Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CT Providers

Dr. Michael H. Nathanson, MD

Accepting New Patients

(Dr. Michael Harris Nathanson, MD)

(No ratings)

Specializes in: Adult Gastroenterology

Case Western Reserve University School of Medicine

Professional interests include: gastrointestinal problems (digestive disorders), liver disease, hepatobiliary disorders

20 York Street
New Haven, CT 06510

(203) 785-5110

Dr. Michael H. Nathanson, MD is a gastroenterologist in New Haven, CT specializing in adult gastroenterology. He graduated from Case Western Reserve University School of Medicine. Dr. Michael H. Nathanson, MD is affiliated with Yale New Haven Health and Smilow Cancer Hospital, Yale Medicine.

Office Locations

Smilow Cancer Hospital, Yale Medicine

20 York Street
New Haven, CT 06510

(203) 785-5110

(203) 782-7273

open_in_new

Smilow Cancer Hospital, Yale Medicine

226 Mill Hill Avenue
Bridgeport, CT 06610

(203) 384-4696

open_in_new

267 Grant Street
Bridgeport, CT 06610

open_in_new

Some issues Dr. Michael H. Nathanson, 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

“After all, "I would think of this as a new component that is common among a variety of organs, rather than a new organ in and of itself," said Dr. Michael Nathanson, professor of medicine and cell...”—"Newfound 'organ' could be the biggest in your body", CNN, March 2018

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2012 were hospital care and inpatient care.

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

hospital care	97
inpatient care	97

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2013 were hospital care and inpatient care.

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

hospital care	43
inpatient care	43

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

Hypertension	75
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	0
Depression	57
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	57
Chronic Obstructive Pulmonary Disease	0
Diabetes	67
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2014 were hospital care and inpatient care.

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

hospital care	225
inpatient care	225

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	45
Female	22

**Ethnicity**
Non-Hispanic White	41
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	44

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

Hypertension	63
High Cholesterol	25
Stroke	0
Ischemic Heart Disease	22
Depression	48
Chronic Kidney Disease	67
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	49
Chronic Obstructive Pulmonary Disease	24
Diabetes	48
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2015 were hospital care and inpatient care.

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

doctor visit	91
hospital care	83
inpatient care	83

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	82
Female	54

**Ethnicity**
Non-Hispanic White	76
Black	30
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	76

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

Hypertension	66
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	35
Depression	53
Chronic Kidney Disease	53
Asthma	19
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	37
Chronic Obstructive Pulmonary Disease	25
Diabetes	46
Dementia	16
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2016 were hospital care and inpatient care.

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

doctor visit	35
hospital care	113
inpatient care	113

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	37
Female	24

**Ethnicity**
Non-Hispanic White	28
Black	0
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	30

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

Hypertension	69
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	41
Depression	31
Chronic Kidney Disease	66
Asthma	39
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	34
Chronic Obstructive Pulmonary Disease	23
Diabetes	48
Dementia	23
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2017 were hospital care and inpatient care.

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

doctor visit	17
hospital care	85
inpatient care	85

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	36
Female	18

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

**Age**
From 65 to 74	25
From 75 to 84	0
85 and over	0
Less than 65	0

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

Hypertension	75
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	52
Depression	48
Chronic Kidney Disease	70
Asthma	20
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	44
Chronic Obstructive Pulmonary Disease	33
Diabetes	65
Dementia	30
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2018 were hospital care and inpatient care.

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

doctor visit	40
hospital care	49
inpatient care	49

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	35
Female	20

**Ethnicity**
Non-Hispanic White	24
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	26
From 75 to 84	0
85 and over	0
Less than 65	0

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

Hypertension	75
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	35
Depression	38
Chronic Kidney Disease	55
Asthma	20
Osteoperosis	0
Atrial Fibrilation	20
Heart Failure	42
Chronic Obstructive Pulmonary Disease	33
Diabetes	40
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2019 were hospital care and inpatient care.

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

doctor visit	40
hospital care	161
inpatient care	161

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	40
Female	32

**Ethnicity**
Non-Hispanic White	48
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	30
From 75 to 84	0
85 and over	0
Less than 65	30

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

Hypertension	75
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	39
Depression	42
Chronic Kidney Disease	65
Asthma	24
Osteoperosis	0
Atrial Fibrilation	15
Heart Failure	43
Chronic Obstructive Pulmonary Disease	31
Diabetes	49
Dementia	33
Cancer	15

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2020 were hospital care and inpatient care.

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

hospital care	91
inpatient care	91

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	34
Female	26

**Ethnicity**
Non-Hispanic White	32
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	29

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

Hypertension	75
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	43
Depression	48
Chronic Kidney Disease	70
Asthma	22
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	42
Chronic Obstructive Pulmonary Disease	23
Diabetes	43
Dementia	40
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT during 2021 were hospital care and inpatient care.

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

hospital care	15
inpatient care	15

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	21
Female	13

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

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	16

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

Hypertension	75
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	32
Depression	35
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	41
Chronic Obstructive Pulmonary Disease	0
Diabetes	56
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Male	14
Female	13

**Ethnicity**
Non-Hispanic White	16
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	13

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

Hypertension	74
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	0
Depression	41
Chronic Kidney Disease	48
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	56
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

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

The highest averages for the top procedures that Dr. Michael H. Nathanson, MD treated as a gastroenterologist in New Haven, CT were hospital care and inpatient care.

doctor visit	44
hospital care	96
inpatient care	96

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Michael H. Nathanson, MD.

**Gender**
Female	20
Male	31

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	28
Hispanic	3
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	0
75 to 84	0
Less than 65	21
65 to 74	7

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

The highest averages of the most common conditions of Medicare patients that Dr. Michael H. Nathanson, MD treated were hypertension, chronic kidney disease, diabetes and depression.

Hypertension	65
High Cholesterol	36
Stroke	0
Ischemic Heart Disease	27
Depression	40
Chronic Kidney Disease	58
Asthma	13
Osteoporosis	0
Heart Failure	35
Chronic Obstructive Pulmonary Disease	17
Diabetes	47
Atrial Fibrillation	3
Dementia	12
Cancer	1

Education & Training

Dr. Michael H. Nathanson, MD graduated from Case Western Reserve University School of Medicine. He completed residency at Columbia University Medical Center. He has a state license in Connecticut.

Medical School: Case Western Reserve University School of Medicine

Residency: Columbia University Medical Center

Licensed In: Connecticut

Affiliations & Hospitals

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

Yale New Haven Health

Smilow Cancer Hospital, Yale Medicine

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 H. Nathanson, MD appears to accept the following insurance providers: CorVel, Great-West Healthcare, WellCare, MultiPlan, Community Care Network (CCN), United Healthcare, Aetna, Oxford Health Plans, Consumer Health Network, Medicare, Medicaid, Humana, Cigna, Anthem, ConnectiCare, Focus Health Solutions, First Health, Prime Health, Private Healthcare Systems (PHCS), TRICARE - HEALTH NET FEDERAL, COMPWORKS, HEALTHCARE VALUE MANAGEMENT, MANAGED COMP, TRICARE/CHAMPUS, HUSKY and PREFERRED HEALTH WORKS.

Insurance Accepted by Provider includes:

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

CorVel

Great-West Healthcare

WellCare

MultiPlan

Community Care Network (CCN)

United Healthcare

Aetna

Oxford Health Plans

Consumer Health Network

Medicare

Medicaid

Humana

Cigna

Anthem

ConnectiCare

Focus Health Solutions

First Health

Prime Health

Private Healthcare Systems (PHCS)

TRICARE - HEALTH NET FEDERAL

COMPWORKS

HEALTHCARE VALUE MANAGEMENT

MANAGED COMP

TRICARE/CHAMPUS

HUSKY

PREFERRED HEALTH WORKS

Ratings & Reviews

Dr. Michael H. Nathanson, MD does not have any reviews yet, be the first to leave a review of Dr. Michael H. Nathanson, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

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

**Payments by Company**
Gilead Sciences Inc	$10,161 $10,161
Salix Pharmaceuticals, Ltd	$21 Xifaxan 550 mg $21
Janssen Biotech, Inc.	$13 REMICADE $13

**Types of Payments**
Grant	$5,045
Consulting Fee	$3,000
Travel and Lodging	$1,796
Food and Beverage	$354

Biography

Dr. Michael Nathanson's specialty is adult gastroenterology. Clinical interests for Dr. Nathanson include gastrointestinal problems (digestive disorders) and liver disease. Dr. Nathanson accepts Anthem, ConnectiCare, Blue California, and more. He graduated from Case Western Reserve University School of Medicine and then he performed his residency at New York-Presbyterian Hospital. He is professionally affiliated with Yale New Haven Health. Yale New Haven Health reports that Dr. Nathanson is accepting new patients at his office in BRIDGEPORT, CT.