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Dr. Michael Gerdis, MD

Accepting New Patients

(471 Ratings)

Specializes in: Adult Gastroenterology

New York University (NYU) School of Medicine

Professional interests include: acid reflux (GERD), heartburn, anal fissures, and more.

116 Fifth Avenue
Pelham, NY 10803

(914) 813-3135

Dr. Michael Gerdis, MD is a gastroenterologist in Yonkers, NY specializing in adult gastroenterology. He graduated from New York University (NYU) School of Medicine. Dr. Michael Gerdis, MD is affiliated with Mount Sinai Health System.

Office Locations

Mount Sinai Health System

1086 North Broadway
Yonkers, NY 10701

(914) 968-3535

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116 Fifth Avenue
Pelham, NY 10803

(914) 813-3135

(914) 813-3138

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2422 Central Park Avenue
Yonkers, NY 10710

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280 North Central Park Avenue Suite 70
Hartsdale, NY 10530

(914) 666-7900

(914) 666-7901

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Mount Sinai Health System

341 Central Park Avenue
Scarsdale, NY 10583

(914) 370-5000

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750 Kimball Avenue
Yonkers, NY 10704

(914) 237-6763

(914) 237-7347

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Some issues Dr. Michael Gerdis, MD can help you with:

Colonoscopy

Colonoscopy is the use of a special tool called a colonoscope (a thin, flexible tube with a camera on the end) to examine the inside of the colon and rectum. The tube is typically inserted anally, and it allows the physician to examine the large intestine from the inside. It may be done at any time to diagnose bowel problems, but routine colonoscopies are advised after the age of 50 to screen for colon cancer.

A colonoscopy may be performed to diagnose:

Intestinal ulcers
Polyps
Bowel cancer
An unidentified source of pain or bleeding in the intestine

Patients may be asked to drink only liquids in the days before a colonoscopy, or they may be given an enema to remove residual fecal matter. Before the exam, patients are given medication to help them relax, and then lay on their side on a table. The scope is inserted into the anus and gently moved all the way through the large intestine. Air may be pumped into the intestine to improve the view for the physician. Any polyps that are found will be removed. Then the colonoscope will be withdrawn. A colonoscopy is not usually painful, but patients may feel some bloating or have some cramps right afterward. If patients have polyps removed, they might experience a small amount of bleeding. Any side effects should go away within a few hours.

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. Michael Gerdis, MD in 2023

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

Top 25%

By Volume:

blood draw

phlebotomy for lab tests

In 2012, Dr. Michael Gerdis, MD performed more blood draw, and phlebotomy for lab tests procedures for Medicare patients than 75% of providers in related specialties within New York.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2012 were blood draw, lab tests, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	218
diagnostic procedures	40
doctor visit	619
gastrointestinal procedures	72
lab tests	82
minimally invasive procedures	72
preventive care	77
removal of lesion (e.g. growth)	40
vaccines	45

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2013 were blood draw, lab tests, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	263
diagnostic procedures	43
doctor visit	788
gastrointestinal procedures	81
lab tests	144
minimally invasive procedures	81
preventive care	124
removal of lesion (e.g. growth)	43
vaccines	54

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	205
Female	227

**Ethnicity**
Non-Hispanic White	300
Black	80
Hispanic	33
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	268
From 75 to 84	96
85 and over	36
Less than 65	32

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2013

Hypertension	60
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	41
Depression	13
Chronic Kidney Disease	7
Asthma	4
Osteoperosis	5
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	41
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2014 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	350
diagnostic procedures	33
doctor visit	1421
ear procedures	13
gastrointestinal procedures	53
lab tests	222
minimally invasive procedures	53
preventive care	103
removal of lesion (e.g. growth)	33
vaccines	68

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	318
Female	387

**Ethnicity**
Non-Hispanic White	495
Black	117
Hispanic	64
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	413
From 75 to 84	161
85 and over	66
Less than 65	65

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2014

Hypertension	57
High Cholesterol	50
Stroke	3
Ischemic Heart Disease	39
Depression	13
Chronic Kidney Disease	11
Asthma	6
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	36
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2015 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	388
diagnostic procedures	44
doctor visit	1357
ear procedures	15
gastrointestinal procedures	48
lab tests	209
minimally invasive procedures	48
preventive care	122
pulmonary testing	13
removal of lesion (e.g. growth)	29
vaccines	73

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	650
Female	844

**Ethnicity**
Non-Hispanic White	998
Black	258
Hispanic	168
Asian	22
Other	48
Native American	0

**Age**
From 65 to 74	898
From 75 to 84	322
85 and over	134
Less than 65	140

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2015

Hypertension	63
High Cholesterol	56
Stroke	2
Ischemic Heart Disease	39
Depression	13
Chronic Kidney Disease	12
Asthma	6
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	41
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2016 were blood draw, lab tests, preventive care and vaccines.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	453
diagnostic procedures	31
doctor visit	1529
gastrointestinal procedures	53
lab tests	247
minimally invasive procedures	53
preventive care	108
removal of lesion (e.g. growth)	31
vaccines	67

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	352
Female	451

**Ethnicity**
Non-Hispanic White	526
Black	143
Hispanic	95
Asian	15
Other	24
Native American	0

**Age**
From 65 to 74	460
From 75 to 84	188
85 and over	73
Less than 65	82

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2016

Hypertension	63
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	38
Depression	13
Chronic Kidney Disease	14
Asthma	10
Osteoperosis	5
Atrial Fibrilation	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	44
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2017 were blood draw, lab tests and preventive care.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	520
doctor visit	1395
lab tests	314
preventive care	32

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	323
Female	376

**Ethnicity**
Non-Hispanic White	458
Black	141
Hispanic	70
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	399
From 75 to 84	186
85 and over	57
Less than 65	57

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2017

Hypertension	67
High Cholesterol	46
Stroke	2
Ischemic Heart Disease	37
Depression	10
Chronic Kidney Disease	16
Asthma	5
Osteoperosis	4
Atrial Fibrilation	6
Heart Failure	7
Chronic Obstructive Pulmonary Disease	8
Diabetes	35
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2018 were blood draw, lab tests, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	381
diagnostic procedures	13
doctor visit	701
gastrointestinal procedures	32
lab tests	215
minimally invasive procedures	32
preventive care	63
removal of lesion (e.g. growth)	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	218
Female	225

**Ethnicity**
Non-Hispanic White	294
Black	81
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	268
From 75 to 84	124
85 and over	25
Less than 65	26

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2018

Hypertension	60
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	43
Depression	11
Chronic Kidney Disease	14
Asthma	4
Osteoperosis	5
Atrial Fibrilation	5
Heart Failure	6
Chronic Obstructive Pulmonary Disease	5
Diabetes	25
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2019 were blood draw, lab tests, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	323
diagnostic procedures	38
doctor visit	733
gastrointestinal procedures	77
lab tests	195
minimally invasive procedures	77
preventive care	94
removal of lesion (e.g. growth)	38
vaccines	17

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	230
Female	239

**Ethnicity**
Non-Hispanic White	301
Black	93
Hispanic	45
Asian	11
Other	19
Native American	0

**Age**
From 65 to 74	282
From 75 to 84	123
85 and over	26
Less than 65	38

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2019

Hypertension	63
High Cholesterol	49
Stroke	4
Ischemic Heart Disease	45
Depression	10
Chronic Kidney Disease	16
Asthma	4
Osteoperosis	3
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2020 were blood draw, lab tests, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	205
doctor visit	244
gastrointestinal procedures	18
lab tests	119
minimally invasive procedures	18
preventive care	34
vaccines	16

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	186
Female	180

**Ethnicity**
Non-Hispanic White	233
Black	73
Hispanic	36
Asian	12
Other	12
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	110
85 and over	28
Less than 65	30

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2020

Hypertension	62
High Cholesterol	43
Stroke	5
Ischemic Heart Disease	45
Depression	8
Chronic Kidney Disease	19
Asthma	4
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	8
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. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2021 were blood draw, minimally invasive procedures, gastrointestinal procedures and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	198
diagnostic procedures	60
doctor visit	375
gastrointestinal procedures	86
lab tests	37
minimally invasive procedures	86
preventive care	26
removal of lesion (e.g. growth)	60

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	174
Female	192

**Ethnicity**
Non-Hispanic White	230
Black	69
Hispanic	47
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	109
85 and over	26
Less than 65	30

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2021

Hypertension	64
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	44
Depression	11
Chronic Kidney Disease	17
Asthma	4
Osteoperosis	5
Atrial Fibrilation	4
Heart Failure	7
Chronic Obstructive Pulmonary Disease	6
Diabetes	30
Dementia	4
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY during 2022 were blood draw, minimally invasive procedures, gastrointestinal procedures and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

blood draw	221
diagnostic procedures	78
doctor visit	356
gastrointestinal procedures	102
minimally invasive procedures	102
preventive care	24
removal of lesion (e.g. growth)	78

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	181
Female	178

**Ethnicity**
Non-Hispanic White	230
Black	67
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	190
From 75 to 84	126
85 and over	25
Less than 65	18

Conditions of Medicare patients treated by Dr. Michael Gerdis, MD in 2022

Hypertension	69
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	29
Depression	8
Chronic Kidney Disease	10
Asthma	6
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	5
Chronic Obstructive Pulmonary Disease	5
Diabetes	19
Dementia	4
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Michael Gerdis, MD for Medicare patients.

The highest averages for the top procedures that Dr. Michael Gerdis, MD treated as a gastroenterologist in Yonkers, NY were blood draw, lab tests, preventive care and minimally invasive procedures.

blood draw	320
diagnostic procedures	42
doctor visit	865
ear procedures	14
gastrointestinal procedures	62
lab tests	178
minimally invasive procedures	62
preventive care	73
pulmonary testing	13
removal of lesion (e.g. growth)	40
vaccines	48

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Michael Gerdis, MD.

**Gender**
Male	257
Female	299

**Ethnicity**
Black / African American	102
Asian / Pacific Islander	5
Non-Hispanic White	369
Native American / Alaskan Native	0
Hispanic	57
Other	9

**Age**
75 to 84	140
85 and over	45
Less than 65	47
65 to 74	325

Average of Total of Conditions of Medicare patients treated by Dr. Michael Gerdis, MD From 2012 - 2022

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

Hypertension	57
High Cholesterol	46
Stroke	2
Ischemic Heart Disease	36
Depression	10
Chronic Kidney Disease	12
Asthma	4
Osteoporosis	4
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	28
Atrial Fibrillation	5
Dementia	4
Cancer	9

Education & Training

Dr. Michael Gerdis, MD graduated from New York University (NYU) School of Medicine. He completed residency at St. Luke's-Roosevelt Hospital Center. He is certified by the American Board of Internal Medicine and has a state license in New York.

Medical School: New York University (NYU) School of Medicine

Residency: St. Luke's-Roosevelt Hospital Center

Board Certification: American Board of Internal Medicine

Licensed In: New York

Affiliations & Hospitals

Dr. Michael Gerdis, MD is associated with these hospitals and organizations:

Mount Sinai Health System

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Michael Gerdis, MD appears to accept the following insurance providers: Horizon Blue Cross Blue Shield, MagnaCare, Elderplan, EmblemHealth, Oscar, WellCare, Fidelis Care, United Healthcare, Cigna, 1199SEIU, Healthfirst Medicare, Private Healthcare Systems (PHCS), Group Health Incorporated (GHI), Centivo, Medicare - NY, AETNA - Medicare, Oxford - Freedom and Liberty, Medicare - NJ, AETNA - Commercial and VNSNY Choice Medicare.

Insurance Accepted by Provider includes:

According to our sources, Dr. Michael Gerdis, MD accepts the following insurance providers:

Horizon Blue Cross Blue Shield

MagnaCare

Elderplan

EmblemHealth

Oscar

WellCare

Fidelis Care

United Healthcare

Cigna

1199SEIU

Healthfirst Medicare

Private Healthcare Systems (PHCS)

Group Health Incorporated (GHI)

Centivo

Medicare - NY

AETNA - Medicare

Oxford - Freedom and Liberty

Medicare - NJ

AETNA - Commercial

VNSNY Choice Medicare

Ratings & Reviews

Dr. Michael Gerdis, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 471 ratings. We collect ratings and reviews of Dr. Michael Gerdis, MD from all over the web to help you find the right in Yonkers, NY.

4.9

Overall Rating

(471 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2017-10-07

I have been going to Dr. Gerdis since he began his practice probably 20 years ago.  He is an excellent diagnostician and has identified a few problems before they became serious.  He is always prepared for follow-up visits, explains clearly what is happening and his plans for keeping me healthy.  

Hard to find a Doctor this good and interested in patients. As of October 6, 2017
I have been going to Dr. Gerdis since he began his practice probably 20 years ago. He is an excellent diagnostician and has identified a few problems before they became serious. He is always prepared for follow-up visits, explains clearly what is happening and his plans for keeping me healthy.

General Payments

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

**Payments by Company**
CIPHER PHARMACEUTICALS US LLC	$484 SITAVIG $275	BIONECT $209
Valeant Pharmaceuticals North America LLC	$467 XIFAXANIBSD $266	XIFAXAN $123	UCERIS TABLETS $41	XIFIXAN $19	UCERIS FOAM $18
Allergan Inc.	$429 VIBERZI $273	LINZESS $136	BYSTOLIC $20
Salix Pharmaceuticals, Ltd	$400 XIFAXAN 550 MG TABLETS $53	Uceris $47	APRISO $42	XIFAXAN - 550MG $21	Xifaxan 550 mg $17	Other $221
AbbVie, Inc.	$399 Humira $399
Other	$2,225 Duexis $256	LINZESS $211	MOVANTIK $193	PREPOPIK $125	Zipsor $124	Other $1,316

**Types of Payments**
Food and Beverage	$3,647
Education	$321
Honoraria	$275
Gift	$157
Consulting Fee	$4

Research Payments

Dr. Michael Gerdis, MD has received 123 research payments totaling $6,591,074.

Biography

Dr. Michael Gerdis' specialty is adult gastroenterology. Patient reviews placed him at an average of 5.0 stars (out of 5). Dr. Gerdis's areas of expertise include pain, stomach problems, and crohn's disease. His hospital/clinic affiliations include Mount Sinai Hospital and Mount Sinai Health System. He appears to be an in-network provider for Blue California, Fidelis Care, Elderplan, and more. Dr. Gerdis's practice in Yonkers, NY is open to new patients as reported by Mount Sinai Health System. He graduated from New York University (NYU) School of Medicine and then he performed his residency at St. Luke's-Roosevelt Hospital Center. In addition to English, he speaks Spanish.