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Home > CA Providers > Ophthalmologists

Dr. Mark Terrence Fay, MD

(No ratings)

Specializes in: Ophthalmology (Eye Disease)

2640 Biehn Street
Klamath Falls, OR 97601

(541) 884-3148

Dr. Mark Terrence Fay, MD is an ophthalmologist in Alturas, CA specializing in ophthalmology (eye disease).

Office Locations

1201 Thomason Lane
Alturas, CA 96101

(530) 233-2020

open_in_new

2640 Biehn Street
Klamath Falls, OR 97601

(541) 884-3148

(541) 884-3373

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Mark Terrence Fay, MD in 2023

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

Top 10%

By Affordability:

eye exam

intravitreal drug injection

intravitreal injection

In 2023, Dr. Mark Terrence Fay, MD had a list price for eye exam, intravitreal drug injection, and intravitreal injection that was lower than the list prices billed to Medicare by 90% of providers in related specialties within California. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

eye procedures

laser surgery

SCODI of the posterior segment

YAG laser capsulotomy

By Affordability:

eye injection

intraocular injection

laser eye surgery

ophthalmic ultrasound

secondary cataract surgery

YAG laser capsulotomy

YAG laser surgery

In 2012, among providers in related specialties within California, Dr. Mark Terrence Fay, MD performed more eye procedures, laser surgery, SCODI of the posterior segment (SCODI-P), and YAG laser capsulotomy procedures for Medicare patients than 75% of them and he also had a list price for eye injection, intraocular injection, laser eye surgery, ophthalmic ultrasound, secondary cataract surgery, YAG laser capsulotomy, and YAG laser surgery that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2012 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	61
diagnostic procedures	13
doctor visit	540
excision	12
eye procedures	4137
injections	207
laser treatment	61
plastic surgery procedures	28
removal of lesion (e.g. growth)	12
ultrasound (sonogram)	50

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2013 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	65
diagnostic procedures	12
doctor visit	519
excision	12
eye procedures	4378
injections	311
laser treatment	65
plastic surgery procedures	26
removal of lesion (e.g. growth)	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	609
Female	939

**Ethnicity**
Non-Hispanic White	1450
Black	0
Hispanic	43
Asian	0
Other	14
Native American	25

**Age**
From 65 to 74	618
From 75 to 84	595
85 and over	269
Less than 65	66

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2013

Hypertension	55
High Cholesterol	42
Stroke	3
Ischemic Heart Disease	27
Depression	14
Chronic Kidney Disease	14
Asthma	4
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2014 were eye procedures, injections, laser treatment and capsulotomy.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	77
doctor visit	528
eye procedures	4281
injections	361
laser treatment	90
plastic surgery procedures	24
ultrasound (sonogram)	20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	559
Female	882

**Ethnicity**
Non-Hispanic White	1352
Black	0
Hispanic	35
Asian	0
Other	0
Native American	26

**Age**
From 65 to 74	593
From 75 to 84	552
85 and over	228
Less than 65	68

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2014

Hypertension	58
High Cholesterol	41
Stroke	3
Ischemic Heart Disease	27
Depression	14
Chronic Kidney Disease	16
Asthma	3
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2015 were eye procedures, injections, laser treatment and capsulotomy.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	78
doctor visit	604
excision	20
eye procedures	4887
injections	421
laser treatment	93
plastic surgery procedures	27
removal of lesion (e.g. growth)	20
ultrasound (sonogram)	18

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	1382
Female	2056

**Ethnicity**
Non-Hispanic White	3204
Black	0
Hispanic	102
Asian	0
Other	34
Native American	66

**Age**
From 65 to 74	1406
From 75 to 84	1278
85 and over	560
Less than 65	194

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2015

Hypertension	57
High Cholesterol	42
Stroke	2
Ischemic Heart Disease	26
Depression	15
Chronic Kidney Disease	17
Asthma	8
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	30
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2016 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	76
doctor visit	589
excision	21
eye procedures	5237
injections	486
laser treatment	76
plastic surgery procedures	19
removal of lesion (e.g. growth)	21
ultrasound (sonogram)	53

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	750
Female	1055

**Ethnicity**
Non-Hispanic White	1681
Black	0
Hispanic	52
Asian	0
Other	19
Native American	31

**Age**
From 65 to 74	725
From 75 to 84	684
85 and over	303
Less than 65	93

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2016

Hypertension	57
High Cholesterol	41
Stroke	2
Ischemic Heart Disease	26
Depression	17
Chronic Kidney Disease	22
Asthma	13
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	28
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2017 were eye procedures, injections, laser treatment and capsulotomy.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	61
doctor visit	941
excision	24
eye procedures	5337
injections	567
laser treatment	78
plastic surgery procedures	27
removal of lesion (e.g. growth)	24
ultrasound (sonogram)	15

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	774
Female	1130

**Ethnicity**
Non-Hispanic White	1762
Black	11
Hispanic	57
Asian	12
Other	27
Native American	35

**Age**
From 65 to 74	776
From 75 to 84	706
85 and over	306
Less than 65	116

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2017

Hypertension	55
High Cholesterol	33
Stroke	3
Ischemic Heart Disease	27
Depression	18
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2018 were eye procedures, injections, laser treatment and capsulotomy.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	76
doctor visit	734
excision	19
eye procedures	4984
injections	488
laser treatment	89
plastic surgery procedures	27
removal of lesion (e.g. growth)	19
ultrasound (sonogram)	14

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	705
Female	1070

**Ethnicity**
Non-Hispanic White	1653
Black	0
Hispanic	45
Asian	0
Other	26
Native American	30

**Age**
From 65 to 74	691
From 75 to 84	689
85 and over	307
Less than 65	88

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2018

Hypertension	58
High Cholesterol	42
Stroke	2
Ischemic Heart Disease	28
Depression	17
Chronic Kidney Disease	23
Asthma	4
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	31
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2019 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	69
doctor visit	522
excision	15
eye procedures	4599
injections	453
laser treatment	69
plastic surgery procedures	12
removal of lesion (e.g. growth)	15
ultrasound (sonogram)	39

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	609
Female	943

**Ethnicity**
Non-Hispanic White	1433
Black	0
Hispanic	48
Asian	0
Other	27
Native American	29

**Age**
From 65 to 74	599
From 75 to 84	643
85 and over	247
Less than 65	63

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2019

Hypertension	58
High Cholesterol	42
Stroke	3
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	30
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2020 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	53
doctor visit	388
eye procedures	4209
injections	471
laser treatment	53
plastic surgery procedures	15
ultrasound (sonogram)	30

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	531
Female	848

**Ethnicity**
Non-Hispanic White	1276
Black	0
Hispanic	40
Asian	0
Other	28
Native American	18

**Age**
From 65 to 74	539
From 75 to 84	580
85 and over	209
Less than 65	51

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2020

Hypertension	53
High Cholesterol	38
Stroke	2
Ischemic Heart Disease	25
Depression	14
Chronic Kidney Disease	22
Asthma	4
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2021 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	57
doctor visit	777
excision	20
eye procedures	3954
injections	522
laser treatment	57
plastic surgery procedures	20
removal of lesion (e.g. growth)	20
ultrasound (sonogram)	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	529
Female	834

**Ethnicity**
Non-Hispanic White	1248
Black	0
Hispanic	50
Asian	0
Other	32
Native American	20

**Age**
From 65 to 74	516
From 75 to 84	591
85 and over	206
Less than 65	50

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2021

Hypertension	59
High Cholesterol	41
Stroke	2
Ischemic Heart Disease	26
Depression	16
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA during 2022 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

capsulotomy	51
doctor visit	1756
excision	16
eye procedures	2830
injections	493
laser treatment	51
plastic surgery procedures	15
removal of lesion (e.g. growth)	16
ultrasound (sonogram)	13

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	514
Female	775

**Ethnicity**
Non-Hispanic White	1182
Black	0
Hispanic	44
Asian	0
Other	28
Native American	22

**Age**
From 65 to 74	461
From 75 to 84	579
85 and over	203
Less than 65	46

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2022

Hypertension	70
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	19
Depression	17
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	11
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	4
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark Terrence Fay, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark Terrence Fay, MD treated as an ophthalmologist in Alturas, CA were eye procedures, injections, laser treatment and capsulotomy.

capsulotomy	65
diagnostic procedures	12
doctor visit	718
excision	17
eye procedures	4439
injections	434
laser treatment	71
plastic surgery procedures	21
removal of lesion (e.g. growth)	17
ultrasound (sonogram)	26

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark Terrence Fay, MD.

**Gender**
Male	632
Female	957

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	1
Non-Hispanic White	1476
Native American / Alaskan Native	27
Hispanic	46
Other	21

**Age**
75 to 84	627
85 and over	258
Less than 65	75
65 to 74	629

Average of Total of Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark Terrence Fay, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	52
High Cholesterol	38
Stroke	2
Ischemic Heart Disease	23
Depression	14
Chronic Kidney Disease	18
Asthma	5
Osteoporosis	6
Heart Failure	11
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Atrial Fibrillation	10
Dementia	6
Cancer	8

Education & Training

He has a state license in Oregon.

Licensed In: Oregon

Ratings & Reviews

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General Payments

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

**Payments by Company**
Optos, Inc.	$1,776 scanning laser ophthalmoscope $1,776
optos plc	$950 scanning laser ophthalmoscope $950
AbbVie, Inc.	$505 Humira $505
Alcon Vision LLC	$335 Centurion $85	ARGOS $53	AcrySof IQ PanOptix $49	CLAREON $49	AcrySof IQ VIVITY $47	Other $52
Alcon Laboratories Inc	$327 CataractEquipment $76	Cataract Equipment $68	Simbrinza $42	ReSTOR $18	Pazeo $15	Other $107
Other	$689 AmnioGuard $165	Eylea $144	RESTASIS $62	XIIDRA $48	Tecnis Toric 1-piece IOL $41	Other $229

**Types of Payments**
Travel and Lodging	$2,626
Food and Beverage	$1,798
Education	$124
Gift	$33

Biography

Dr. Mark Fay's area of specialization is ophthalmology (eye disease). He graduated from the University of Washington School of Medicine.

Select Year:

Dr. Mark Terrence Fay, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Mark Terrence Fay, MD in 2023

By Affordability:

By Volume:

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Mark Terrence Fay, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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