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Home > OR Providers > Hepatologists

Dr. Atif Zaman, MD, MPH

(39 Ratings)

Specializes in: Hepatology (Liver Disease) and Adult Gastroenterology

Tufts University School of Medicine (1991)

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

3161 Sw Pavilion Loop
Portland, OR 97239

(503) 494-4373

Dr. Atif Zaman, MD, MPH is a hepatologist in Portland, OR specializing in hepatology (liver disease) and adult gastroenterology. He graduated from Tufts University School of Medicine in 1991 and has 35 years of experience. Dr. Atif Zaman, MD, MPH is affiliated with OHSU Healthcare.

Office Locations

OHSU Healthcare

3161 Sw Pavilion Loop
Portland, OR 97239

(503) 494-4373

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3181 Sw Sam Jackson Park Road
Portland, OR 97239

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3485 S. Bond Avenue
Portland, OR 97239

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Some issues Dr. Atif Zaman, MD, MPH 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. Atif Zaman, MD, MPH in 2023

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

Top 25%

By Affordability:

EGD with biopsy

EGD with lesion removal

therapeutic EGD

therapeutic upper endoscopy

upper endoscopy with biopsy

upper endoscopy with lesion removal

In 2012, Dr. Atif Zaman, MD, MPH had a list price for EGD with biopsy, EGD with lesion removal, therapeutic EGD, therapeutic upper endoscopy, upper endoscopy with biopsy, and upper endoscopy with lesion removal that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Oregon. 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. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2012 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	12
doctor visit	263
gastrointestinal procedures	62
hospital care	20
inpatient care	20
minimally invasive procedures	62
removal of lesion (e.g. growth)	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2013 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	41
doctor visit	233
gastrointestinal procedures	124
hospital care	38
inpatient care	38
minimally invasive procedures	124
preventive care	31
removal of lesion (e.g. growth)	41

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	138
Female	139

**Ethnicity**
Non-Hispanic White	227
Black	13
Hispanic	0
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	112
From 75 to 84	0
85 and over	0
Less than 65	135

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2013

Hypertension	46
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	20
Depression	27
Chronic Kidney Disease	33
Asthma	5
Osteoperosis	8
Atrial Fibrilation	5
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	37
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2014 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	20
doctor visit	247
gastrointestinal procedures	74
minimally invasive procedures	74
preventive care	11
removal of lesion (e.g. growth)	20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	130
Female	127

**Ethnicity**
Non-Hispanic White	216
Black	0
Hispanic	0
Asian	11
Other	11
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	0
85 and over	0
Less than 65	116

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2014

Hypertension	42
High Cholesterol	24
Stroke	0
Ischemic Heart Disease	15
Depression	30
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	9
Atrial Fibrilation	0
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2015 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	55
doctor visit	221
gastrointestinal procedures	147
hospital care	23
inpatient care	23
minimally invasive procedures	147
preventive care	28
removal of lesion (e.g. growth)	55

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	286
Female	282

**Ethnicity**
Non-Hispanic White	494
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	252
From 75 to 84	0
85 and over	0
Less than 65	230

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2015

Hypertension	45
High Cholesterol	21
Stroke	0
Ischemic Heart Disease	15
Depression	23
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	10
Atrial Fibrilation	4
Heart Failure	10
Chronic Obstructive Pulmonary Disease	11
Diabetes	28
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2016 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	45
doctor visit	215
gastrointestinal procedures	106
hospital care	83
inpatient care	83
minimally invasive procedures	106
removal of lesion (e.g. growth)	45

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	124
Female	139

**Ethnicity**
Non-Hispanic White	213
Black	0
Hispanic	0
Asian	12
Other	11
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	0
85 and over	0
Less than 65	100

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2016

Hypertension	47
High Cholesterol	26
Stroke	0
Ischemic Heart Disease	16
Depression	22
Chronic Kidney Disease	39
Asthma	16
Osteoperosis	10
Atrial Fibrilation	5
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	32
Dementia	8
Cancer	6

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	26
doctor visit	242
gastrointestinal procedures	78
minimally invasive procedures	78
removal of lesion (e.g. growth)	26

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	148
Female	142

**Ethnicity**
Non-Hispanic White	237
Black	12
Hispanic	0
Asian	13
Other	12
Native American	0

**Age**
From 65 to 74	144
From 75 to 84	0
85 and over	0
Less than 65	106

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2017

Hypertension	52
High Cholesterol	25
Stroke	0
Ischemic Heart Disease	22
Depression	29
Chronic Kidney Disease	41
Asthma	8
Osteoperosis	9
Atrial Fibrilation	5
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	37
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2018 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

doctor visit	230
gastrointestinal procedures	42
minimally invasive procedures	42

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	108
Female	109

**Ethnicity**
Non-Hispanic White	179
Black	0
Hispanic	0
Asian	13
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	0
85 and over	0
Less than 65	66

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2018

Hypertension	55
High Cholesterol	28
Stroke	0
Ischemic Heart Disease	24
Depression	25
Chronic Kidney Disease	43
Asthma	6
Osteoperosis	14
Atrial Fibrilation	7
Heart Failure	19
Chronic Obstructive Pulmonary Disease	10
Diabetes	42
Dementia	11
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2019 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

doctor visit	181
gastrointestinal procedures	20
minimally invasive procedures	20

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	97
Female	97

**Ethnicity**
Non-Hispanic White	153
Black	0
Hispanic	11
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	0
85 and over	0
Less than 65	53

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2019

Hypertension	53
High Cholesterol	28
Stroke	0
Ischemic Heart Disease	18
Depression	29
Chronic Kidney Disease	43
Asthma	8
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	37
Dementia	10
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2020 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

doctor visit	15
gastrointestinal procedures	22
minimally invasive procedures	22

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	86
Female	99

**Ethnicity**
Non-Hispanic White	151
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	112
From 75 to 84	0
85 and over	0
Less than 65	51

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2020

Hypertension	53
High Cholesterol	31
Stroke	0
Ischemic Heart Disease	23
Depression	29
Chronic Kidney Disease	45
Asthma	9
Osteoperosis	10
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	42
Dementia	11
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

diagnostic procedures	14
doctor visit	35
gastrointestinal procedures	37
minimally invasive procedures	37
removal of lesion (e.g. growth)	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	76
Female	83

**Ethnicity**
Non-Hispanic White	135
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	92
From 75 to 84	0
85 and over	0
Less than 65	39

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2021

Hypertension	48
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	21
Depression	24
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	0
Diabetes	38
Dementia	7
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR during 2022 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

doctor visit	83
gastrointestinal procedures	13
minimally invasive procedures	13

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	72
Female	80

**Ethnicity**
Non-Hispanic White	122
Black	0
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	98
From 75 to 84	0
85 and over	0
Less than 65	30

Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH in 2022

Hypertension	56
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	14
Depression	24
Chronic Kidney Disease	24
Asthma	9
Osteoperosis	20
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Atif Zaman, MD, MPH for Medicare patients.

The highest averages for the top procedures that Dr. Atif Zaman, MD, MPH treated as a hepatologist in Portland, OR were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

diagnostic procedures	30
doctor visit	178
gastrointestinal procedures	65
hospital care	41
inpatient care	41
minimally invasive procedures	65
preventive care	23
removal of lesion (e.g. growth)	30

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Atif Zaman, MD, MPH.

**Gender**
Male	115
Female	117

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	5
Non-Hispanic White	193
Native American / Alaskan Native	0
Hispanic	1
Other	5

**Age**
75 to 84	0
85 and over	0
Less than 65	84
65 to 74	115

Average of Total of Conditions of Medicare patients treated by Dr. Atif Zaman, MD, MPH From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Atif Zaman, MD, MPH treated were hypertension, chronic kidney disease, diabetes and high cholesterol.

Hypertension	45
High Cholesterol	26
Stroke	0
Ischemic Heart Disease	17
Depression	23
Chronic Kidney Disease	32
Asthma	7
Osteoporosis	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	32
Atrial Fibrillation	3
Dementia	5
Cancer	5

Education & Training

Dr. Atif Zaman, MD, MPH graduated from Tufts University School of Medicine in 1991. He completed residency at Baylor College of Medicine Affiliated Hospitals. He has a state license in Oregon.

Medical School: Tufts University School of Medicine (1991)

Residency: Baylor College of Medicine Affiliated Hospitals

Licensed In: Oregon

Affiliations & Hospitals

Dr. Atif Zaman, MD, MPH is associated with these hospitals and organizations:

OHSU Healthcare

Ratings & Reviews

Dr. Atif Zaman, MD, MPH has an exceptional overall rating with an average of 5.0 out of 5 stars based on 39 ratings. We collect ratings and reviews of Dr. Atif Zaman, MD, MPH from all over the web to help you find the right in Portland, OR.

Overall Rating

(39 Ratings)

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General Payments

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

**Payments by Company**
E.R. Squibb & Sons, L.L.C.	$81,749 BARACLUDE $81,749

**Types of Payments**
Consulting Fee	$80,184
Travel and Lodging	$1,132
Food and Beverage	$433

Research Payments

Dr. Atif Zaman, MD, MPH has received 93 research payments totaling $491,551.

Biography

Dr. Atif Zaman practices adult gastroenterology and hepatology (liver disease) in Portland, OR. He has a special interest in gastrointestinal problems (digestive disorders) and liver cancer. His average rating from his patients is 5.0 stars (out of 5). Dr. Zaman graduated from Tufts University School of Medicine and then he performed his residency at a hospital affiliated with Baylor College of Medicine. He is affiliated with OHSU Healthcare.