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Dr. Mark H. Flasar, MD

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Specializes in: Adult Gastroenterology

University of Maryland School of Medicine

820 Bestgate Road Suite 1a
Annapolis, MD 21401

(410) 224-2116

Dr. Mark H. Flasar, MD is a gastroenterologist in Annapolis, MD specializing in adult gastroenterology. He graduated from University of Maryland School of Medicine. Dr. Mark H. Flasar, MD is affiliated with Luminis Health.

Office Locations

Luminis Health

820 Bestgate Road Suite 1a
Annapolis, MD 21401

(410) 224-2116

(410) 224-2118

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark H. Flasar, MD in 2023

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

Top 10%

By Volume:

colonoscopy

colonoscopy with biopsy

colonoscopy with lesion removal

gastrointestinal biopsy

gastrointestinal procedures

minimally invasive procedures

removal of lesion

By Affordability:

EGD with biopsy

esophagogastroduodenoscopy

therapeutic upper endoscopy

upper endoscopy with biopsy

In 2023, among providers in related specialties within Maryland, Dr. Mark H. Flasar, MD performed more colonoscopy, colonoscopy with biopsy, colonoscopy with lesion removal, gastrointestinal biopsy, gastrointestinal procedures, minimally invasive procedures, and removal of lesion (e.g. growth) procedures for Medicare patients than 90% of them and he also had a list price for EGD with biopsy, esophagogastroduodenoscopy (EGD), therapeutic upper endoscopy, and upper endoscopy with biopsy that was lower than the list prices billed to Medicare by 90% 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.

Top 25%

By Volume:

EGD with biopsy

EGD with lesion removal

preventive care

screening colonoscopy

By Affordability:

diagnostic EGD

diagnostic EGD without biopsy

diagnostic upper endoscopy

EGD with lesion removal

therapeutic EGD

upper endoscopy

upper endoscopy with lesion removal

In 2012, among providers in related specialties within Maryland, Dr. Mark H. Flasar, MD performed more EGD with biopsy, EGD with lesion removal, preventive care, and screening colonoscopy procedures for Medicare patients than 75% of them and he also had a list price for diagnostic EGD, diagnostic EGD without biopsy, diagnostic upper endoscopy, EGD with lesion removal, therapeutic EGD, upper endoscopy, and upper endoscopy with lesion removal 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 H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2012 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

doctor visit	65
gastrointestinal procedures	12
hospital care	88
inpatient care	88
minimally invasive procedures	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2013 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	27
doctor visit	75
gastrointestinal procedures	39
hospital care	127
inpatient care	127
minimally invasive procedures	39
removal of lesion (e.g. growth)	27

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	65
Female	87

**Ethnicity**
Non-Hispanic White	92
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	39
From 75 to 84	0
85 and over	0
Less than 65	74

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2013

Hypertension	75
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	53
Depression	38
Chronic Kidney Disease	55
Asthma	18
Osteoperosis	7
Atrial Fibrilation	22
Heart Failure	38
Chronic Obstructive Pulmonary Disease	27
Diabetes	41
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2014 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

doctor visit	61
gastrointestinal procedures	12
hospital care	44
inpatient care	44
minimally invasive procedures	12

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	38
Female	54

**Ethnicity**
Non-Hispanic White	56
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	0
85 and over	0
Less than 65	45

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2014

Hypertension	65
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	38
Depression	41
Chronic Kidney Disease	48
Asthma	16
Osteoperosis	16
Atrial Fibrilation	0
Heart Failure	29
Chronic Obstructive Pulmonary Disease	26
Diabetes	33
Dementia	16
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2015 were hospital care, inpatient care, removal of lesion (e.g. growth) and minimally invasive procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	30
doctor visit	86
gastrointestinal procedures	30
hospital care	94
inpatient care	94
minimally invasive procedures	30
removal of lesion (e.g. growth)	30

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	152
Female	200

**Ethnicity**
Non-Hispanic White	220
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	72
85 and over	22
Less than 65	120

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2015

Hypertension	73
High Cholesterol	57
Stroke	12
Ischemic Heart Disease	39
Depression	31
Chronic Kidney Disease	40
Asthma	23
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	32
Chronic Obstructive Pulmonary Disease	27
Diabetes	43
Dementia	11
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2016 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	130
doctor visit	274
gastrointestinal procedures	165
hospital care	182
inpatient care	182
minimally invasive procedures	165
preventive care	35
removal of lesion (e.g. growth)	130

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	147
Female	209

**Ethnicity**
Non-Hispanic White	289
Black	54
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	163
From 75 to 84	87
85 and over	54
Less than 65	52

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2016

Hypertension	75
High Cholesterol	61
Stroke	10
Ischemic Heart Disease	40
Depression	31
Chronic Kidney Disease	39
Asthma	22
Osteoperosis	9
Atrial Fibrilation	22
Heart Failure	25
Chronic Obstructive Pulmonary Disease	17
Diabetes	34
Dementia	13
Cancer	21

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	226
doctor visit	446
gastrointestinal procedures	271
hospital care	149
inpatient care	149
minimally invasive procedures	271
preventive care	29
removal of lesion (e.g. growth)	226

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	195
Female	276

**Ethnicity**
Non-Hispanic White	392
Black	62
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	218
From 75 to 84	150
85 and over	57
Less than 65	46

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2017

Hypertension	73
High Cholesterol	54
Stroke	8
Ischemic Heart Disease	37
Depression	29
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	20
Chronic Obstructive Pulmonary Disease	18
Diabetes	30
Dementia	13
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	269
doctor visit	447
gastrointestinal procedures	326
hospital care	191
inpatient care	191
minimally invasive procedures	326
preventive care	57
removal of lesion (e.g. growth)	269

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	239
Female	312

**Ethnicity**
Non-Hispanic White	450
Black	74
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	156
85 and over	73
Less than 65	65

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2018

Hypertension	70
High Cholesterol	60
Stroke	7
Ischemic Heart Disease	35
Depression	31
Chronic Kidney Disease	31
Asthma	9
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	18
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	16
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2019 were gastrointestinal procedures, minimally invasive procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	414
doctor visit	700
gastrointestinal procedures	534
hospital care	164
inpatient care	164
manometry	12
minimally invasive procedures	533
preventive care	80
removal of lesion (e.g. growth)	414

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	397
Female	443

**Ethnicity**
Non-Hispanic White	694
Black	100
Hispanic	0
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	429
From 75 to 84	273
85 and over	80
Less than 65	58

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2019

Hypertension	70
High Cholesterol	63
Stroke	5
Ischemic Heart Disease	35
Depression	28
Chronic Kidney Disease	32
Asthma	7
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	26
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2020 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

diagnostic procedures	386
doctor visit	598
gastrointestinal procedures	473
hospital care	62
inpatient care	62
minimally invasive procedures	486
preventive care	67
removal of lesion (e.g. growth)	386

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	371
Female	328

**Ethnicity**
Non-Hispanic White	588
Black	77
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	351
From 75 to 84	229
85 and over	62
Less than 65	57

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2020

Hypertension	68
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	33
Depression	24
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	10
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

biological response modifier (BRM) therapy	71
chemotherapy	71
diagnostic procedures	487
doctor visit	660
gastrointestinal procedures	594
hospital care	71
inpatient care	71
minimally invasive procedures	676
preventive care	88
removal of lesion (e.g. growth)	487

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	376
Female	386

**Ethnicity**
Non-Hispanic White	645
Black	78
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	388
From 75 to 84	277
85 and over	52
Less than 65	45

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2021

Hypertension	65
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	28
Asthma	6
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	24
Dementia	8
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

biological response modifier (BRM) therapy	53
chemotherapy	53
diagnostic procedures	415
doctor visit	564
gastrointestinal procedures	539
hospital care	34
inpatient care	34
minimally invasive procedures	592
preventive care	103
removal of lesion (e.g. growth)	415

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	379
Female	418

**Ethnicity**
Non-Hispanic White	682
Black	71
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	396
From 75 to 84	277
85 and over	66
Less than 65	58

Conditions of Medicare patients treated by Dr. Mark H. Flasar, MD in 2022

Hypertension	72
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	23
Depression	19
Chronic Kidney Disease	17
Asthma	9
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	21
Dementia	4
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark H. Flasar, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark H. Flasar, MD treated as a gastroenterologist in Annapolis, MD were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

biological response modifier (BRM) therapy	62
chemotherapy	62
diagnostic procedures	264
doctor visit	361
gastrointestinal procedures	272
hospital care	109
inpatient care	109
manometry	12
minimally invasive procedures	285
preventive care	65
removal of lesion (e.g. growth)	264

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark H. Flasar, MD.

**Gender**
Male	214
Female	246

**Ethnicity**
Black / African American	46
Asian / Pacific Islander	0
Non-Hispanic White	373
Native American / Alaskan Native	0
Hispanic	0
Other	4

**Age**
75 to 84	138
85 and over	42
Less than 65	56
65 to 74	219

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

The highest averages of the most common conditions of Medicare patients that Dr. Mark H. Flasar, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	64
High Cholesterol	53
Stroke	5
Ischemic Heart Disease	33
Depression	26
Chronic Kidney Disease	32
Asthma	11
Osteoporosis	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	16
Diabetes	28
Atrial Fibrillation	13
Cancer	12
Dementia	9

Education & Training

Dr. Mark H. Flasar, MD graduated from University of Maryland School of Medicine. He completed residency at Duke University Medical Center. He is certified by the American Board of Internal Medicine and has a state license in Maryland.

Medical School: University of Maryland School of Medicine

Residency: Duke University Medical Center

Board Certification: American Board of Internal Medicine

Licensed In: Maryland

Affiliations & Hospitals

Dr. Mark H. Flasar, MD is associated with these hospitals and organizations:

Luminis Health

Ratings & Reviews

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General Payments

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

**Payments by Company**
AbbVie Inc.	$60,236 Skyrizi $26,188	Rinvoq $24,003	Humira $7,378	Creon $178	LINZESS $113	Other $2,376
AbbVie, Inc.	$55,450 Humira $14,097	Lupron $5,356	Creon $49	$35,949
Takeda Pharmaceuticals U.S.A., Inc.	$20,656 ENTYVIO $20,536	GATTEX $67	AMITIZA $53
Takeda Pharmaceuticals America, Inc.	$11,079 ENTYVIO $11,058	AMITIZA $13	Dexilant $8
Janssen Biotech, Inc.	$3,734 SIMPONI $3,197	STELARA $508	REMICADE $28	SIMPONI ARIA $0
Other	$4,066 XIFAXAN $331	XELJANZ $287	ZEPOSIA $286	Cimzia $262	Ocaliva $253	Other $2,648

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$114,031
Travel and Lodging	$14,518
Consulting Fee	$13,600
Food and Beverage	$12,965
Education	$106

Research Payments

Dr. Mark H. Flasar, MD has received 48 research payments totaling $191,674.

Biography

Dr. Mark Flasar's specialty is adult gastroenterology. He attended the University of Maryland School of Medicine and then went on to complete his residency at Duke University Medical Center. Dr. Flasar is professionally affiliated with Luminis Health.