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Home > CA Providers > Retina Specialists
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Dr. Theodore Leng, FACS, MD, MS

Accepting New Patients
Specializes in: Vitreoretinal Diseases (Retina and Vitreous)
Stanford University School of Medicine
Professional interests include: cataracts, dislocation, intraocular lens (IOL) implant, and more.
15425 Los Gatos Boulevard Suite 120
Los Gatos, CA 95032

Dr. Theodore Leng, FACS, MD, MS is a retina specialist in Los Gatos, CA specializing in vitreoretinal diseases (retina and vitreous). He graduated from Stanford University School of Medicine. Dr. Theodore Leng, FACS, MD, MS is affiliated with El Camino Health, Brown and Toland Physicians, Stanford Health Care, UNIVERSITY HEALTHCARE ALLIANCE, Lucile Salter Packard Children's Hospital, Ambulatory Specialties, Stanford Health Care, COUNTY OF SANTA CLARA and El Camino Hospital.

View Doctor's Full Profile (408) 340-5700

Office Locations

El Camino Hospital

15425 Los Gatos Boulevard Suite 120
Los Gatos, CA 95032
(408) 340-5700
open_in_new
2452 Watson Court
Palo Alto, CA 94303
open_in_new

El Camino Hospital

27212 Calaroga Avenue
Hayward, CA 94545
(510) 785-5000
open_in_new
300 Pasteur Drive
Palo Alto, CA 94305
open_in_new

In The News 

“This free online event, Thursday, March 7 at 11:30am ET, will feature Dr. Theodore Leng, of Stanford University who is recognized as one of the top 150 worldwide leading innovators in eye care.”—"Virtual Field Announces Webinar Exploring the Latest AI Developments in Ophthalmology with Stanford's Dr. Theodore Leng", FOX 2, March 2024
“Presenting author Theodore Leng, MD, of the Byers Eye Institute at Stanford University in California, explains the results from FARETINA-AMD and its clinical significance.”—"Faricimab for Wet AMD: Real-World Treatment Patterns, Outcomes", MedPage Today, September 2023

Noteworthy Medicare Patient Procedures Performed by Dr. Theodore Leng, FACS, MD, MS in 2023

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

Top 10%

By Volume:

SCODI of the posterior segment

In 2023, Dr. Theodore Leng, FACS, MD, MS performed more SCODI of the posterior segment (SCODI-P) procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

eye procedures
intravitreal drug injection

In 2013, Dr. Theodore Leng, FACS, MD, MS performed more eye procedures, and intravitreal drug injection procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2013 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

diagnostic imaging 37
doctor visit 1407
eye procedures 2823
injections 992
ultrasound (sonogram) 37

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 356
Female 417
Ethnicity
Non-Hispanic White 487
Black 24
Hispanic 92
Asian 146
Other 24
Native American 0
Age
From 65 to 74 287
From 75 to 84 271
85 and over 141
Less than 65 74

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2013

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2013 were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension 63
High Cholesterol 55
Stroke 4
Ischemic Heart Disease 27
Depression 15
Chronic Kidney Disease 23
Asthma 7
Osteoperosis 10
Atrial Fibrilation 11
Heart Failure 14
Chronic Obstructive Pulmonary Disease 8
Diabetes 39
Dementia 8
Cancer 12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2014 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

diagnostic imaging 20
doctor visit 937
eye procedures 3489
injections 1255
ultrasound (sonogram) 20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 402
Female 426
Ethnicity
Non-Hispanic White 513
Black 0
Hispanic 94
Asian 150
Other 36
Native American 0
Age
From 65 to 74 329
From 75 to 84 283
85 and over 150
Less than 65 66

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2014

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2014 were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension 62
High Cholesterol 53
Stroke 5
Ischemic Heart Disease 25
Depression 14
Chronic Kidney Disease 23
Asthma 6
Osteoperosis 8
Atrial Fibrilation 13
Heart Failure 14
Chronic Obstructive Pulmonary Disease 5
Diabetes 39
Dementia 7
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2015 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

diagnostic imaging 24
doctor visit 1128
eye procedures 3429
injections 1244
ultrasound (sonogram) 24

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 720
Female 892
Ethnicity
Non-Hispanic White 992
Black 58
Hispanic 170
Asian 324
Other 68
Native American 0
Age
From 65 to 74 610
From 75 to 84 578
85 and over 298
Less than 65 126

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2015

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2015 were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension 60
High Cholesterol 54
Stroke 5
Ischemic Heart Disease 28
Depression 17
Chronic Kidney Disease 27
Asthma 9
Osteoperosis 9
Atrial Fibrilation 11
Heart Failure 16
Chronic Obstructive Pulmonary Disease 7
Diabetes 37
Dementia 7
Cancer 12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2016 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

diagnostic imaging 26
doctor visit 839
eye procedures 3770
injections 1110
ultrasound (sonogram) 26

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 390
Female 465
Ethnicity
Non-Hispanic White 517
Black 27
Hispanic 88
Asian 193
Other 30
Native American 0
Age
From 65 to 74 337
From 75 to 84 283
85 and over 162
Less than 65 73

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2016

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2016 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 61
High Cholesterol 53
Stroke 5
Ischemic Heart Disease 30
Depression 16
Chronic Kidney Disease 30
Asthma 11
Osteoperosis 10
Atrial Fibrilation 12
Heart Failure 15
Chronic Obstructive Pulmonary Disease 8
Diabetes 35
Dementia 6
Cancer 13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2017 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1323
eye procedures 3287
injections 1169

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 381
Female 482
Ethnicity
Non-Hispanic White 498
Black 29
Hispanic 87
Asian 201
Other 48
Native American 0
Age
From 65 to 74 322
From 75 to 84 296
85 and over 178
Less than 65 67

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2017

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2017 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 62
High Cholesterol 51
Stroke 4
Ischemic Heart Disease 30
Depression 14
Chronic Kidney Disease 30
Asthma 9
Osteoperosis 14
Atrial Fibrilation 13
Heart Failure 14
Chronic Obstructive Pulmonary Disease 7
Diabetes 34
Dementia 8
Cancer 12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2018 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1331
eye procedures 3380
injections 1246

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 392
Female 468
Ethnicity
Non-Hispanic White 488
Black 24
Hispanic 92
Asian 214
Other 42
Native American 0
Age
From 65 to 74 315
From 75 to 84 326
85 and over 158
Less than 65 61

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2018

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2018 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 63
High Cholesterol 54
Stroke 4
Ischemic Heart Disease 31
Depression 14
Chronic Kidney Disease 34
Asthma 9
Osteoperosis 13
Atrial Fibrilation 10
Heart Failure 14
Chronic Obstructive Pulmonary Disease 8
Diabetes 39
Dementia 7
Cancer 12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2019 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1291
eye procedures 3507
injections 1253

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 391
Female 515
Ethnicity
Non-Hispanic White 486
Black 25
Hispanic 107
Asian 234
Other 54
Native American 0
Age
From 65 to 74 349
From 75 to 84 340
85 and over 145
Less than 65 72

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2019

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2019 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 61
High Cholesterol 57
Stroke 4
Ischemic Heart Disease 31
Depression 16
Chronic Kidney Disease 34
Asthma 8
Osteoperosis 14
Atrial Fibrilation 10
Heart Failure 15
Chronic Obstructive Pulmonary Disease 7
Diabetes 40
Dementia 8
Cancer 15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2020 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1008
eye procedures 2921
injections 1124

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 389
Female 473
Ethnicity
Non-Hispanic White 489
Black 31
Hispanic 88
Asian 205
Other 49
Native American 0
Age
From 65 to 74 338
From 75 to 84 302
85 and over 157
Less than 65 65

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2020

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2020 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 62
High Cholesterol 57
Stroke 4
Ischemic Heart Disease 32
Depression 16
Chronic Kidney Disease 37
Asthma 8
Osteoperosis 14
Atrial Fibrilation 11
Heart Failure 17
Chronic Obstructive Pulmonary Disease 7
Diabetes 47
Dementia 9
Cancer 13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2021 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1185
eye procedures 3347
injections 1144

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 449
Female 602
Ethnicity
Non-Hispanic White 579
Black 34
Hispanic 103
Asian 260
Other 75
Native American 0
Age
From 65 to 74 412
From 75 to 84 394
85 and over 183
Less than 65 62

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2021

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2021 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension 61
High Cholesterol 60
Stroke 4
Ischemic Heart Disease 34
Depression 16
Chronic Kidney Disease 38
Asthma 7
Osteoperosis 17
Atrial Fibrilation 10
Heart Failure 17
Chronic Obstructive Pulmonary Disease 6
Diabetes 45
Dementia 9
Cancer 13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2022 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1343
eye procedures 3222
injections 1165

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 474
Female 594
Ethnicity
Non-Hispanic White 607
Black 0
Hispanic 93
Asian 248
Other 88
Native American 0
Age
From 65 to 74 402
From 75 to 84 409
85 and over 192
Less than 65 65

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2022

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2022 were high cholesterol, hypertension, diabetes and ischemic heart disease.

Hypertension 70
High Cholesterol 75
Stroke 8
Ischemic Heart Disease 26
Depression 15
Chronic Kidney Disease 24
Asthma 11
Osteoperosis 21
Atrial Fibrilation 17
Heart Failure 14
Chronic Obstructive Pulmonary Disease 8
Diabetes 45
Dementia 5
Cancer 16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA during 2023 were eye procedures and injections.

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

doctor visit 1494
eye procedures 3332
injections 1185

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 482
Female 586
Ethnicity
Non-Hispanic White 612
Black 26
Hispanic 89
Asian 245
Other 96
Native American 0
Age
From 65 to 74 394
From 75 to 84 400
85 and over 218
Less than 65 56

Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS in 2023

The most common conditions of Medicare patients that Dr. Theodore Leng, FACS, MD, MS treated during 2023 were high cholesterol, hypertension, diabetes and chronic kidney disease.

Hypertension 72
High Cholesterol 75
Stroke 9
Ischemic Heart Disease 25
Depression 15
Chronic Kidney Disease 26
Asthma 9
Osteoperosis 24
Atrial Fibrilation 17
Heart Failure 13
Chronic Obstructive Pulmonary Disease 8
Diabetes 44
Dementia 6
Cancer 19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. Theodore Leng, FACS, MD, MS for Medicare patients.

The highest averages for the top procedures that Dr. Theodore Leng, FACS, MD, MS treated as a retina specialist in Los Gatos, CA were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

diagnostic imaging 26
doctor visit 1207
eye procedures 3318
injections 1171
ultrasound (sonogram) 26

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS.

Gender
Male 438
Female 538
Ethnicity
Black / African American 25
Asian / Pacific Islander 220
Non-Hispanic White 569
Hispanic 100
Native American / Alaskan Native 0
Other 55
Age
75 to 84 352
85 and over 180
Less than 65 71
65 to 74 372

Average of Total of Conditions of Medicare patients treated by Dr. Theodore Leng, FACS, MD, MS From 2013 - 2023

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

Hypertension 63
High Cholesterol 58
Stroke 5
Ischemic Heart Disease 29
Depression 15
Chronic Kidney Disease 29
Asthma 8
Osteoporosis 14
Heart Failure 14
Chronic Obstructive Pulmonary Disease 7
Diabetes 40
Atrial Fibrillation 12
Dementia 7
Cancer 13

Education & Training

Dr. Theodore Leng, FACS, MD, MS graduated from Stanford University School of Medicine. He completed residency at Bascom Palmer Eye Institute. He is certified by the American Board of Ophthalmology, Ophthalmology and has a state license in California.

Medical School: Stanford University School of Medicine

Residency: Bascom Palmer Eye Institute

Board Certification: American Board of Ophthalmology, Ophthalmology

Licensed In: California

Affiliations & Hospitals

Dr. Theodore Leng, FACS, MD, MS is associated with these hospitals and organizations:

El Camino Health
Brown and Toland Physicians
Stanford Health Care
UNIVERSITY HEALTHCARE ALLIANCE
Lucile Salter Packard Children's Hospital
Ambulatory Specialties, Stanford Health Care
COUNTY OF SANTA CLARA
El Camino Hospital

Ratings & Reviews

Dr. Theodore Leng, FACS, MD, MS has an exceptional overall rating with an average of 5.0 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Theodore Leng, FACS, MD, MS from all over the web to help you find the right in Los Gatos, CA. 

5
Overall Rating
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General Payments

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

Payments by Company
Alcon Vision LLC $33,118 Constellation
$17,873 		Alcon Greishaber Finesse
$11,322
$3,923
Genentech, Inc. $31,595 LUCENTIS
$1,668 		Non-Covered Product
$1,636 		VABYSMO
$120
$28,171
F. Hoffmann-La Roche AG $28,861 LUCENTIS
$7,750 		Non-Covered Product
$40
$21,071
Regeneron Healthcare Solutions, Inc. $25,697 Eylea
$25,464 		EYLEA HD
$144 		EYLEA aflibercept injection
$49 		EYLEA (aflibercept) Injection
$40
Boehringer Ingelheim International GmbH $21,146
$21,146
Other $63,427 CIRRUS HD-OCT
$10,344 		EYLEA (aflibercept) Injection
$6,762 		LUCENTIS
$4,448 		VABYSMO
$3,866 		Cirrus HD OCT High Definition Optical Coherence Tomographer
$2,050 		Other
$35,957
Types of Payments
Consulting Fee $177,063
Food and Beverage $7,538
Travel and Lodging $6,756
Compensation for serving as faculty or as a speaker for a non-accredited and noncertified continuing education program $6,594
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $3,874
Other $2,019

Research Payments

Dr. Theodore Leng, FACS, MD, MS has received 26 research payments totaling $298,367.

Biography

Dr. Theodore Leng's medical specialty is vitreoretinal diseases (retina and vitreous). Dr. Leng has a 5.0 out of 5 star average patient rating. He is professionally affiliated with El Camino Health, Brown and Toland Physicians, and Stanford Health Care. El Camino Health reports that he is accepting new patients at his office in PALO ALTO, CA. Dr. Leng attended Stanford University School of Medicine and then went on to complete his residency at Bascom Palmer Eye Institute. In addition to English, he speaks Spanish.

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