Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CA Providers > Ophthalmologists

Dr. Karen Shih, MD

Accepting New Patients

(407 Ratings)

Specializes in: Ophthalmology (Eye Disease)

University of California, San Francisco (UCSF), School of Medicine

Professional interests include: pterygium, cataract surgery, cataracts, and more.

323 N Mathilda Avenue
Sunnyvale, CA 94085

(408) 524-5900

Dr. Karen Shih, MD is an ophthalmologist in Sunnyvale, CA specializing in ophthalmology (eye disease). She graduated from University of California, San Francisco (UCSF), School of Medicine. Dr. Karen Shih, MD is affiliated with Brown and Toland Physicians, Sutter Health and Peninsula Eye Surgery Center.

Office Locations

Sutter Health

1085 West El Camino Real Level 3
Sunnyvale, CA 94087

(408) 524-5900

open_in_new

323 N Mathilda Avenue
Sunnyvale, CA 94085

(408) 524-5900

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Karen Shih, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 25%

By Volume:

anterior segment surgery

extracapsular cataract extraction with IOL implantation

In 2012, Dr. Karen Shih, MD performed more anterior segment surgery, and extracapsular cataract extraction (ECCE) with IOL implantation procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2012 were eye procedures, laser treatment, ultrasound (sonogram) and excision.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	17
doctor visit	860
excision	56
eye procedures	1286
laser treatment	104
ultrasound (sonogram)	60

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2013 were eye procedures, laser treatment, ultrasound (sonogram) and excision.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	21
doctor visit	979
excision	65
eye procedures	1301
laser treatment	134
ultrasound (sonogram)	70

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	236
Female	330

**Ethnicity**
Non-Hispanic White	285
Black	0
Hispanic	46
Asian	197
Other	27
Native American	0

**Age**
From 65 to 74	252
From 75 to 84	213
85 and over	75
Less than 65	26

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2013

Hypertension	54
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	18
Depression	13
Chronic Kidney Disease	20
Asthma	4
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	7
Chronic Obstructive Pulmonary Disease	6
Diabetes	37
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2014 were eye procedures, laser treatment, ultrasound (sonogram) and excision.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	21
doctor visit	1044
excision	47
eye procedures	1469
lacrimal (tearing system) procedures	23
laser treatment	103
ultrasound (sonogram)	47

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	236
Female	331

**Ethnicity**
Non-Hispanic White	279
Black	0
Hispanic	49
Asian	202
Other	26
Native American	0

**Age**
From 65 to 74	233
From 75 to 84	236
85 and over	78
Less than 65	20

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2014

Hypertension	56
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	20
Depression	14
Chronic Kidney Disease	20
Asthma	4
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	36
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2015 were eye procedures, laser treatment, lacrimal (tearing system) procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	31
doctor visit	1078
excision	19
eye procedures	1285
lacrimal (tearing system) procedures	44
laser treatment	97
ultrasound (sonogram)	35

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	534
Female	610

**Ethnicity**
Non-Hispanic White	550
Black	0
Hispanic	92
Asian	422
Other	58
Native American	0

**Age**
From 65 to 74	476
From 75 to 84	490
85 and over	150
Less than 65	28

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2015

Hypertension	52
High Cholesterol	47
Stroke	4
Ischemic Heart Disease	20
Depression	15
Chronic Kidney Disease	19
Asthma	5
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	32
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2016 were eye procedures, laser treatment, ultrasound (sonogram) and capsulotomy.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	27
doctor visit	718
excision	23
eye procedures	791
laser treatment	96
ultrasound (sonogram)	32

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	198
Female	249

**Ethnicity**
Non-Hispanic White	221
Black	11
Hispanic	41
Asian	150
Other	24
Native American	0

**Age**
From 65 to 74	189
From 75 to 84	187
85 and over	59
Less than 65	12

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2016

Hypertension	52
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	19
Depression	17
Chronic Kidney Disease	24
Asthma	7
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	7
Chronic Obstructive Pulmonary Disease	6
Diabetes	32
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2017 were eye procedures, laser treatment, ultrasound (sonogram) and excision.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	30
doctor visit	1172
excision	36
eye procedures	1288
laser treatment	99
ultrasound (sonogram)	50

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	296
Female	391

**Ethnicity**
Non-Hispanic White	334
Black	14
Hispanic	48
Asian	240
Other	51
Native American	0

**Age**
From 65 to 74	283
From 75 to 84	283
85 and over	96
Less than 65	25

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2017

Hypertension	54
High Cholesterol	43
Stroke	2
Ischemic Heart Disease	19
Depression	19
Chronic Kidney Disease	27
Asthma	3
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	34
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2018 were eye procedures, laser treatment, capsulotomy and excision.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	32
doctor visit	1166
excision	23
eye procedures	1244
lacrimal (tearing system) procedures	16
laser treatment	91
ultrasound (sonogram)	20

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	277
Female	400

**Ethnicity**
Non-Hispanic White	334
Black	0
Hispanic	41
Asian	245
Other	46
Native American	0

**Age**
From 65 to 74	248
From 75 to 84	323
85 and over	93
Less than 65	13

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2018

Hypertension	57
High Cholesterol	50
Stroke	3
Ischemic Heart Disease	21
Depression	17
Chronic Kidney Disease	26
Asthma	4
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	31
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2019 were eye procedures, laser treatment, ultrasound (sonogram) and capsulotomy.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	24
doctor visit	1157
eye procedures	1192
lacrimal (tearing system) procedures	18
laser treatment	46
ultrasound (sonogram)	30

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	281
Female	383

**Age**
From 65 to 74	240
From 75 to 84	308
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2019

Hypertension	53
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	20
Depression	16
Chronic Kidney Disease	25
Asthma	5
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	30
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2020 were eye procedures and laser treatment.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

doctor visit	685
eye procedures	656
laser treatment	20

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	191
Female	255

**Ethnicity**
Non-Hispanic White	218
Black	0
Hispanic	0
Asian	152
Other	38
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	214
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2020

Hypertension	47
High Cholesterol	47
Stroke	2
Ischemic Heart Disease	20
Depression	13
Chronic Kidney Disease	25
Asthma	3
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	32
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2021 were eye procedures, laser treatment, capsulotomy and ultrasound (sonogram).

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	29
doctor visit	1033
eye procedures	1285
laser treatment	78
ultrasound (sonogram)	13

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	232
Female	346

**Ethnicity**
Non-Hispanic White	287
Black	0
Hispanic	0
Asian	198
Other	54
Native American	0

**Age**
From 65 to 74	209
From 75 to 84	269
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2021

Hypertension	54
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	20
Depression	11
Chronic Kidney Disease	24
Asthma	3
Osteoperosis	11
Atrial Fibrilation	7
Heart Failure	6
Chronic Obstructive Pulmonary Disease	4
Diabetes	32
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA during 2022 were eye procedures, laser treatment, capsulotomy and excision.

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

capsulotomy	46
doctor visit	1051
excision	24
eye procedures	1282
laser treatment	110

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	228
Female	378

**Ethnicity**
Non-Hispanic White	291
Black	0
Hispanic	0
Asian	214
Other	54
Native American	0

**Age**
From 65 to 74	199
From 75 to 84	292
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Karen Shih, MD in 2022

Hypertension	67
High Cholesterol	71
Stroke	4
Ischemic Heart Disease	17
Depression	11
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	19
Atrial Fibrilation	12
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	33
Dementia	4
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Karen Shih, MD for Medicare patients.

The highest averages for the top procedures that Dr. Karen Shih, MD treated as an ophthalmologist in Sunnyvale, CA were eye procedures, laser treatment, ultrasound (sonogram) and excision.

capsulotomy	27
doctor visit	994
excision	36
eye procedures	1189
lacrimal (tearing system) procedures	25
laser treatment	88
ultrasound (sonogram)	39

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Karen Shih, MD.

**Gender**
Male	246
Female	333

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	183
Non-Hispanic White	254
Native American / Alaskan Native	0
Hispanic	28
Other	34

**Age**
75 to 84	255
85 and over	50
Less than 65	11
65 to 74	226

Average of Total of Conditions of Medicare patients treated by Dr. Karen Shih, MD From 2012 - 2022

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

Hypertension	49
High Cholesterol	45
Stroke	2
Ischemic Heart Disease	17
Depression	13
Chronic Kidney Disease	20
Asthma	4
Osteoporosis	8
Heart Failure	6
Chronic Obstructive Pulmonary Disease	4
Diabetes	29
Atrial Fibrillation	7
Dementia	5
Cancer	9

Education & Training

Dr. Karen Shih, MD graduated from University of California, San Francisco (UCSF), School of Medicine. She completed residency at Jules Stein Eye Institute. She is certified by the American Board of Ophthalmology and has a state license in California.

Medical School: University of California, San Francisco (UCSF), School of Medicine

Residency: Jules Stein Eye Institute (2008)

Board Certification: American Board of Ophthalmology

Licensed In: California

Affiliations & Hospitals

Dr. Karen Shih, MD is associated with these hospitals and organizations:

Brown and Toland Physicians

Sutter Health

Peninsula Eye Surgery Center

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. Karen Shih, MD appears to accept the following insurance providers: Blue Shield of California, Medicare Advantage, HealthSmart, MultiPlan, United Healthcare, TRICARE, Cigna, Alliance PPO, Anthem Blue Cross of California, Private Healthcare Systems (PHCS), Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only, Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP), Accepted SCAN Plans: SCAN Compass (HMO), Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP), Accepted Provider Networks of America Plans: PPO, Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO, Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including... and Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund....

Insurance Accepted by Provider includes:

According to our sources, Dr. Karen Shih, MD accepts the following insurance providers:

Blue Shield of California

Medicare Advantage

HealthSmart

MultiPlan

United Healthcare

TRICARE

Cigna

Alliance PPO

Anthem Blue Cross of California

Private Healthcare Systems (PHCS)

Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only

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

Accepted SCAN Plans: SCAN Compass (HMO)

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

Accepted Provider Networks of America Plans: PPO

Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO

Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including...

Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund...

Ratings & Reviews

Dr. Karen Shih, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 407 ratings. We collect ratings and reviews of Dr. Karen Shih, MD from all over the web to help you find the right in Sunnyvale, CA.

4.9

Overall Rating

(407 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Alcon Vision LLC	$155 $155
Bausch and Lomb Inc.	$143 LOTEMAX GEL $143
Abbott Laboratories	$74 Optics $74
Allergan Inc.	$23 LUMIGAN $23
Carl Zeiss Meditec AG	$19 None Specified $19
Other	$23 Ilevro $10	$13

**Types of Payments**
Food and Beverage	$405
Gift	$19
Travel and Lodging	$12

Biography

Dr. Karen Shih is an ophthalmology (eye disease) specialist in Sunnyvale, CA. Patients gave her an average rating of 5.0 stars (out of 5). In her practice, she is particularly interested in pterygium, cataract surgery, and cataracts. Dr. Shih appears to be an in-network provider for Anthem, Blue California, and HealthSmart, in addition to other insurance carriers. She studied medicine at the University of California, San Francisco (UCSF), School of Medicine. She completed her residency training at Jules Stein Eye Institute. Dr. Shih (or staff) speaks the following languages: Mandarin and Spanish. Dr. Shih is professionally affiliated with Brown and Toland Physicians and Sutter Health. Her practice in Sunnyvale, CA is open to new patients as reported by Brown and Toland Physicians.