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Home > MD Providers > Ophthalmologists

Dr. Nicholas Robert Mahoney, MD

(Nicholas R Mahoney MD)

(No ratings)

Specializes in: Ophthalmology (Eye Disease)

6430 Rockledge Drive Building 6 Johns Hopkins Wilmer Eye Institute
Bethesda, MD 20817

(240) 482-1100

Dr. Nicholas Robert Mahoney, MD is an ophthalmologist in Bethesda, MD specializing in ophthalmology (eye disease). Dr. Nicholas Robert Mahoney, MD is affiliated with The Johns Hopkins Hospital.

Office Locations

6430 Rockledge Drive Building 6 Johns Hopkins Wilmer Eye Institute
Bethesda, MD 20817

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1800 Orleans Street Maumenee Lobby
Baltimore, MD 21287

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Noteworthy Medicare Patient Procedures Performed by Dr. Nicholas Robert Mahoney, MD in 2023

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

Top 10%

By Volume:

tear duct probing

In 2023, Dr. Nicholas Robert Mahoney, MD performed more tear duct probing procedures for Medicare patients than 90% of providers in related specialties within Maryland.

Top 25%

By Volume:

botulinum toxin injection for facial movement disorders

extraocular surgery

plastic surgery procedures

In 2012, Dr. Nicholas Robert Mahoney, MD performed more botulinum toxin injection for facial movement disorders, extraocular surgery, and plastic surgery procedures procedures for Medicare patients than 75% of providers in related specialties within Maryland.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2012 were eye procedures and lacrimal (tearing system) procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	206
eye procedures	44
lacrimal (tearing system) procedures	28

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2013 were eye procedures, lacrimal (tearing system) procedures and plastic surgery procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	415
eye procedures	159
lacrimal (tearing system) procedures	66
plastic surgery procedures	65

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	136
Female	203

**Ethnicity**
Non-Hispanic White	229
Black	61
Hispanic	0
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	112
85 and over	49
Less than 65	33

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2013

Hypertension	65
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	14
Asthma	8
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2014 were eye procedures, plastic surgery procedures and lacrimal (tearing system) procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	469
eye procedures	147
lacrimal (tearing system) procedures	60
plastic surgery procedures	107

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	146
Female	229

**Ethnicity**
Non-Hispanic White	248
Black	73
Hispanic	0
Asian	40
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	146
85 and over	40
Less than 65	39

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2014

Hypertension	61
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	33
Depression	16
Chronic Kidney Disease	14
Asthma	8
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2015 were eye procedures, lacrimal (tearing system) procedures and plastic surgery procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	610
eye procedures	80
lacrimal (tearing system) procedures	75
plastic surgery procedures	70

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	294
Female	544

**Ethnicity**
Non-Hispanic White	566
Black	142
Hispanic	28
Asian	72
Other	30
Native American	0

**Age**
From 65 to 74	362
From 75 to 84	284
85 and over	122
Less than 65	70

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2015

Hypertension	60
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	16
Asthma	12
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	26
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2016 were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	719
eye procedures	179
injections	23
lacrimal (tearing system) procedures	81
minimally invasive procedures	23
plastic surgery procedures	171
reconstructive surgery	14
tissue transfer	14
wound repair (e.g. stitches)	14

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	168
Female	351

**Ethnicity**
Non-Hispanic White	349
Black	89
Hispanic	15
Asian	46
Other	20
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	169
85 and over	61
Less than 65	39

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2016

Hypertension	59
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	27
Depression	17
Chronic Kidney Disease	19
Asthma	13
Osteoperosis	11
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	10
Diabetes	25
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2017 were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	703
eye procedures	173
injections	25
lacrimal (tearing system) procedures	92
minimally invasive procedures	25
plastic surgery procedures	128
reconstructive surgery	14
tissue transfer	14
wound repair (e.g. stitches)	14

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	171
Female	365

**Ethnicity**
Non-Hispanic White	365
Black	92
Hispanic	17
Asian	46
Other	16
Native American	0

**Age**
From 65 to 74	252
From 75 to 84	181
85 and over	76
Less than 65	27

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2017

Hypertension	67
High Cholesterol	46
Stroke	4
Ischemic Heart Disease	30
Depression	17
Chronic Kidney Disease	22
Asthma	7
Osteoperosis	12
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2018 were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and reconstructive surgery.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	516
eye procedures	212
lacrimal (tearing system) procedures	58
plastic surgery procedures	141
reconstructive surgery	12
tissue transfer	12
wound repair (e.g. stitches)	12

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	162
Female	280

**Ethnicity**
Non-Hispanic White	294
Black	82
Hispanic	20
Asian	24
Other	22
Native American	0

**Age**
From 65 to 74	209
From 75 to 84	140
85 and over	61
Less than 65	32

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2018

Hypertension	66
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	32
Depression	23
Chronic Kidney Disease	22
Asthma	10
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	24
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2019 were eye procedures, plastic surgery procedures and lacrimal (tearing system) procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	432
eye procedures	310
lacrimal (tearing system) procedures	56
plastic surgery procedures	109

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	154
Female	289

**Ethnicity**
Non-Hispanic White	322
Black	51
Hispanic	18
Asian	29
Other	23
Native American	0

**Age**
From 65 to 74	194
From 75 to 84	164
85 and over	54
Less than 65	31

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2019

Hypertension	62
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	29
Depression	22
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	14
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2020 were eye procedures, plastic surgery procedures and lacrimal (tearing system) procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	400
eye procedures	141
lacrimal (tearing system) procedures	59
plastic surgery procedures	72

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	130
Female	269

**Ethnicity**
Non-Hispanic White	285
Black	58
Hispanic	16
Asian	23
Other	17
Native American	0

**Age**
From 65 to 74	155
From 75 to 84	165
85 and over	52
Less than 65	27

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2020

Hypertension	60
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	29
Depression	23
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	15
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2021 were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	645
eye procedures	159
injections	35
lacrimal (tearing system) procedures	49
minimally invasive procedures	35
plastic surgery procedures	137
reconstructive surgery	11
tissue transfer	11
wound repair (e.g. stitches)	11

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	187
Female	349

**Ethnicity**
Non-Hispanic White	376
Black	78
Hispanic	19
Asian	37
Other	26
Native American	0

**Age**
From 65 to 74	227
From 75 to 84	199
85 and over	75
Less than 65	35

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2021

Hypertension	59
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	22
Asthma	7
Osteoperosis	14
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	7
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2022 were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	625
eye procedures	185
injections	39
lacrimal (tearing system) procedures	48
minimally invasive procedures	39
plastic surgery procedures	124

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	198
Female	368

**Ethnicity**
Non-Hispanic White	383
Black	90
Hispanic	25
Asian	38
Other	30
Native American	0

**Age**
From 65 to 74	244
From 75 to 84	218
85 and over	68
Less than 65	36

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	22
Depression	18
Chronic Kidney Disease	17
Asthma	12
Osteoperosis	22
Atrial Fibrilation	15
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	4
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD during 2023 were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

doctor visit	626
eye procedures	234
injections	46
lacrimal (tearing system) procedures	64
minimally invasive procedures	46
plastic surgery procedures	135

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	198
Female	391

**Ethnicity**
Non-Hispanic White	404
Black	87
Hispanic	23
Asian	34
Other	41
Native American	0

**Age**
From 65 to 74	241
From 75 to 84	239
85 and over	71
Less than 65	38

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2023

Hypertension	70
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	24
Depression	18
Chronic Kidney Disease	17
Asthma	12
Osteoperosis	24
Atrial Fibrilation	14
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Dementia	4
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Nicholas Robert Mahoney, MD for Medicare patients.

The highest averages for the top procedures that Dr. Nicholas Robert Mahoney, MD treated as an ophthalmologist in Bethesda, MD were eye procedures, plastic surgery procedures, lacrimal (tearing system) procedures and minimally invasive procedures.

doctor visit	530
eye procedures	168
injections	33
lacrimal (tearing system) procedures	61
minimally invasive procedures	33
plastic surgery procedures	114
reconstructive surgery	12
tissue transfer	12
wound repair (e.g. stitches)	12

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Nicholas Robert Mahoney, MD.

**Gender**
Male	162
Female	303

**Ethnicity**
Black / African American	75
Asian / Pacific Islander	34
Non-Hispanic White	318
Hispanic	15
Native American / Alaskan Native	0
Other	18

**Age**
75 to 84	168
85 and over	60
Less than 65	33
65 to 74	202

Average of Total of Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD From 2012 - 2023

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

Hypertension	58
High Cholesterol	54
Stroke	5
Ischemic Heart Disease	25
Depression	17
Chronic Kidney Disease	17
Asthma	8
Osteoporosis	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Atrial Fibrillation	9
Cancer	11
Dementia	6

Education & Training

He has a state license in Maryland.

Licensed In: Maryland

Affiliations & Hospitals

Dr. Nicholas Robert Mahoney, MD is associated with these hospitals and organizations:

The Johns Hopkins Hospital

Ratings & Reviews

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General Payments

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

**Payments by Company**
Synthes GmbH	$15,056 $15,056
Horizon Therapeutics plc	$3,571 TEPEZZA $3,506	$65
Kaneka Pharma America LLC	$1,480 Lacriflow $1,480
Allergan Inc.	$350 $350
Stryker Corporation	$114 MAXFACE $114
Other	$263 Distraction & Tissue Molding $107	EYLEA (aflibercept) Injection $42	TRUMATCH $42	Oxervate $21	XIIDRA $18	Other $34

**Types of Payments**
Compensation for serving as faculty or as a speaker for an accredited or certified continuing education program	$7,000
Travel and Lodging	$5,392
Honoraria	$3,445
Compensation for serving as faculty or as a speaker for a medical education program	$2,000
Gift	$1,480
Other	$1,518

Biography

Dr. Nicholas Mahoney's specialty is ophthalmology (eye disease). Dr. Mahoney studied medicine at the University of Pennsylvania School of Medicine. His professional affiliations include Johns Hopkins University and Johns Hopkins Hospital.

Select Year:

Dr. Nicholas Robert Mahoney, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Nicholas Robert Mahoney, MD in 2023

By Volume:

By Volume:

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. Nicholas Robert Mahoney, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Robert Mahoney, 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. Nicholas Robert Mahoney, MD From 2012 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Bethesda, MD