
Ethnicity
Non-Hispanic White 171
Black 38
Hispanic 158
Asian 193
Other 0
Native American 0
Age
From 65 to 74 278
From 75 to 84 198
85 and over 63
Less than 65 58

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2020

Hypertension 75
High Cholesterol 75
Stroke 4
Ischemic Heart Disease 30
Depression 15
Chronic Kidney Disease 70
Asthma 7
Osteoperosis 11
Atrial Fibrilation 8
Heart Failure 19
Chronic Obstructive Pulmonary Disease 7
Diabetes 74
Dementia 11
Cancer 7

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

doctor visit 1481

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 240
Female 404
Ethnicity
Non-Hispanic White 202
Black 0
Hispanic 149
Asian 215
Other 42
Native American 0
Age
From 65 to 74 304
From 75 to 84 223
85 and over 70
Less than 65 47

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2021

Hypertension 75
High Cholesterol 75
Stroke 5
Ischemic Heart Disease 30
Depression 16
Chronic Kidney Disease 67
Asthma 8
Osteoperosis 14
Atrial Fibrilation 9
Heart Failure 16
Chronic Obstructive Pulmonary Disease 7
Diabetes 71
Dementia 10
Cancer 11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

doctor visit 1417

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 240
Female 426
Ethnicity
Non-Hispanic White 216
Black 0
Hispanic 146
Asian 226
Other 45
Native American 0
Age
From 65 to 74 320
From 75 to 84 237
85 and over 69
Less than 65 40

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 9
Ischemic Heart Disease 23
Depression 15
Chronic Kidney Disease 39
Asthma 9
Osteoperosis 22
Atrial Fibrilation 13
Heart Failure 12
Chronic Obstructive Pulmonary Disease 9
Diabetes 69
Dementia 6
Cancer 12

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

doctor visit 1245

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 225
Female 392
Ethnicity
Non-Hispanic White 202
Black 0
Hispanic 132
Asian 212
Other 46
Native American 0
Age
From 65 to 74 284
From 75 to 84 234
85 and over 71
Less than 65 28

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2023

Hypertension 75
High Cholesterol 75
Stroke 8
Ischemic Heart Disease 23
Depression 14
Chronic Kidney Disease 41
Asthma 10
Osteoperosis 22
Atrial Fibrilation 13
Heart Failure 13
Chronic Obstructive Pulmonary Disease 8
Diabetes 67
Dementia 6
Cancer 13

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA during 2024 were chronic care.

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

chronic care 739
doctor visit 965

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Male 166
Female 284
Ethnicity
Non-Hispanic White 147
Black 0
Hispanic 103
Asian 159
Other 25
Native American 0
Age
From 65 to 74 193
From 75 to 84 180
85 and over 57
Less than 65 20

Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD in 2024

Hypertension 75
High Cholesterol 75
Stroke 12
Ischemic Heart Disease 25
Depression 12
Chronic Kidney Disease 48
Asthma 9
Osteoperosis 18
Atrial Fibrilation 12
Heart Failure 15
Chronic Obstructive Pulmonary Disease 10
Diabetes 73
Dementia 7
Cancer 13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Cheng-Yang Christian Tuan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Cheng-Yang Christian Tuan, MD treated as an endocrinologist in San Francisco, CA were chronic care, lab tests, diabetes management and preventive care.

aspiration 14
chronic care 739
diabetes management 603
diagnostic procedures 14
doctor visit 1310
image guided procedures 14
lab tests 603
minimally invasive procedures 14
minor procedures 14
preventive care 30
vaccines 30

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD.

Gender
Female 358
Male 198
Ethnicity
Black / African American 31
Asian / Pacific Islander 173
Non-Hispanic White 161
Hispanic 154
Native American / Alaskan Native 0
Other 12
Age
85 and over 62
75 to 84 183
Less than 65 60
65 to 74 250

Average of Total of Conditions of Medicare patients treated by Dr. Cheng-Yang Christian Tuan, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Cheng-Yang Christian Tuan, MD treated were hypertension, diabetes, high cholesterol and chronic kidney disease.

Hypertension 68
High Cholesterol 63
Stroke 5
Ischemic Heart Disease 26
Depression 15
Chronic Kidney Disease 53
Asthma 9
Osteoporosis 12
Heart Failure 16
Chronic Obstructive Pulmonary Disease 7
Diabetes 65
Atrial Fibrillation 9
Cancer 8
Dementia 8

Education & Training

Dr. Cheng-Yang Christian Tuan, MD graduated from New York University (NYU) School of Medicine. He completed residency at University of California, San Diego (UCSD) Affiliated Hospitals. He is certified by the Certification: AMERICAN BOARD OF INTERNAL MEDICINE and has a state license in California.

Medical School: New York University (NYU) School of Medicine

Residency: University of California, San Diego (UCSD) Affiliated Hospitals

Board Certification: Certification: AMERICAN BOARD OF INTERNAL MEDICINE

Licensed In: California

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. Cheng-Yang Christian Tuan, MD appears to accept the following insurance providers: Cigna, Aetna, Blue Shield of California, UnitedHealthcare, SCAN Health Plan, Anthem, Health Net, Hill Physicians Care Solutions, Central Health Plan, CCHP Health Plan (Chinese Community Health Plan) and Canopy Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. Cheng-Yang Christian Tuan, MD accepts the following insurance providers:

Cigna
Aetna
Blue Shield of California
UnitedHealthcare
SCAN Health Plan
Anthem
Health Net
Hill Physicians Care Solutions
Central Health Plan
CCHP Health Plan (Chinese Community Health Plan)
Canopy Health

Ratings & Reviews

Dr. Cheng-Yang Christian Tuan, MD has a good overall rating with an average of 2.6 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Cheng-Yang Christian Tuan, MD from all over the web to help you find the right in San Francisco, CA. 

2.6
Overall Rating
Leave a Review

General Payments

These charts describe general payments received by Dr. Cheng-Yang Christian Tuan, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Novo Nordisk Inc $341,082 RYBELSUS
$122,313 		Ozempic
$71,111 		Tresiba
$54,506 		Victoza
$46,969 		Xultophy 100/3.6
$16,366 		Other
$29,817
Lilly USA, LLC $214,003 MOUNJARO
$163,432 		JARDIANCE
$34,192 		HUMULIN
$6,431 		TRULICITY
$1,552 		ZEPBOUND
$462 		Other
$7,934
AstraZeneca Pharmaceuticals LP $106,626 FARXIGA
$53,362 		BYDUREON
$48,446 		CRESTOR
$146 		BYDUREON PEN
$62 		BYDUREON WEEKLY
$58 		Other
$4,551
SANOFI-AVENTIS U.S. LLC $69,090 TOUJEO
$27,942 		SOLIQUA 100/33
$22,512 		SOLIQUA
$16,097 		LANTUS
$410 		PRALUENT
$226 		Other
$1,903
Boehringer Ingelheim Pharmaceuticals, Inc. $47,542 JARDIANCE
$47,174 		GLYXAMBI
$235 		TRADJENTA
$80 		JENTADUETO
$31 		OFEV
$4 		Other
$18
Other $143,969 INVOKANA
$40,914 		Kerendia
$29,293 		Repatha
$20,684 		Kazano
$14,982 		Egrifta
$6,270 		Other
$31,826
Types of Payments
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $785,592
Food and Beverage $66,713
Travel and Lodging $38,897
Consulting Fee $29,913
Education $1,146
Other $50

Biography

Dr. Cheng-Yang Tuan's specialty is adult endocrinology. His patients gave him an average rating of 2.5 stars (out of 5). His clinical interests include puberty, pituitary disorders, and high cholesterol (hyperlipidemia). Dr. Tuan is in-network for several insurance carriers, including Blue Shield, Health Net, and Anthem. He attended New York University (NYU) School of Medicine and subsequently trained at a hospital affiliated with the University of California, San Diego (UCSD) for residency. Dr. Tuan (or staff) is conversant in Mandarin. He also offers language support for Filipino and Spanish-speaking patients. His hospital/clinic affiliations include Astrana Health, Chinese Hospital, and All American Medical Group. According to All American Medical Group, he is currently accepting new patients at his office in San Francisco, CA.

Other Providers in San Francisco, CA