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Dr. Mark L. Cohen, MD

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Specializes in: Hematopathology, Blood Banking & Transfusion Medicine, Dermatopathology, Chemical Pathology and Immunopathology

Weill Cornell Medical College (1983)

Professional interests include: gastrointestinal problems (digestive disorders), neurodegenerative diseases

11100 Euclid Avenue
Cleveland, OH 44106

(216) 844-7494

Dr. Mark L. Cohen, MD is a hematopathologist in Cleveland, OH specializing in hematopathology, blood banking & transfusion medicine, dermatopathology, chemical pathology and immunopathology. He graduated from Weill Cornell Medical College in 1983 and has 43 years of experience. Dr. Mark L. Cohen, MD is affiliated with University Hospitals.

Office Locations

11100 Euclid Avenue
Cleveland, OH 44106

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Some issues Dr. Mark L. Cohen, 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.

Noteworthy Medicare Patient Procedures Performed by Dr. Mark L. Cohen, MD in 2023

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

Top 5%

By Affordability:

immunohistochemistry test

special stains

In 2023, Dr. Mark L. Cohen, MD had a list price for immunohistochemistry (IHC) test, and special stains that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Ohio. 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:

intraoperative pathology consultation

By Affordability:

lab tests

In 2012, among providers in related specialties within Ohio, Dr. Mark L. Cohen, MD performed more intraoperative pathology consultation procedures for Medicare patients than 75% of them and he also had a list price for lab tests 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 L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2012 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	48
lab tests	403

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2013 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	52
lab tests	480

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	272
Female	373

**Ethnicity**
Non-Hispanic White	471
Black	155
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	282
From 75 to 84	176
85 and over	54
Less than 65	133

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2013

Hypertension	73
High Cholesterol	56
Stroke	7
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	32
Dementia	9
Cancer	19

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2014 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	59
lab tests	221

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	175
Female	280

**Ethnicity**
Non-Hispanic White	318
Black	117
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	114
85 and over	30
Less than 65	106

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2014

Hypertension	71
High Cholesterol	56
Stroke	10
Ischemic Heart Disease	39
Depression	26
Chronic Kidney Disease	24
Asthma	12
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	8
Cancer	17

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2015 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	54
lab tests	159

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	620
Female	674

**Ethnicity**
Non-Hispanic White	970
Black	270
Hispanic	0
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	682
From 75 to 84	318
85 and over	76
Less than 65	218

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2015

Hypertension	69
High Cholesterol	57
Stroke	7
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	27
Asthma	11
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2016 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	90
lab tests	120

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	233
Female	288

**Ethnicity**
Non-Hispanic White	377
Black	116
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	279
From 75 to 84	123
85 and over	28
Less than 65	91

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2016

Hypertension	70
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	27
Asthma	20
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	17
Diabetes	31
Dementia	11
Cancer	19

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2017 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	36
lab tests	63

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	204
Female	255

**Ethnicity**
Non-Hispanic White	351
Black	80
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	249
From 75 to 84	111
85 and over	22
Less than 65	77

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2017

Hypertension	72
High Cholesterol	52
Stroke	6
Ischemic Heart Disease	35
Depression	27
Chronic Kidney Disease	32
Asthma	8
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	20
Diabetes	32
Dementia	9
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2018 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	47
lab tests	158

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	297
Female	300

**Ethnicity**
Non-Hispanic White	478
Black	84
Hispanic	0
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	338
From 75 to 84	161
85 and over	33
Less than 65	65

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2018

Hypertension	71
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	38
Depression	30
Chronic Kidney Disease	29
Asthma	9
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	10
Cancer	17

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2019 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	32
lab tests	140

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	228
Female	270

**Ethnicity**
Non-Hispanic White	415
Black	47
Hispanic	0
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	289
From 75 to 84	133
85 and over	23
Less than 65	53

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2019

Hypertension	71
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	35
Depression	29
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Dementia	9
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2020 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	35
lab tests	116

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	246
Female	276

**Ethnicity**
Non-Hispanic White	438
Black	47
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	296
From 75 to 84	159
85 and over	19
Less than 65	48

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2020

Hypertension	71
High Cholesterol	64
Stroke	7
Ischemic Heart Disease	36
Depression	29
Chronic Kidney Disease	29
Asthma	8
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	16
Diabetes	28
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2021 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	31
lab tests	115

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	320
Female	462

**Ethnicity**
Non-Hispanic White	674
Black	62
Hispanic	0
Asian	0
Other	31
Native American	0

**Age**
From 65 to 74	487
From 75 to 84	199
85 and over	37
Less than 65	59

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2021

Hypertension	72
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	7
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH during 2022 were lab tests and consultation.

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

consultation	42
lab tests	84

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Male	331
Female	382

**Ethnicity**
Non-Hispanic White	608
Black	60
Hispanic	0
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	439
From 75 to 84	188
85 and over	41
Less than 65	45

Conditions of Medicare patients treated by Dr. Mark L. Cohen, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	30
Depression	23
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	13
Chronic Obstructive Pulmonary Disease	18
Diabetes	29
Dementia	5
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark L. Cohen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark L. Cohen, MD treated as a hematopathologist in Cleveland, OH were lab tests and consultation.

consultation	47
lab tests	187

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark L. Cohen, MD.

**Gender**
Female	323
Male	266

**Ethnicity**
Black / African American	94
Asian / Pacific Islander	0
Non-Hispanic White	463
Hispanic	0
Native American / Alaskan Native	0
Other	13

**Age**
85 and over	33
75 to 84	152
Less than 65	81
65 to 74	322

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

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

Hypertension	65
High Cholesterol	56
Stroke	7
Ischemic Heart Disease	32
Depression	24
Chronic Kidney Disease	24
Asthma	9
Osteoporosis	7
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Atrial Fibrillation	10
Dementia	7
Cancer	15

Education & Training

Dr. Mark L. Cohen, MD graduated from Weill Cornell Medical College in 1983. He completed residency at University Hospitals, Cleveland. He is certified by the Neuropathology - American Board of Pathology and has a state license in Ohio.

Medical School: Weill Cornell Medical College (1983)

Residency: University Hospitals, Cleveland (1988)

Board Certification: Neuropathology - American Board of Pathology

Licensed In: Ohio

Affiliations & Hospitals

Dr. Mark L. Cohen, MD is associated with these hospitals and organizations:

University Hospitals

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General Payments

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

**Payments by Company**
Otsuka America Pharmaceutical, Inc.	$24 BREATHTEK $24

**Types of Payments**
Food and Beverage	$24

Biography

Dr. Mark Cohen is a specialist in immunopathology, chemical pathology, and forensic pathology. He has indicated that his clinical interests include gastrointestinal problems (digestive disorders) and neurodegenerative diseases. Dr. Cohen graduated from Weill Cornell Medical College. He trained at the University Hospitals, Cleveland for his residency. He is professionally affiliated with the University Hospitals.