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Home > OR Providers > Retina Specialists

Dr. Colin Ma, MD

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Specializes in: Vitreoretinal Diseases (Retina and Vitreous)

3305 Main Street Suite 100
Vancouver, WA 98663

(360) 699-6666

Dr. Colin Ma, MD is a retina specialist in Portland, OR specializing in vitreoretinal diseases (retina and vitreous). Dr. Colin Ma, MD is affiliated with Legacy Good Samaritan Medical Center and Legacy Health.

Office Locations

Legacy Health

2525 Nw Lovejoy Street Suite 100
Portland, OR 97210

(503) 274-2121

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Legacy Health

3305 Main Street Suite 100
Vancouver, WA 98663

(360) 699-6666

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Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2013 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

diagnostic imaging	18
doctor visit	407
eye procedures	3230
injections	1196
photocoagulation	14
phototherapy (light therapy)	17
ultrasound (sonogram)	18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	174
Female	275

**Ethnicity**
Non-Hispanic White	402
Black	0
Hispanic	0
Asian	25
Other	0
Native American	0

**Age**
From 65 to 74	120
From 75 to 84	163
85 and over	124
Less than 65	42

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2013

The most common conditions of Medicare patients that Dr. Colin Ma, MD treated during 2013 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	61
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	10
Diabetes	37
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2014 were eye procedures, injections, photocoagulation and phototherapy (light therapy).

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

doctor visit	291
eye procedures	3403
injections	1199
photocoagulation	31
phototherapy (light therapy)	17

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	175
Female	280

**Ethnicity**
Non-Hispanic White	409
Black	0
Hispanic	0
Asian	23
Other	12
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	154
85 and over	137
Less than 65	40

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2014

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

Hypertension	62
High Cholesterol	47
Stroke	7
Ischemic Heart Disease	29
Depression	18
Chronic Kidney Disease	27
Asthma	6
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	11
Diabetes	40
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2015 were eye procedures, injections and photocoagulation.

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

doctor visit	342
eye procedures	2835
injections	1019
photocoagulation	15

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	344
Female	510

**Ethnicity**
Non-Hispanic White	768
Black	0
Hispanic	0
Asian	40
Other	22
Native American	0

**Age**
From 65 to 74	252
From 75 to 84	282
85 and over	252
Less than 65	68

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2015

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

Hypertension	67
High Cholesterol	47
Stroke	4
Ischemic Heart Disease	30
Depression	21
Chronic Kidney Disease	29
Asthma	10
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	24
Chronic Obstructive Pulmonary Disease	13
Diabetes	36
Dementia	10
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2016 were eye procedures, injections and photocoagulation.

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

doctor visit	147
eye procedures	3128
injections	1093
photocoagulation	22

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	177
Female	271

**Ethnicity**
Non-Hispanic White	405
Black	0
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	148
85 and over	128
Less than 65	31

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2016

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

Hypertension	61
High Cholesterol	40
Stroke	4
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	32
Asthma	12
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	9
Diabetes	35
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2017 were eye procedures and injections.

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

doctor visit	281
eye procedures	2548
injections	946

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	168
Female	243

**Ethnicity**
Non-Hispanic White	368
Black	0
Hispanic	0
Asian	20
Other	11
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	129
85 and over	128
Less than 65	26

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2017

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

Hypertension	65
High Cholesterol	38
Stroke	5
Ischemic Heart Disease	26
Depression	20
Chronic Kidney Disease	34
Asthma	6
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	11
Diabetes	38
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2018 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

diagnostic imaging	13
doctor visit	265
eye procedures	2588
injections	951
ultrasound (sonogram)	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	168
Female	242

**Ethnicity**
Non-Hispanic White	372
Black	0
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	130
85 and over	121
Less than 65	24

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2018

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

Hypertension	65
High Cholesterol	46
Stroke	4
Ischemic Heart Disease	31
Depression	21
Chronic Kidney Disease	37
Asthma	5
Osteoperosis	6
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	10
Diabetes	38
Dementia	13
Cancer	7

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2019 were eye procedures, injections, photocoagulation and diagnostic imaging.

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

diagnostic imaging	15
doctor visit	308
eye procedures	2893
injections	1056
photocoagulation	20
ultrasound (sonogram)	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	206
Female	271

**Ethnicity**
Non-Hispanic White	432
Black	0
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	154
85 and over	130
Less than 65	33

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2019

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

Hypertension	67
High Cholesterol	43
Stroke	6
Ischemic Heart Disease	32
Depression	15
Chronic Kidney Disease	38
Asthma	6
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	24
Chronic Obstructive Pulmonary Disease	8
Diabetes	39
Dementia	12
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2020 were eye procedures and injections.

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

doctor visit	242
eye procedures	2338
injections	892

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	170
Female	221

**Ethnicity**
Non-Hispanic White	356
Black	0
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	132
85 and over	95
Less than 65	29

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2020

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

Hypertension	59
High Cholesterol	42
Stroke	4
Ischemic Heart Disease	32
Depression	17
Chronic Kidney Disease	40
Asthma	4
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	8
Diabetes	39
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2021 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

diagnostic imaging	14
doctor visit	272
eye procedures	2350
injections	879
ultrasound (sonogram)	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	169
Female	241

**Ethnicity**
Non-Hispanic White	364
Black	0
Hispanic	0
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	143
85 and over	88
Less than 65	17

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2021

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

Hypertension	57
High Cholesterol	42
Stroke	3
Ischemic Heart Disease	26
Depression	22
Chronic Kidney Disease	37
Asthma	5
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	8
Diabetes	38
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR during 2022 were eye procedures and injections.

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

doctor visit	237
eye procedures	1932
injections	755

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	150
Female	193

**Ethnicity**
Non-Hispanic White	305
Black	0
Hispanic	0
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	130
85 and over	81
Less than 65	15

Conditions of Medicare patients treated by Dr. Colin Ma, MD in 2022

The most common conditions of Medicare patients that Dr. Colin Ma, MD treated during 2022 were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	75
High Cholesterol	66
Stroke	6
Ischemic Heart Disease	21
Depression	20
Chronic Kidney Disease	27
Asthma	8
Osteoperosis	13
Atrial Fibrilation	19
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	38
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2022

Volume of procedures performed by Dr. Colin Ma, MD for Medicare patients.

The highest averages for the top procedures that Dr. Colin Ma, MD treated as a retina specialist in Portland, OR were eye procedures, injections, photocoagulation and phototherapy (light therapy).

diagnostic imaging	15
doctor visit	279
eye procedures	2724
injections	998
photocoagulation	20
phototherapy (light therapy)	17
ultrasound (sonogram)	15

Average Medicare Patient Data From 2013 - 2022

Information about Medicare patients treated by Dr. Colin Ma, MD.

**Gender**
Male	190
Female	274

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	21
Non-Hispanic White	418
Hispanic	0
Native American / Alaskan Native	0
Other	4

**Age**
75 to 84	156
85 and over	128
Less than 65	32
65 to 74	147

Average of Total of Conditions of Medicare patients treated by Dr. Colin Ma, MD From 2013 - 2022

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

Hypertension	63
High Cholesterol	46
Stroke	4
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	33
Asthma	6
Osteoporosis	8
Heart Failure	22
Chronic Obstructive Pulmonary Disease	10
Diabetes	37
Atrial Fibrillation	15
Dementia	10
Cancer	8

Education & Training

He is certified by the Ophthalmology, Board-certified and has a state license in Oregon.

Board Certification: Ophthalmology, Board-certified

Licensed In: Oregon

Affiliations & Hospitals

Dr. Colin Ma, MD is associated with these hospitals and organizations:

Legacy Good Samaritan Medical Center

Legacy Health

Ratings & Reviews

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General Payments

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

**Payments by Company**
Genentech, Inc.	$272 Non-Covered Product $198	NonCovered Product $74
Regeneron Pharmaceuticals, Inc.	$146 EYLEA aflibercept injection $78	EYLEA (aflibercept) Injection $68

**Types of Payments**
Food and Beverage	$418

Research Payments

Dr. Colin Ma, MD has received 61 research payments totaling $160,561.

Biography

Dr. Colin Ma's area of specialization is vitreoretinal diseases (retina and vitreous). He offers interpreting services for his patients. Dr. Ma is affiliated with Legacy Good Samaritan Medical Center.