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Home > DC Providers > Retina Specialists

Dr. Thomas Mark Johnson, FRCS(C), MD

(1 Rating)

Specializes in: Vitreoretinal Diseases (Retina and Vitreous)

Professional interests include: fundus photography, tonometry, cornea problems, and more.

3800 Reservoir Road Nw
Washington, DC 20007

(202) 444-2000

Dr. Thomas Mark Johnson, FRCS(C), MD is a retina specialist in Washington, DC specializing in vitreoretinal diseases (retina and vitreous). Dr. Thomas Mark Johnson, FRCS(C), MD is affiliated with MedStar Georgetown University Hospital, MedStar Washington Hospital Center and MedStar Health.

Office Locations

110 Irving Street Nw
Washington, DC 20010

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1500 Dixon Street #204
Fredericksburg, VA 22401

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200 Executive Center Parkway Suite 102
Fredericksburg, VA 22401

(540) 654-5333

(540) 654-5334

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MedStar Health

3800 Reservoir Road Nw
Washington, DC 20007

(202) 444-2000

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Some issues Dr. Thomas Mark Johnson, FRCS(C), MD can help you with:

Eye Problems

Millions of people every year have problems with their eyes. Some of the most common eye problems are refractive disorders, glaucoma, diabetic retinopathy, macular degeneration, and cataracts.

Refractive disorders happen when the shape of the eye doesn't let allow someone focus very precisely. They might be myopic (nearsighted), hyperopic (farsighted), or have an astigmatism, which is a focus problem caused by the cornea. Refractive disorders can be corrected by glasses or contacts.

Glaucoma is the leading cause of blindness in the United States. It happens when fluid pressure builds up within the eye and damages the optic nerve. It is treated with medications and surgery.

Diabetic retinopathy is a common complication of diabetes. The retina is tissue at the back of the eye that is filled with numerous, tiny blood vessels. When diabetes damages these delicate blood vessels, they burst or leak, leading to blind spots and blurred vision. Diabetic retinopathy can be treated with laser therapy and surgery, but often vision cannot be restored.

Macular degeneration is common in older adults. The macula is the central part of the retina and is responsible for crisp center vision. Over time, the cells in the macula begin to die, making central vision blurry. An early symptom of macular degeneration is that straight lines appear wavy.

Cataracts happen when the clear lens in the front of the eye becomes cloudy, making things look blurry or faded. They are extremely common in older people. By age 80, more than half of all Americans will have had a cataract. In early stages, prescription glasses and magnifying lenses can help. As the cataracts get worse, surgery to replace the lens may be the best option.

More than just one of the five senses, the eyes are heavily relied upon to communicate, work, and get around every day. It's important to have regular eye exams for vision stays in good shape for years to come.

LASIK

LASIK (laser-assisted in situ keratomileusis) is a surgical procedure that improves vision by permanently correcting refractive vision errors. Refractive vision errors are sight problems (such as nearsightedness, farsightedness, and astigmatism) that typically require patients to wear contact lenses or glasses. Nearsightedness (myopia) causes blurred vision at a distance, while farsightedness (hyperopia) makes objects that are up close appear blurry. Astigmatism results in blurred vision at both near and far distances. Each eye is either nearsighted or farsighted, and can additionally have astigmatism. These refractive vision errors develop from imperfections in the curvature of the eye, which LASIK fixes through the use of a laser. The laser changes the shape of the eye by cutting away tissue from the cornea (clear outer layer of the eye).

LASIK is generally considered an elective procedure (not medically necessary) since patients can wear glasses or contact lenses instead of undergoing LASIK. Nevertheless, many people still elect to undergo LASIK to have better vision without having to wear corrective lenses. Certain professionals, such as pilots, military members, firefighters, and athletes, might particularly benefit from LASIK.

Ophthalmologists (eye doctors) evaluate patients before surgery, measuring the cornea and checking for any eye irregularities that would disqualify patients from LASIK. A special eye scanner is used to create a map of the cornea. This map guides the surgeon in developing an individualized LASIK treatment plan. Once approved for LASIK, contact-wearers are advised to switch to glasses for the three weeks leading up to their surgery.

LASIK is a brief procedure, lasting for about half an hour, depending on the state of a patient's eyes and the corneal reshaping required. Patients lie down on a reclining chair and have numbing eye drops applied to one or both eyes to eliminate pain and discomfort during the procedure. While the eyes are held open by a device, the eye surgeon raises a fixation light where patients direct their eyes. The surgeon uses a femtosecond laser to cut a precise circular incision in the cornea's surface. The surgeon then manually folds back the corneal flap to access the stroma (inner cornea).

An excimer laser is then used to remove certain amounts of corneal tissue. For patients with farsightedness, the laser cuts tissue on the outer regions of the cornea, making the central cornea more prominent. For patients with nearsightedness, the opposite is done; central corneal tissue is removed while the outer tissue is left alone, flattening the eye. In patients with astigmatism, the laser is used to even out the surface of the corneal tissue, making the eye more spherical. When the lasering process is complete, the ophthalmologist folds the corneal flap to its regular position. The flap quickly begins to heal and naturally reattach itself to the eye.

LASIK patients need someone to drive them home from the procedure and cannot drive for the following 24 hours. Recovery from LASIK lasts about five days. Patients typically notice improved vision within a day or two of surgery. Prescription eye drops are given to patients to alleviate discomfort and promote eye healing. During this recovery time, patients must be incredibly careful not to touch or rub their eyes. Ophthalmologists often instruct patients to wear protective glasses during the day and night to prevent potential damage from eye rubbing.

LASIK can improve the experience of certain activities such as swimming or reading, and in some cases, LASIK can be a life-changing procedure for those with severe refractive vision errors. LASIK may also save patients money by eliminating the recurring need for updated corrective lenses.

Noteworthy Medicare Patient Procedures Performed by Dr. Thomas Mark Johnson, FRCS(C), MD in 2023

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

Top 5%

By Volume:

comprehensive eye exam

eye procedures

SCODI of the posterior segment

In 2023, Dr. Thomas Mark Johnson, FRCS(C), MD performed more comprehensive eye exam, eye procedures, and SCODI of the posterior segment (SCODI-P) procedures for Medicare patients than 95% of providers in related specialties within District of Columbia.

Top 25%

By Volume:

diagnostic B-scan

intravitreal drug injection

By Affordability:

fundus photography

In 2012, among providers in related specialties within District of Columbia, Dr. Thomas Mark Johnson, FRCS(C), MD performed more diagnostic B-scan, and intravitreal drug injection procedures for Medicare patients than 75% of them and he also had a list price for fundus photography 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. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2012 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic evaluation	52
diagnostic imaging	61
doctor visit	407
eye procedures	8612
injections	1646
photocoagulation	59
ultrasound (sonogram)	61

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2013 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic evaluation	55
diagnostic imaging	76
doctor visit	326
eye procedures	8884
injections	1570
photocoagulation	48
ultrasound (sonogram)	76

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	551
Female	856

**Ethnicity**
Non-Hispanic White	1199
Black	108
Hispanic	33
Asian	49
Other	18
Native American	0

**Age**
From 65 to 74	487
From 75 to 84	475
85 and over	389
Less than 65	56

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2013

Hypertension	66
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	33
Depression	14
Chronic Kidney Disease	22
Asthma	5
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	35
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2014 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic evaluation	39
diagnostic imaging	88
doctor visit	249
eye procedures	8559
injections	1468
photocoagulation	18
ultrasound (sonogram)	88

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	531
Female	858

**Ethnicity**
Non-Hispanic White	1166
Black	116
Hispanic	35
Asian	50
Other	22
Native American	0

**Age**
From 65 to 74	487
From 75 to 84	490
85 and over	369
Less than 65	43

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2014

Hypertension	68
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	31
Depression	14
Chronic Kidney Disease	21
Asthma	5
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	34
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2015 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic evaluation	50
diagnostic imaging	94
doctor visit	319
eye procedures	8934
injections	1513
photocoagulation	13
prophylaxis (preventive treatment)	13
ultrasound (sonogram)	94

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	1176
Female	1896

**Ethnicity**
Non-Hispanic White	2546
Black	268
Hispanic	90
Asian	112
Other	0
Native American	0

**Age**
From 65 to 74	1086
From 75 to 84	1080
85 and over	800
Less than 65	106

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2015

Hypertension	69
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	32
Depression	15
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	35
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2016 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic evaluation	64
diagnostic imaging	101
doctor visit	252
eye procedures	9231
injections	1578
ultrasound (sonogram)	101

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	615
Female	958

**Ethnicity**
Non-Hispanic White	1301
Black	131
Hispanic	46
Asian	60
Other	35
Native American	0

**Age**
From 65 to 74	577
From 75 to 84	540
85 and over	407
Less than 65	49

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2016

Hypertension	67
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	34
Depression	14
Chronic Kidney Disease	28
Asthma	12
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	9
Diabetes	36
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2017 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	65
doctor visit	285
eye procedures	9586
injections	1577
photocoagulation	13
ultrasound (sonogram)	65

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	640
Female	986

**Ethnicity**
Non-Hispanic White	1318
Black	148
Hispanic	51
Asian	63
Other	0
Native American	0

**Age**
From 65 to 74	593
From 75 to 84	551
85 and over	411
Less than 65	71

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2017

Hypertension	71
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	33
Depression	16
Chronic Kidney Disease	31
Asthma	7
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	37
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2018 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	132
doctor visit	357
eye procedures	10423
injections	1713
ultrasound (sonogram)	132

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	679
Female	1025

**Ethnicity**
Non-Hispanic White	1370
Black	158
Hispanic	50
Asian	72
Other	54
Native American	0

**Age**
From 65 to 74	625
From 75 to 84	585
85 and over	419
Less than 65	75

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2018

Hypertension	69
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	34
Depression	16
Chronic Kidney Disease	30
Asthma	7
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	36
Dementia	12
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2019 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	131
doctor visit	381
eye procedures	10770
injections	1663
ultrasound (sonogram)	131

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	733
Female	1080

**Ethnicity**
Non-Hispanic White	1453
Black	164
Hispanic	56
Asian	69
Other	71
Native American	0

**Age**
From 65 to 74	677
From 75 to 84	631
85 and over	431
Less than 65	74

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2019

Hypertension	69
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	34
Depression	17
Chronic Kidney Disease	31
Asthma	7
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	37
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2020 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	93
doctor visit	308
eye procedures	8308
injections	1528
photocoagulation	14
ultrasound (sonogram)	93

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	626
Female	931

**Ethnicity**
Non-Hispanic White	1265
Black	123
Hispanic	55
Asian	61
Other	53
Native American	0

**Age**
From 65 to 74	566
From 75 to 84	570
85 and over	375
Less than 65	46

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2020

Hypertension	68
High Cholesterol	63
Stroke	5
Ischemic Heart Disease	34
Depression	16
Chronic Kidney Disease	33
Asthma	5
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	8
Diabetes	37
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2021 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	111
doctor visit	1780
eye procedures	7953
injections	1688
ultrasound (sonogram)	111

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	684
Female	1000

**Ethnicity**
Non-Hispanic White	1336
Black	139
Hispanic	62
Asian	83
Other	64
Native American	0

**Age**
From 65 to 74	616
From 75 to 84	598
85 and over	414
Less than 65	56

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2021

Hypertension	68
High Cholesterol	66
Stroke	6
Ischemic Heart Disease	35
Depression	16
Chronic Kidney Disease	33
Asthma	7
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	36
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2022 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	92
doctor visit	745
eye procedures	9154
injections	1833
ultrasound (sonogram)	92

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	687
Female	942

**Ethnicity**
Non-Hispanic White	1306
Black	116
Hispanic	61
Asian	79
Other	67
Native American	0

**Age**
From 65 to 74	568
From 75 to 84	631
85 and over	391
Less than 65	39

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	17
Atrial Fibrilation	18
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	35
Dementia	7
Cancer	17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC during 2023 were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

diagnostic imaging	59
doctor visit	203
eye procedures	9437
injections	1850
ultrasound (sonogram)	59

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Male	699
Female	995

**Ethnicity**
Non-Hispanic White	1350
Black	126
Hispanic	61
Asian	86
Other	71
Native American	0

**Age**
From 65 to 74	616
From 75 to 84	656
85 and over	384
Less than 65	38

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	17
Atrial Fibrilation	19
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	36
Dementia	6
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Thomas Mark Johnson, FRCS(C), MD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas Mark Johnson, FRCS(C), MD treated as a retina specialist in Washington, DC were eye procedures, injections, diagnostic imaging and ultrasound (sonogram).

diagnostic evaluation	52
diagnostic imaging	91
doctor visit	467
eye procedures	9154
injections	1635
photocoagulation	27
prophylaxis (preventive treatment)	13
ultrasound (sonogram)	91

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD.

**Gender**
Female	960
Male	635

**Ethnicity**
Black / African American	133
Asian / Pacific Islander	65
Non-Hispanic White	1300
Native American / Alaskan Native	0
Hispanic	50
Other	37

**Age**
75 to 84	567
85 and over	399
Less than 65	54
65 to 74	574

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Thomas Mark Johnson, FRCS(C), MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	63
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	29
Depression	13
Chronic Kidney Disease	24
Asthma	6
Osteoporosis	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	32
Atrial Fibrillation	12
Dementia	8
Cancer	12

Education & Training

He completed residency at University of Ottawa Affiliated Hospitals. He is certified by the American Board of Ophthalmology, Ophthalmology and has a state license in District of Columbia.

Residency: University of Ottawa Affiliated Hospitals (1999)

Board Certification: American Board of Ophthalmology, Ophthalmology

Licensed In: District of Columbia

Affiliations & Hospitals

Dr. Thomas Mark Johnson, FRCS(C), MD is associated with these hospitals and organizations:

MedStar Georgetown University Hospital

MedStar Washington Hospital Center

MedStar Health

Ratings & Reviews

Dr. Thomas Mark Johnson, FRCS(C), MD has an average of 2.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. Thomas Mark Johnson, FRCS(C), MD from all over the web to help you find the right in Washington, DC.

Overall Rating

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General Payments

These charts describe general payments received by Dr. Thomas Mark Johnson, FRCS(C), MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Genentech USA, Inc.	$667 LUCENTIS $379	VABYSMO $254	SUSVIMO $33
Allergan Inc.	$486 OZURDEX $465	BOTOX $20
Alcon Laboratories Inc	$390 Constellation $125	Ilevro $95	ReSTOR $39	Triescence $14	$117
Alimera Sciences, Inc.	$233 ILUVIEN $118	YUTIQ $24	$92
EyePoint Pharmaceuticals US, Inc.	$147 YUTIQ $108	DEXYCU $39
Other	$1,407 ACTHAR $186	OZURDEX $147	enVista MX60 IOL $123	Rhopressa $116	P200Tx $107	Other $729

**Types of Payments**
Food and Beverage	$3,038
Education	$170
Entertainment	$107
Travel and Lodging	$15

Research Payments

Dr. Thomas Mark Johnson, FRCS(C), MD has received 27 research payments totaling $593,802.

Biography

Dr. T. Johnson works as a vitreoretinal diseases (retina and vitreous). Dr. Johnson's clinical interests include conjunctivitis (pink eye), macular hole, and LASIK. He is affiliated with MedStar Georgetown University Hospital and MedStar Washington Hospital Center. He completed his residency training at a hospital affiliated with the University of Ottawa.

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Dr. Thomas Mark Johnson, FRCS(C), MD

Office Locations

Some issues Dr. Thomas Mark Johnson, FRCS(C), MD can help you with:

Noteworthy Medicare Patient Procedures Performed by Dr. Thomas Mark Johnson, FRCS(C), MD in 2023

By Volume:

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. Thomas Mark Johnson, FRCS(C), MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Mark Johnson, FRCS(C), MD From 2012 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Research Payments

Biography

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