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Dr. Mark S. Gloger, MD, AGAF

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(Dr. Mark Steven Gloger, M.D.)

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Specializes in: Adult Gastroenterology

Georgetown University School of Medicine

Professional interests include: gastrointestinal problems (digestive disorders), esophagus problems, inflammatory bowel disease

9711 Medical Center Drive Suite 308
Rockville, MD 20904

(301) 251-1244

Dr. Mark S. Gloger, MD, AGAF is a gastroenterologist in Rockville, MD specializing in adult gastroenterology. He graduated from Georgetown University School of Medicine. Dr. Mark S. Gloger, MD, AGAF is affiliated with Holy Cross Health, Holy Cross Hospital, Frederick Health, Capital Digestive Care, Shady Grove Medical Center and Frederick Memorial Hospital.

Office Locations

15005 Shady Grove Road Suite 200
Rockville, MD 20850

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3280 Urbana Pike Suite 101
Ijamsville, MD 21754

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Frederick Health

56 Thomas Johnson Drive Suite 110
Frederick, MD 21702

(301) 810-5252

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9711 Medical Center Drive Suite 308
Rockville, MD 20850

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Holy Cross Health

9711 Medical Center Drive Suite 308
Rockville, MD 20904

(301) 251-1244

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Some issues Dr. Mark S. Gloger, MD, AGAF can help you with:

Gastrointestinal Problems (Digestive Disorders)

The gastrointestinal system, or GI tract, is the name given to a collection of organs that work together to digest food. These organs fit together in a long tube, running from the mouth to the anus, and include the esophagus, stomach, and intestines, among others. With so many parts working together, complicated by today's busy lifestyles and diets, digestive problems are common. As many as 1 in 3 Americans have a digestive or GI disorder. There are a huge variety of digestive problems, but the most common are IBS, constipation, GERD, hemorrhoids, and ulcers.

IBS, or irritable bowel syndrome, happens when the muscles surrounding the colon contract too easily or frequently. The result is abdominal pain, cramps, diarrhea or constipation, gas and bloating. IBS attacks can often be brought on by specific triggers, so a key part of treatment is learning which foods trigger IBS attacks and avoiding them. Treatment also includes exercise, avoiding stress, and medications if needed.

Constipation, or large, hard, or infrequent stools, happens to everyone at some point. It can be caused by a disruption in routine or food, or by eating a diet without many fresh fruits and vegetables. Although it is uncomfortable, constipation is common and usually not serious, but it can sometimes become chronic. Adding fiber to the diet, exercising, and taking medications may help.

GERD, or gastroesophageal reflux disease, is a severe form of chronic heartburn where stomach acid spills back up into the esophagus. Left untreated, the acid may even eat away at the esophagus and cause serious damage. Treatment includes changing the diet to avoid trigger foods, losing weight if needed, medications, or even surgery.

Hemorrhoids are blood vessels around the rectum that become irritated, swollen or torn while straining during a bowel movement. They are most often caused by constipation, but can also be caused by pregnancy, diarrhea, or simply a genetic predisposition towards hemorrhoids. Treatment involves first treating any constipation issues, then keeping the area clean and soothed until it has healed. If these measures are ineffective, surgery is sometimes used.

Peptic ulcers are sores or spots of inflammation in the lining of the stomach or close to the stomach in the small intestine. Usually this area is coated with a protective lining that shields the tissue from the strong stomach acid, but a break in the lining can let acid in, causing the sores. It used to be thought that stress caused ulcers, but now it is known that is not the case. Most often, they are caused by an infection by H. pylori bacteria, but ulcers can also be caused by alcohol abuse or overuse of aspirin, ibuprofen, naproxen, or other NSAIDS. The symptoms of an ulcer are pain, hunger, nausea, and fatigue.

Gastrointestinal problems, perhaps more than any other area, are markedly affected by lifestyle. Many disorders can be prevented or treated at least in part by eating a healthy diet high in fiber, exercising regularly, drinking enough water, and limiting alcohol intake. Still, the frequency of digestive disorders means that even the healthiest person can be affected by them. Anyone who notices blood in their stool, experiences abdominal pain, unexplained weight loss, or any significant change in bowel movements should see a doctor.

Noteworthy Medicare Patient Procedures Performed by Dr. Mark S. Gloger, MD, AGAF in 2023

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

Top 5%

By Volume:

EGD with biopsy

EGD with lesion removal

gastrointestinal biopsy

removal of lesion

In 2023, Dr. Mark S. Gloger, MD, AGAF performed more EGD with biopsy, EGD with lesion removal, gastrointestinal biopsy, and removal of lesion (e.g. growth) procedures for Medicare patients than 95% of providers in related specialties within Maryland.

Top 10%

By Volume:

colonoscopy with biopsy

colonoscopy with lesion removal

In 2023, Dr. Mark S. Gloger, MD, AGAF performed more colonoscopy with biopsy, and colonoscopy with lesion removal procedures for Medicare patients than 90% of providers in related specialties within Maryland.

Top 25%

By Volume:

colonoscopy

endoscopy

gastrointestinal procedures

In 2012, Dr. Mark S. Gloger, MD, AGAF performed more colonoscopy, endoscopy, and gastrointestinal 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. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, MD during 2012 were gastrointestinal procedures, minimally invasive procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	304
doctor visit	280
gastrointestinal procedures	413
hospital care	45
inpatient care	45
minimally invasive procedures	401
preventive care	70
removal of lesion (e.g. growth)	304

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, MD during 2013 were gastrointestinal procedures, minimally invasive procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	364
doctor visit	382
gastrointestinal procedures	499
hospital care	17
inpatient care	17
minimally invasive procedures	488
preventive care	65
removal of lesion (e.g. growth)	364

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	206
Female	286

**Ethnicity**
Non-Hispanic White	408
Black	31
Hispanic	0
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	254
From 75 to 84	159
85 and over	49
Less than 65	30

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2013

Hypertension	64
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	36
Depression	17
Chronic Kidney Disease	15
Asthma	6
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	27
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, MD during 2014 were gastrointestinal procedures, minimally invasive procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	320
doctor visit	505
gastrointestinal procedures	441
hospital care	47
inpatient care	47
minimally invasive procedures	414
preventive care	45
removal of lesion (e.g. growth)	320

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	230
Female	315

**Ethnicity**
Non-Hispanic White	439
Black	39
Hispanic	22
Asian	31
Other	14
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	167
85 and over	51
Less than 65	47

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2014

Hypertension	60
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	31
Depression	17
Chronic Kidney Disease	15
Asthma	7
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	6
Diabetes	28
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, MD during 2015 were gastrointestinal procedures, minimally invasive procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	327
doctor visit	470
gastrointestinal procedures	434
hospital care	32
inpatient care	32
minimally invasive procedures	408
preventive care	43
removal of lesion (e.g. growth)	327

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	408
Female	590

**Ethnicity**
Non-Hispanic White	808
Black	70
Hispanic	36
Asian	58
Other	26
Native American	0

**Age**
From 65 to 74	554
From 75 to 84	276
85 and over	76
Less than 65	92

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2015

Hypertension	64
High Cholesterol	56
Stroke	3
Ischemic Heart Disease	30
Depression	19
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	29
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, MD during 2016 were gastrointestinal procedures, minimally invasive procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	369
doctor visit	299
gastrointestinal procedures	448
minimally invasive procedures	429
preventive care	44
removal of lesion (e.g. growth)	369

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	149
Female	239

**Ethnicity**
Non-Hispanic White	303
Black	26
Hispanic	11
Asian	31
Other	17
Native American	0

**Age**
From 65 to 74	210
From 75 to 84	112
85 and over	32
Less than 65	34

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2016

Hypertension	60
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	30
Depression	19
Chronic Kidney Disease	18
Asthma	12
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

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

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	431
doctor visit	350
gastrointestinal procedures	524
minimally invasive procedures	500
preventive care	45
removal of lesion (e.g. growth)	431

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	184
Female	230

**Ethnicity**
Non-Hispanic White	315
Black	34
Hispanic	15
Asian	35
Other	15
Native American	0

**Age**
From 65 to 74	213
From 75 to 84	139
85 and over	27
Less than 65	35

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2017

Hypertension	65
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	39
Depression	23
Chronic Kidney Disease	23
Asthma	12
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	30
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

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

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	343
doctor visit	355
gastrointestinal procedures	415
lab tests	17
minimally invasive procedures	404
preventive care	27
removal of lesion (e.g. growth)	343

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	181
Female	215

**Ethnicity**
Non-Hispanic White	308
Black	23
Hispanic	14
Asian	29
Other	22
Native American	0

**Age**
From 65 to 74	209
From 75 to 84	125
85 and over	37
Less than 65	25

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2018

Hypertension	64
High Cholesterol	63
Stroke	3
Ischemic Heart Disease	34
Depression	17
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	14
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, 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 S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	447
doctor visit	349
gastrointestinal procedures	540
lab tests	27
minimally invasive procedures	522
preventive care	46
removal of lesion (e.g. growth)	447

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	188
Female	248

**Ethnicity**
Non-Hispanic White	351
Black	29
Hispanic	0
Asian	28
Other	0
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	137
85 and over	31
Less than 65	28

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2019

Hypertension	67
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	33
Depression	20
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	14
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	6
Diabetes	25
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark S. Gloger, MD, AGAF treated as a gastroenterologist in Rockville, 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 S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	261
doctor visit	237
gastrointestinal procedures	289
minimally invasive procedures	289
preventive care	28
removal of lesion (e.g. growth)	261

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	125
Female	171

**Ethnicity**
Non-Hispanic White	228
Black	23
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	153
From 75 to 84	105
85 and over	22
Less than 65	16

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2020

Hypertension	60
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	31
Depression	16
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	15
Atrial Fibrilation	8
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	24
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

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

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	407
doctor visit	301
esophageal dilation	12
gastrointestinal procedures	466
minimally invasive procedures	452
preventive care	33
removal of lesion (e.g. growth)	407

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	175
Female	215

**Ethnicity**
Non-Hispanic White	300
Black	25
Hispanic	14
Asian	28
Other	23
Native American	0

**Age**
From 65 to 74	221
From 75 to 84	124
85 and over	26
Less than 65	19

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2021

Hypertension	63
High Cholesterol	67
Stroke	4
Ischemic Heart Disease	31
Depression	17
Chronic Kidney Disease	20
Asthma	7
Osteoperosis	14
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	5
Diabetes	21
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

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

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

diagnostic procedures	420
doctor visit	305
gastrointestinal procedures	467
minimally invasive procedures	452
preventive care	32
removal of lesion (e.g. growth)	420

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	179
Female	233

**Ethnicity**
Non-Hispanic White	315
Black	20
Hispanic	13
Asian	37
Other	27
Native American	0

**Age**
From 65 to 74	226
From 75 to 84	140
85 and over	24
Less than 65	22

Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF in 2022

Hypertension	72
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	13
Asthma	10
Osteoperosis	18
Atrial Fibrilation	14
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	21
Dementia	3
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark S. Gloger, MD, AGAF for Medicare patients.

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

diagnostic procedures	363
doctor visit	348
esophageal dilation	12
gastrointestinal procedures	448
hospital care	35
inpatient care	35
lab tests	22
minimally invasive procedures	432
preventive care	43
removal of lesion (e.g. growth)	363

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF.

**Gender**
Male	184
Female	249

**Ethnicity**
Black / African American	29
Asian / Pacific Islander	27
Non-Hispanic White	343
Native American / Alaskan Native	0
Hispanic	11
Other	14

**Age**
75 to 84	134
85 and over	34
Less than 65	31
65 to 74	232

Average of Total of Conditions of Medicare patients treated by Dr. Mark S. Gloger, MD, AGAF From 2012 - 2022

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

Hypertension	58
High Cholesterol	55
Stroke	3
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	17
Asthma	8
Osteoporosis	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	23
Atrial Fibrillation	8
Dementia	6
Cancer	11

Education & Training

Dr. Mark S. Gloger, MD, AGAF graduated from Georgetown University School of Medicine. He completed residency at Albert Einstein College of Medicine Affiliated Hospitals. He is certified by the Gastroenterology, American Board of Internal Medicine Subspecialty Gastroenterology and has a state license in Maryland.

Medical School: Georgetown University School of Medicine

Residency: Albert Einstein College of Medicine Affiliated Hospitals (1990)

Board Certification: Gastroenterology, American Board of Internal Medicine Subspecialty Gastroenterology (1993)

Licensed In: Maryland

Affiliations & Hospitals

Dr. Mark S. Gloger, MD, AGAF is associated with these hospitals and organizations:

Holy Cross Health

Holy Cross Hospital

Frederick Health

Capital Digestive Care

Shady Grove Medical Center

Frederick Memorial Hospital

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General Payments

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

**Payments by Company**
AbbVie, Inc.	$964 Creon $413	Humira $338	Viekira $86	Moderiba $58	Mavyret $39	Other $30
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$755 XIFAXAN $334	Trulance $274	PLENVU $64	APRISO $56	XIFAXANIBSD $15	Other $14
AbbVie Inc.	$562 LINZESS $192	Creon $100	Humira $97	Skyrizi $75	Rinvoq $65	Other $34
Janssen Biotech, Inc.	$460 SIMPONI $245	STELARA $162	SIMPONI ARIA $30	REMICADE $24
Salix Pharmaceuticals, Ltd	$409 Relistor $213	Uceris $111	XIFAXAN 550 MG TABLETS $46	Zegerid $24	Xifaxan 550 mg $15
Other	$3,667 LINZESS $298	ENTYVIO $172	XELJANZ $170	Cimzia $122	ZEPOSIA $114	Other $2,791

**Types of Payments**
Food and Beverage	$6,579
Education	$237

Biography

Dr. Mark Gloger practices adult gastroenterology in Rockville, MD, Ijamsville, MD, and Frederick, MD. Clinical interests for Dr. Gloger include inflammatory bowel disease, internal medicine, and esophagus problems. Before completing his residency at a hospital affiliated with Albert Einstein College of Medicine, Dr. Gloger attended medical school at Georgetown University School of Medicine. Awards and/or distinctions Dr. Gloger has received include Top Doctors Washingtonian; Top Doctors Bethesda Magazine; and Bethesda Magazine Top Docs. Dr. Gloger's professional affiliations include Holy Cross Hospital, Frederick Health, and Capital Digestive Care. Holy Cross Health reports that he is accepting new patients at his office in Rockville, MD.