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Dr. Mark R. Fleisher, MD

(3 Ratings)

Specializes in: Adult Gastroenterology

Tel Aviv University, Sackler Faculty of Medicine (1986 - 1990)

Professional interests include: gastrointestinal problems (digestive disorders)

836 Prudential Drive Suite 801
Jacksonville, FL 32207

(904) 398-7205

Dr. Mark R. Fleisher, MD is a gastroenterologist in Jacksonville, FL specializing in adult gastroenterology. He graduated from Tel Aviv University, Sackler Faculty of Medicine in 1990 and has 36 years of experience. Dr. Mark R. Fleisher, MD is affiliated with Baptist Health, Ascension and Borland-Groover Clinic P.A..

Office Locations

Borland-Groover Clinic P.A.

836 Prudential Drive Suite 801
Jacksonville, FL 32207

(904) 398-7205

(904) 288-8996

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Some issues Dr. Mark R. Fleisher, MD 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.

In The News

“Breakout sessions will include: Adult onset of IBD by Dr. Mark Fleisher of the Borland-Grover Clinic in Jacksonville; IBD and the pediatric patient by Dr. Enrique Hernandez-Sanchez of Gastro...”—"Free seminar for Crohn's and colitis patients", South Florida Sun-Sentinel, October 2015

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2012 were minimally invasive procedures, hospital care, inpatient care and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

biological response modifier (BRM) therapy	154
chemotherapy	154
diagnostic procedures	183
doctor visit	483
gastrointestinal procedures	340
hospital care	524
inpatient care	524
minimally invasive procedures	608
preventive care	96
removal of lesion (e.g. growth)	183

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2013 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

biological response modifier (BRM) therapy	199
chemotherapy	199
diagnostic procedures	193
doctor visit	565
gastrointestinal procedures	380
hospital care	363
inpatient care	363
minimally invasive procedures	691
preventive care	118
removal of lesion (e.g. growth)	193

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	288
Female	496

**Ethnicity**
Non-Hispanic White	549
Black	190
Hispanic	24
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	347
From 75 to 84	219
85 and over	72
Less than 65	146

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2013

Hypertension	75
High Cholesterol	63
Stroke	8
Ischemic Heart Disease	42
Depression	23
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	20
Atrial Fibrilation	12
Heart Failure	21
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2014 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

biological response modifier (BRM) therapy	267
chemotherapy	267
diagnostic procedures	196
doctor visit	492
gastrointestinal procedures	375
hospital care	324
inpatient care	324
minimally invasive procedures	736
preventive care	127
removal of lesion (e.g. growth)	196

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	274
Female	468

**Ethnicity**
Non-Hispanic White	524
Black	178
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	345
From 75 to 84	187
85 and over	56
Less than 65	154

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2014

Hypertension	74
High Cholesterol	63
Stroke	8
Ischemic Heart Disease	41
Depression	24
Chronic Kidney Disease	32
Asthma	13
Osteoperosis	17
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	37
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2015 were minimally invasive procedures, hospital care, inpatient care and chemotherapy.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

biological response modifier (BRM) therapy	410
chemotherapy	410
diagnostic procedures	199
doctor visit	544
gastrointestinal procedures	382
hospital care	551
inpatient care	551
minimally invasive procedures	868
preventive care	121
removal of lesion (e.g. growth)	199

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	620
Female	966

**Ethnicity**
Non-Hispanic White	1142
Black	350
Hispanic	40
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	740
From 75 to 84	394
85 and over	158
Less than 65	294

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2015

Hypertension	74
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	42
Depression	26
Chronic Kidney Disease	38
Asthma	22
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	26
Chronic Obstructive Pulmonary Disease	24
Diabetes	38
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2016 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

biological response modifier (BRM) therapy	298
chemotherapy	298
diagnostic procedures	222
doctor visit	691
gastrointestinal procedures	412
hospital care	356
inpatient care	356
minimally invasive procedures	772
preventive care	121
removal of lesion (e.g. growth)	222

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	309
Female	520

**Ethnicity**
Non-Hispanic White	599
Black	189
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	403
From 75 to 84	226
85 and over	63
Less than 65	137

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2016

Hypertension	75
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	42
Depression	24
Chronic Kidney Disease	38
Asthma	25
Osteoperosis	19
Atrial Fibrilation	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	20
Diabetes	37
Dementia	13
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2017 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	200
doctor visit	538
gastrointestinal procedures	387
hospital care	308
inpatient care	308
minimally invasive procedures	387
preventive care	128
removal of lesion (e.g. growth)	200

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	248
Female	303

**Ethnicity**
Non-Hispanic White	346
Black	178
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	278
From 75 to 84	120
85 and over	62
Less than 65	91

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2017

Hypertension	75
High Cholesterol	63
Stroke	10
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	45
Asthma	10
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	26
Chronic Obstructive Pulmonary Disease	21
Diabetes	43
Dementia	18
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2018 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	178
doctor visit	514
gastrointestinal procedures	352
hospital care	242
inpatient care	242
minimally invasive procedures	352
preventive care	108
removal of lesion (e.g. growth)	178

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	242
Female	293

**Ethnicity**
Non-Hispanic White	355
Black	149
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	277
From 75 to 84	134
85 and over	44
Less than 65	80

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2018

Hypertension	75
High Cholesterol	66
Stroke	11
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	44
Asthma	10
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	26
Chronic Obstructive Pulmonary Disease	23
Diabetes	43
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2019 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	183
doctor visit	445
gastrointestinal procedures	330
hospital care	411
inpatient care	411
minimally invasive procedures	345
preventive care	92
removal of lesion (e.g. growth)	183

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	230
Female	303

**Ethnicity**
Non-Hispanic White	364
Black	138
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	157
85 and over	51
Less than 65	63

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	12
Ischemic Heart Disease	49
Depression	32
Chronic Kidney Disease	47
Asthma	11
Osteoperosis	7
Atrial Fibrilation	16
Heart Failure	28
Chronic Obstructive Pulmonary Disease	25
Diabetes	42
Dementia	20
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2020 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	192
doctor visit	502
gastrointestinal procedures	287
hospital care	478
inpatient care	478
minimally invasive procedures	312
preventive care	62
removal of lesion (e.g. growth)	192

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	233
Female	248

**Ethnicity**
Non-Hispanic White	321
Black	131
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	244
From 75 to 84	124
85 and over	59
Less than 65	54

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2020

Hypertension	75
High Cholesterol	70
Stroke	12
Ischemic Heart Disease	51
Depression	31
Chronic Kidney Disease	53
Asthma	9
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	33
Chronic Obstructive Pulmonary Disease	24
Diabetes	46
Dementia	18
Cancer	20

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2021 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	174
doctor visit	559
gastrointestinal procedures	242
hospital care	218
inpatient care	218
minimally invasive procedures	242
preventive care	52
removal of lesion (e.g. growth)	174

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	161
Female	243

**Ethnicity**
Non-Hispanic White	282
Black	102
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	214
From 75 to 84	126
85 and over	22
Less than 65	42

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2021

Hypertension	75
High Cholesterol	70
Stroke	10
Ischemic Heart Disease	46
Depression	28
Chronic Kidney Disease	44
Asthma	12
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	21
Diabetes	35
Dementia	14
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

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

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	150
doctor visit	438
gastrointestinal procedures	244
hospital care	102
inpatient care	102
minimally invasive procedures	244
preventive care	75
removal of lesion (e.g. growth)	150

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	165
Female	198

**Ethnicity**
Non-Hispanic White	258
Black	82
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	191
From 75 to 84	111
85 and over	18
Less than 65	43

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	35
Depression	26
Chronic Kidney Disease	27
Asthma	17
Osteoperosis	13
Atrial Fibrilation	16
Heart Failure	20
Chronic Obstructive Pulmonary Disease	18
Diabetes	38
Dementia	8
Cancer	15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL during 2023 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

diagnostic procedures	200
doctor visit	506
gastrointestinal procedures	281
minimally invasive procedures	281
preventive care	68
removal of lesion (e.g. growth)	200

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Male	158
Female	190

**Ethnicity**
Non-Hispanic White	247
Black	81
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	204
From 75 to 84	88
85 and over	20
Less than 65	36

Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	22
Asthma	12
Osteoperosis	12
Atrial Fibrilation	14
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	3
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Mark R. Fleisher, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark R. Fleisher, MD treated as a gastroenterologist in Jacksonville, FL were minimally invasive procedures, hospital care, inpatient care and gastrointestinal procedures.

biological response modifier (BRM) therapy	265
chemotherapy	265
diagnostic procedures	189
doctor visit	523
gastrointestinal procedures	334
hospital care	352
inpatient care	352
minimally invasive procedures	486
preventive care	97
removal of lesion (e.g. growth)	189

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Mark R. Fleisher, MD.

**Gender**
Female	352
Male	244

**Ethnicity**
Black / African American	147
Asian / Pacific Islander	0
Non-Hispanic White	415
Native American / Alaskan Native	0
Hispanic	12
Other	2

**Age**
75 to 84	157
85 and over	52
Less than 65	95
65 to 74	292

Average of Total of Conditions of Medicare patients treated by Dr. Mark R. Fleisher, MD From 2012 - 2023

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

Hypertension	68
High Cholesterol	61
Stroke	9
Ischemic Heart Disease	39
Depression	23
Chronic Kidney Disease	35
Asthma	12
Osteoporosis	11
Heart Failure	21
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Atrial Fibrillation	12
Dementia	11
Cancer	13

Education & Training

Dr. Mark R. Fleisher, MD graduated from Tel Aviv University, Sackler Faculty of Medicine in 1990. He completed residency at Lenox Hill Hospital. He is certified by the Certifications: The American Board of Internal Medicine - Gastroenterology and has a state license in Florida.

Medical School: Tel Aviv University, Sackler Faculty of Medicine (1990)

Residency: Lenox Hill Hospital (1994)

Board Certification: Certifications: The American Board of Internal Medicine - Gastroenterology

Licensed In: Florida

Affiliations & Hospitals

Dr. Mark R. Fleisher, MD is associated with these hospitals and organizations:

Baptist Health

Ascension

Borland-Groover Clinic P.A.

Ratings & Reviews

Dr. Mark R. Fleisher, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Mark R. Fleisher, MD from all over the web to help you find the right in Jacksonville, FL.

Overall Rating

(3 Ratings)

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General Payments

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

**Payments by Company**
Janssen Scientific Affairs, LLC	$173,440 REMICADE $99,418	STELARA $74,022
Takeda Pharmaceuticals America, Inc.	$147,857 ENTYVIO $147,730	AMITIZA $115	Dexilant $12
Takeda Pharmaceuticals U.S.A., Inc.	$41,214 ENTYVIO $40,958	GATTEX $77	AMITIZA $72	MOTEGRITY $71	$36
Janssen Biotech, Inc.	$2,914 REMICADE $1,536	STELARA $1,023	SIMPONI $247	SIMPONI ARIA $50	Tremfya $44	Other $14
AbbVie, Inc.	$1,122 Mavyret $397	Humira $378	Creon $276	Viekira $13	$58
Other	$6,227 LINZESS $801	XIFAXAN $369	DUPIXENT $334	ZEPOSIA $269	Skyrizi $245	Other $4,209

**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	$277,656
Travel and Lodging	$71,021
Food and Beverage	$15,009
Consulting Fee	$8,909
Education	$175
Other	$4

Research Payments

Dr. Mark R. Fleisher, MD has received 487 research payments totaling $2,035,465.

Biography

Dr. Mark Fleisher works as an adult gastroenterology. Clinical interests for Dr. Fleisher include gastrointestinal problems (digestive disorders). His professional affiliations include Baptist Medical Center Beaches, Baptist Medical Center Jacksonville, and Ascension. After attending Tel Aviv University, Sackler Faculty of Medicine for medical school, he completed his residency training at Lenox Hill Hospital. In addition to English, Dr. Fleisher speaks Spanish.