Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > MD Providers > Internists & Internal Medicine Doctors

Dr. Thomas E. Maslen, MD

(5 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

University of Maryland School of Medicine (1997)

7525 Greenway Center Drive Suite 316
Greenbelt, MD 20770

(301) 220-0200

Dr. Thomas E. Maslen, MD is an internist in Greenbelt, MD specializing in internal medicine (adult medicine). He graduated from University of Maryland School of Medicine in 1997 and has 29 years of experience. Dr. Thomas E. Maslen, MD is affiliated with PRIVIA CARE CENTER LLC.

Office Locations

7525 Greenway Center Drive Suite 316
Greenbelt, MD 20770

(301) 220-0200

(301) 345-6956

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Thomas E. Maslen, MD in 2023

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

Top 5%

By Volume:

blood draw

phlebotomy for lab tests

In 2023, Dr. Thomas E. Maslen, MD performed more blood draw, and phlebotomy for lab tests procedures for Medicare patients than 95% of providers in related specialties within Maryland.

Top 25%

By Volume:

flu shot

preventive care

By Affordability:

blood draw

blood draw for lab tests

phlebotomy for lab tests

venipuncture

In 2012, among providers in related specialties within Maryland, Dr. Thomas E. Maslen, MD performed more flu shot, and preventive care procedures for Medicare patients than 75% of them and he also had a list price for blood draw, blood draw for lab tests, phlebotomy for lab tests, and venipuncture (phlebotomy) 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 E. Maslen, MD treated as an internist in Greenbelt, MD during 2012 were blood draw, preventive care, vaccines and nursing home care.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

aspiration	16
blood draw	708
doctor visit	1490
hospital care	39
injections	16
inpatient care	39
nursing home care	109
preventive care	242
vaccines	242

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2013 were blood draw, preventive care, vaccines and nursing home care.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

aspiration	16
blood draw	733
doctor visit	1561
injections	16
nursing home care	132
preventive care	278
vaccines	278

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	246
Female	355

**Ethnicity**
Non-Hispanic White	428
Black	143
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	241
From 75 to 84	182
85 and over	135
Less than 65	43

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2013

Hypertension	66
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	27
Depression	14
Chronic Kidney Disease	15
Asthma	5
Osteoperosis	6
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	6
Diabetes	47
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2014 were blood draw, preventive care, vaccines and nursing home care.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

blood draw	684
doctor visit	1556
nursing home care	138
preventive care	268
vaccines	268

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	260
Female	344

**Ethnicity**
Non-Hispanic White	428
Black	145
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	247
From 75 to 84	187
85 and over	127
Less than 65	43

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2014

Hypertension	67
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	16
Asthma	4
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	6
Diabetes	49
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2015 were blood draw, preventive care, vaccines and nursing home care.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

blood draw	656
doctor visit	1577
nursing home care	125
preventive care	500
vaccines	500

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	526
Female	732

**Ethnicity**
Non-Hispanic White	872
Black	324
Hispanic	0
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	536
From 75 to 84	402
85 and over	234
Less than 65	86

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2015

Hypertension	66
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	28
Depression	14
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	5
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	7
Diabetes	48
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2016 were blood draw, preventive care, vaccines and nursing home care.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

aspiration	13
blood draw	739
doctor visit	1617
injections	13
nursing home care	109
preventive care	444
vaccines	426

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	276
Female	385

**Ethnicity**
Non-Hispanic White	460
Black	167
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	277
From 75 to 84	227
85 and over	118
Less than 65	39

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2016

Hypertension	62
High Cholesterol	48
Stroke	4
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	21
Asthma	8
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	7
Diabetes	35
Dementia	12
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2017 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

blood draw	826
doctor visit	1609
preventive care	427
vaccines	388

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	282
Female	389

**Ethnicity**
Non-Hispanic White	463
Black	175
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	305
From 75 to 84	229
85 and over	99
Less than 65	38

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2017

Hypertension	61
High Cholesterol	47
Stroke	5
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	24
Asthma	4
Osteoperosis	6
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	5
Diabetes	30
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2018 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

blood draw	780
doctor visit	1612
preventive care	174
vaccines	138

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	287
Female	384

**Ethnicity**
Non-Hispanic White	446
Black	183
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	305
From 75 to 84	241
85 and over	85
Less than 65	40

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2018

Hypertension	59
High Cholesterol	45
Stroke	7
Ischemic Heart Disease	25
Depression	24
Chronic Kidney Disease	29
Asthma	4
Osteoperosis	5
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	7
Diabetes	29
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2019 were blood draw, preventive care, vaccines and aspiration.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

aspiration	15
blood draw	821
doctor visit	1605
injections	15
preventive care	119
vaccines	102

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	291
Female	399

**Ethnicity**
Non-Hispanic White	465
Black	177
Hispanic	0
Asian	0
Other	27
Native American	0

**Age**
From 65 to 74	310
From 75 to 84	260
85 and over	81
Less than 65	39

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2019

Hypertension	56
High Cholesterol	44
Stroke	4
Ischemic Heart Disease	24
Depression	25
Chronic Kidney Disease	32
Asthma	3
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	16
Chronic Obstructive Pulmonary Disease	6
Diabetes	28
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2020 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

blood draw	811
doctor visit	1597
preventive care	150
vaccines	110

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	316
Female	421

**Ethnicity**
Non-Hispanic White	481
Black	191
Hispanic	16
Asian	16
Other	33
Native American	0

**Age**
From 65 to 74	338
From 75 to 84	265
85 and over	96
Less than 65	38

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2020

Hypertension	52
High Cholesterol	42
Stroke	3
Ischemic Heart Disease	24
Depression	25
Chronic Kidney Disease	36
Asthma	3
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	15
Chronic Obstructive Pulmonary Disease	6
Diabetes	29
Dementia	9
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2021 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

blood draw	841
doctor visit	1604
preventive care	123
vaccines	86

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	313
Female	412

**Ethnicity**
Non-Hispanic White	462
Black	194
Hispanic	17
Asian	19
Other	33
Native American	0

**Age**
From 65 to 74	330
From 75 to 84	265
85 and over	94
Less than 65	36

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2021

Hypertension	58
High Cholesterol	42
Stroke	4
Ischemic Heart Disease	24
Depression	27
Chronic Kidney Disease	40
Asthma	3
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	13
Chronic Obstructive Pulmonary Disease	5
Diabetes	30
Dementia	12
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD during 2022 were blood draw, preventive care, vaccines and aspiration.

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

aspiration	21
blood draw	849
doctor visit	1640
injections	21
preventive care	66
vaccines	42

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	315
Female	397

**Ethnicity**
Non-Hispanic White	462
Black	183
Hispanic	16
Asian	14
Other	37
Native American	0

**Age**
From 65 to 74	312
From 75 to 84	278
85 and over	95
Less than 65	27

Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD in 2022

Hypertension	73
High Cholesterol	72
Stroke	8
Ischemic Heart Disease	17
Depression	24
Chronic Kidney Disease	33
Asthma	6
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	30
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Thomas E. Maslen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas E. Maslen, MD treated as an internist in Greenbelt, MD were blood draw, preventive care, vaccines and nursing home care.

aspiration	16
blood draw	768
doctor visit	1588
hospital care	39
injections	16
inpatient care	39
nursing home care	122
preventive care	253
vaccines	234

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Thomas E. Maslen, MD.

**Gender**
Male	282
Female	383

**Ethnicity**
Black / African American	171
Asian / Pacific Islander	4
Non-Hispanic White	451
Native American / Alaskan Native	0
Hispanic	6
Other	18

**Age**
75 to 84	230
85 and over	105
Less than 65	39
65 to 74	291

Average of Total of Conditions of Medicare patients treated by Dr. Thomas E. Maslen, MD From 2012 - 2022

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

Hypertension	56
High Cholesterol	45
Stroke	4
Ischemic Heart Disease	22
Depression	18
Chronic Kidney Disease	24
Asthma	4
Osteoporosis	5
Heart Failure	12
Chronic Obstructive Pulmonary Disease	5
Diabetes	32
Atrial Fibrillation	7
Dementia	9
Cancer	8

Education & Training

Dr. Thomas E. Maslen, MD graduated from University of Maryland School of Medicine in 1997. He has a state license in Maryland.

Medical School: University of Maryland School of Medicine (1997)

Licensed In: Maryland

Affiliations & Hospitals

Dr. Thomas E. Maslen, MD is associated with these hospitals and organizations:

PRIVIA CARE CENTER LLC

Ratings & Reviews

Dr. Thomas E. Maslen, MD has a high overall rating with an average of 4.4 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Thomas E. Maslen, MD from all over the web to help you find the right in Greenbelt, MD.

4.4

Overall Rating

(5 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Boston Scientific Corporation	$234 STENTS $184	ATHERECTOMY $21	Tachy System $18	PROMUS EVEROLIMUS-ELUTING CORONARY STENT SYSTEM $11
E.R. Squibb & Sons, L.L.C.	$195 ELIQUIS $195
Medtronic Vascular, Inc.	$188 STENTS $152	Implantable Cardioverter Defibrillators - ICDs $16	$20
AstraZeneca Pharmaceuticals LP	$113 FARXIGA $113
Janssen Pharmaceuticals, Inc	$74 INVOKANA $74
Other	$145 FLUZONE QUADRIVALENT $39	QULIPTA $28	FLUZONE $18	Pacemakers $16	FLUBLOK QUADRIVALENT $14	Other $29

**Types of Payments**
Food and Beverage	$875
Education	$74

Biography

Dr. Thomas Maslen is a graduate of the University of Maryland School of Medicine. Patients rated him highly, giving him an average of 4.5 stars (out of 5).