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Dr. Woody Chang, MD

Accepting New Patients

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Specializes in: Internal Medicine (Adult Medicine) and Geriatrics (Elderly Care)

Stanford University School of Medicine

Professional interests include: dementia, elder care, hospice (end-of-life care), and more.

301 Old San Francisco Road Floor 1 Geriatrics
Sunnyvale, CA 94086

(408) 730-6250

Dr. Woody Chang, MD is an internist in Sunnyvale, CA specializing in internal medicine (adult medicine) and geriatrics (elderly care). He graduated from Stanford University School of Medicine. Dr. Woody Chang, MD is affiliated with El Camino Health, Sutter Health and SUTTER BAY MEDICAL FOUNDATION.

Office Locations

301 Old San Francisco Road Floor 1 Geriatrics
Sunnyvale, CA 94086

(408) 730-6250

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Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2018 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	107

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	11
Female	14

**Ethnicity**
Non-Hispanic White	14
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	0
Depression	68
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	44
Dementia	64
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2019 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	650

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	60
Female	88

**Ethnicity**
Non-Hispanic White	111
Black	0
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	53
85 and over	67
Less than 65	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2019

Hypertension	75
High Cholesterol	68
Stroke	11
Ischemic Heart Disease	47
Depression	58
Chronic Kidney Disease	50
Asthma	13
Osteoperosis	28
Atrial Fibrilation	24
Heart Failure	45
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	44
Cancer	18

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2020 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	487

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	37
Female	38

**Ethnicity**
Non-Hispanic White	58
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	22
85 and over	35
Less than 65	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2020

Hypertension	75
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	44
Depression	67
Chronic Kidney Disease	52
Asthma	0
Osteoperosis	27
Atrial Fibrilation	24
Heart Failure	47
Chronic Obstructive Pulmonary Disease	0
Diabetes	41
Dementia	44
Cancer	28

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2021 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	619

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	36
Female	60

**Ethnicity**
Non-Hispanic White	70
Black	0
Hispanic	0
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	32
85 and over	42
Less than 65	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	48
Depression	46
Chronic Kidney Disease	63
Asthma	15
Osteoperosis	38
Atrial Fibrilation	30
Heart Failure	44
Chronic Obstructive Pulmonary Disease	0
Diabetes	25
Dementia	35
Cancer	20

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2022 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	639

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	34
Female	65

**Ethnicity**
Non-Hispanic White	75
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	40
85 and over	42
Less than 65	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	35
Depression	40
Chronic Kidney Disease	60
Asthma	16
Osteoperosis	36
Atrial Fibrilation	46
Heart Failure	43
Chronic Obstructive Pulmonary Disease	18
Diabetes	33
Dementia	29
Cancer	23

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2023 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	863

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	51
Female	80

**Ethnicity**
Non-Hispanic White	94
Black	0
Hispanic	0
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	51
85 and over	62
Less than 65	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	39
Depression	42
Chronic Kidney Disease	64
Asthma	13
Osteoperosis	39
Atrial Fibrilation	35
Heart Failure	35
Chronic Obstructive Pulmonary Disease	15
Diabetes	34
Dementia	40
Cancer	23

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA during 2024 were nursing home care.

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

nursing home care	851

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	55
Female	83

**Ethnicity**
Non-Hispanic White	106
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	53
85 and over	69
Less than 65	0

Conditions of Medicare patients treated by Dr. Woody Chang, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	25
Ischemic Heart Disease	33
Depression	45
Chronic Kidney Disease	51
Asthma	16
Osteoperosis	40
Atrial Fibrilation	40
Heart Failure	35
Chronic Obstructive Pulmonary Disease	17
Diabetes	38
Dementia	42
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2018 - 2024

Volume of procedures performed by Dr. Woody Chang, MD for Medicare patients.

The highest averages for the top procedures that Dr. Woody Chang, MD treated as an internist in Sunnyvale, CA were nursing home care.

nursing home care	602

Average Medicare Patient Data From 2018 - 2024

Information about Medicare patients treated by Dr. Woody Chang, MD.

**Gender**
Male	40
Female	61

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	8
Non-Hispanic White	75
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	35
85 and over	45
Less than 65	0
65 to 74	0

Average of Total of Conditions of Medicare patients treated by Dr. Woody Chang, MD From 2018 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Woody Chang, MD treated were hypertension, high cholesterol, chronic kidney disease and depression.

Hypertension	75
High Cholesterol	72
Stroke	7
Ischemic Heart Disease	35
Depression	52
Chronic Kidney Disease	55
Asthma	10
Osteoporosis	29
Heart Failure	35
Chronic Obstructive Pulmonary Disease	9
Diabetes	35
Atrial Fibrillation	28
Cancer	18
Dementia	42

Education & Training

Dr. Woody Chang, MD graduated from Stanford University School of Medicine. He completed residency at University of Pittsburgh Medical Center (UPMC). He has a state license in California.

Medical School: Stanford University School of Medicine

Residency: University of Pittsburgh Medical Center (UPMC)

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. Woody Chang, MD appears to accept the following insurance providers: Private Healthcare Systems (PHCS), WellCare, Medicare Advantage, MultiPlan, Anthem Blue Cross of California, Blue Shield of California, United Healthcare, Cigna, Alliance PPO, HealthSmart, Aetna: Aetna Signature Administrators (ASA), Aetna: Quality Point of Service (QPOS), Aetna: Aetna Student Health Program, Aetna: National Advantage Plan (NAP), Health Net - Currently in 2027 Contract Negotiations: SELECT three-tier POS and SELECT two-tier POS, Large and Small Group, Health Net - Currently in 2027 Contract Negotiations: Health Net HMO: Large Group (101+ employees) & Small Group (2-100 employees), Central California Alliance for Health: TotalCare (HMO D-SNP), Health Net - Currently in 2027 Contract Negotiations: ELECT Open Access POS, Large and Small Group, Health Net - Currently in 2027 Contract Negotiations: ELECT POS, Large and Small Group, TRICARE: Prime Remote, Aetna: Stanford University Faculty & Staff (SUFS) - Copay Plan - Open Access Aetna Select, Health Net - Currently in 2027 Contract Negotiations: Salud HMO Plus Large/Custom Group, TRICARE: Select (formerly TRICARE Standard and TRICARE Extra), TRICARE: Retired Reserve, Aetna: Aetna Choice POS II, Aetna: Traditional Choice, Aetna: HMO Deductible Plans, Aetna: Managed Choice POS, Aetna: Health Fund POS, Aetna: Open Access Elect Choice EPO, SCAN: SCAN Compass (HMO), Aetna: Stanford University Faculty & Staff (SUFS) ACA High Deductible Health Plan POS II (ACA HDHP-POS II), Aetna: Aetna Select Open Access, Sutter Health Plan: Individual and Family Plan HMO, Provider Networks of America: PPO, Valley Health Plan - Currently in 2027 Contract Negotiations: Classic Commercial HMO Plan only, Aetna: Health Fund HMO (aka HMO/HRA), TRICARE: Reserve Select, Health Net - Currently in 2027 Contract Negotiations: PPO for Small Business Health Options Program (SHOP)/Covered California, Santa Clara Family Health Plan: DualConnect (HMO D-SNP), Aetna: Open Access Managed Choice POS, Health Net - Currently in 2027 Contract Negotiations: Health Net PPO, TRICARE: Extended Care Option (ECHO), Aetna: HMO, Sutter Health Plan: Large and Small Group HMO, TRICARE: Prime, Aetna: Open Choice PPO, Aetna: Aetna Select EPO, Aetna: Stanford University Faculty & Staff (SUFS) High Deductible Health Plan POS II (HDHP POS II) and TRICARE: Young Adult.

Insurance Accepted by Provider includes:

According to our sources, Dr. Woody Chang, MD accepts the following insurance providers:

Private Healthcare Systems (PHCS)

WellCare

Medicare Advantage

MultiPlan

Anthem Blue Cross of California

Blue Shield of California

United Healthcare

Cigna

Alliance PPO

HealthSmart

Aetna: Aetna Signature Administrators (ASA)

Aetna: Quality Point of Service (QPOS)

Aetna: Aetna Student Health Program

Aetna: National Advantage Plan (NAP)

Health Net - Currently in 2027 Contract Negotiations: SELECT three-tier POS and SELECT two-tier POS, Large and Small Group

Health Net - Currently in 2027 Contract Negotiations: Health Net HMO: Large Group (101+ employees) & Small Group (2-100 employees)

Central California Alliance for Health: TotalCare (HMO D-SNP)

Health Net - Currently in 2027 Contract Negotiations: ELECT Open Access POS, Large and Small Group

Health Net - Currently in 2027 Contract Negotiations: ELECT POS, Large and Small Group

TRICARE: Prime Remote

Aetna: Stanford University Faculty & Staff (SUFS) - Copay Plan - Open Access Aetna Select

Health Net - Currently in 2027 Contract Negotiations: Salud HMO Plus Large/Custom Group

TRICARE: Select (formerly TRICARE Standard and TRICARE Extra)

TRICARE: Retired Reserve

Aetna: Aetna Choice POS II

Aetna: Traditional Choice

Aetna: HMO Deductible Plans

Aetna: Managed Choice POS

Aetna: Health Fund POS

Aetna: Open Access Elect Choice EPO

SCAN: SCAN Compass (HMO)

Aetna: Stanford University Faculty & Staff (SUFS) ACA High Deductible Health Plan POS II (ACA HDHP-POS II)

Aetna: Aetna Select Open Access

Sutter Health Plan: Individual and Family Plan HMO

Provider Networks of America: PPO

Valley Health Plan - Currently in 2027 Contract Negotiations: Classic Commercial HMO Plan only

Aetna: Health Fund HMO (aka HMO/HRA)

TRICARE: Reserve Select

Health Net - Currently in 2027 Contract Negotiations: PPO for Small Business Health Options Program (SHOP)/Covered California

Santa Clara Family Health Plan: DualConnect (HMO D-SNP)

Aetna: Open Access Managed Choice POS

Health Net - Currently in 2027 Contract Negotiations: Health Net PPO

TRICARE: Extended Care Option (ECHO)

Aetna: HMO

Sutter Health Plan: Large and Small Group HMO

TRICARE: Prime

Aetna: Open Choice PPO

Aetna: Aetna Select EPO

Aetna: Stanford University Faculty & Staff (SUFS) High Deductible Health Plan POS II (HDHP POS II)

TRICARE: Young Adult

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Biography

Dr. Woody Chang sees patients in Sunnyvale, CA. His medical specialty is geriatrics (elderly care). Dr. Chang graduated from Stanford University School of Medicine and then he performed his residency at the University of Pittsburgh Medical Center (UPMC). His areas of expertise include hospice (end-of-life care), medication management, and elder care. He seems to honor Anthem, Blue Cross/Blue Shield, HealthSmart, and more. He is professionally affiliated with El Camino Health and Sutter Health. He welcomes new patients at his office inSunnyvale, CA as reported by El Camino Health.