Hosp Pract (1995)
Dr. Atif Zaman, MD
- Medicare services, 2024
- 154
- Medicare patients, 2024
- 132
- Part D claims, 2024
- 781
- Publications
- 17
- MIPS score, 2024
- 99
- Practice address
- 3181 SW Sam Jackson Park Road, Portland, OR 97239
- Practice phone
- Call (503) 494-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zaman's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Atif Zaman is a gastroenterologist in Portland, Oregon
Dr. Zaman practices at OHSU Hospital in Portland, Oregon, part of State of Oregon.
Dr. Zaman's NPI, 1003821513, was assigned on July 31, 2006. Dr. Zaman graduated from Tufts University School of Medicine in 1991. Dr. Zaman holds Oregon license MD19123.
- NPI
- 1003821513NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335200534
- NPI enumeration date
- July 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 494-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Atif Zaman practices at OHSU Hospital in Portland, Oregon
Dr. Zaman's primary practice is OHSU Hospital, at 3181 SW Sam Jackson Park Road, Portland, OR 97239 in Multnomah County. The practice phone is (503) 494-9000.
- OHSU Hospital3181 SW Sam Jackson Park Road, Portland, OR 97239 · Multnomah CountyPhone(503) 494-9000
Source: Dmand AI Affiliation Data
Dr. Atif Zaman is affiliated with 5 sites of care and 1 medical group
Dr. Zaman's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dr. Zaman is also affiliated with Adventist Health Portland. The medical group on file is Oregon Health & Science University (OHSU). Dmand AI also links Dr. Zaman to 2 more hospitals and 1 clinical lab, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Atif Zaman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zaman practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OHSU Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across State of Oregon and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Atif Zaman is one of 226 gastroenterologists in Oregon
Gastroenterology is Dr. Zaman's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Zaman is licensed in Oregon.
Specialties and state licenses
- Gastroenterology, OregonPrimary
Gastroenterologists near Dr. Zaman
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Atif Zaman billed Medicare for 154 services in 2024
CMS data shows 154 Medicare services from Dr. Zaman across 6 procedure codes in 2024, for 132 Medicare patients. Medicare paid $7,230 for them.
Dr. Zaman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 922024: 7518%
- Other services
- 2023: 352024: 5351%
- Surgery
- 2023: 262024: 26No change
Where Dr. Zaman's Medicare services took place, 2024
- In an office6240%
- In a facility9260%
Dr. Zaman compared with the Oregon median for gastroenterologists, 2024
- Dr. Zaman
- Oregon median
- Medicare services
- 154vs 27344% below
- Medicare patients
- 132vs 19031% below
- Part D claims
- 701vs 3402.1 times
Medians across 224 gastroenterologists in Oregon with Dmand AI profiles that report each measure.
Dr. Zaman's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Zaman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zaman and other gastroenterologists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Atif Zaman treated 132 Medicare patients in 2024, average age 70
CMS counts 132 Medicare patients who saw Dr. Zaman in 2024. The largest group is 65 to 74, with 73 patients. 55% of them have high blood pressure, and 48% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.81, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Zaman's median patient age at 70, with 49% women.
Dr. Zaman's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Zaman's Medicare patients by sex, 2024
- Women7053%
- Men6247%
Chronic conditions among Dr. Zaman's Medicare patients, 2024
- High blood pressure55%
- High cholesterol48%
- Arthritis33%
- Diabetes31%
- Mood disorders23%
- Osteoporosis22%
- Chronic kidney disease21%
- Anxiety20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zaman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Atif Zaman wrote 781 Medicare Part D claims in 2024
In 2024, Dr. Zaman wrote 781 Medicare Part D claims for 155 patients. 91% of them were for generic drugs. CMS names the drug for 701 of them, across 15 drugs with 11 or more claims each, at $104,273 in total drug cost. In 2023, CMS named 851 claims across 17 drugs.
Dr. Zaman's Part D claims by kind of drug, 2024
- Generic712 claims91%
- Brand-name69 claims9%
Dr. Zaman's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Zaman's Part D claims, 2024
- Antibiotics2%14 of 781 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8512024: 70118%
Drugs named by CMS: 15 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Atif Zaman scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Zaman for performance year 2024, reported through an alternative payment model (APM). Dr. Zaman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Zaman as offering telehealth. CMS counts 24 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Zaman, more than 52% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Zaman's MIPS scores, performance year 2024
- 99of 100Final score
- 84.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Zaman ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 52nd percentile24 procedures
- Colonoscopy
- 44th percentile14 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Atif Zaman has 17 publications on record
Dmand AI links 17 papers to Dr. Zaman, published from 2010 to 2021. 2014 was the busiest year, with 2. The most frequent topics are Antiviral Agents, Hepatitis C, Chronic and Liver Cirrhosis. Dr. Zaman has published most often in J Clin Gastroenterol. Dr. Zaman's most frequent co-authors are Justine Hum, MD, Deron Trent Amador, MD and Robert Stephen Brown, MD.
Dr. Zaman's papers by year, 2010 to 2021
Topics Dr. Zaman writes about most
- Antiviral Agents
- Hepatitis C, Chronic
- Liver Cirrhosis
- Esophageal and Gastric Varices
- Gastrointestinal Hemorrhage
- Predictive Value of Tests
Dr. Zaman's most frequent co-authors
- Justine Hum, MD2 shared papers
- Deron Trent Amador, MD1 shared paper
- Robert Stephen Brown, MD1 shared paper
Recent publications by Dr. Zaman
Int J Drug Policy
See who Dr. Zaman researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zaman works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Atif Zaman received $60,374 in industry payments in 2016
CMS Open Payments shows 9 general payments to Dr. Zaman from 1 drug or device company in 2016. Consulting fees make up the largest share, 98% of the total. Bristol-Myers Squibb Company paid the most, $60,374.
General payments to Dr. Zaman by kind, 2016 to 2016
- Consulting fees$58,96898%
- Travel and lodging$1,0142%
- Food and beverage$3911%
Companies that paid Dr. Zaman the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Atif Zaman graduated from Tufts University School of Medicine
Dr. Zaman graduated from Tufts University School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Atif Zaman's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Atif Zaman
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Atif Zaman's NPI number?
Dr. Atif Zaman's NPI number is 1003821513. It was assigned on July 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Atif Zaman?
Dr. Atif Zaman is a gastroenterologist in Portland, Oregon. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Atif Zaman practice?
Dr. Zaman practices at 3181 SW Sam Jackson Park Road, Portland, OR 97239. Dr. Zaman's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dmand AI also links Dr. Zaman to 2 hospitals and 1 clinical lab.
What is Dr. Atif Zaman's office phone number?
The practice phone on file for Dr. Zaman is (503) 494-9000.
What is Dr. Atif Zaman's medical license number?
Dr. Zaman holds Oregon license MD19123.
Which hospitals is Dr. Atif Zaman affiliated with?
Dr. Zaman practices at OHSU Hospital in Portland, Oregon. Dr. Zaman is also affiliated with Adventist Health Portland. Dmand AI links Dr. Zaman to 2 more hospitals.
What medical group is Dr. Atif Zaman part of?
Dr. Zaman is linked to Oregon Health & Science University (OHSU).
Does Dr. Atif Zaman accept Medicare?
Yes. CMS data shows Dr. Zaman billed Medicare for 154 services in 2024, and Dr. Zaman accepts Medicare assignment.
Does Dr. Atif Zaman offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zaman as offering telehealth services.
What is Dr. Atif Zaman's MIPS score?
Dr. Zaman's MIPS final score for performance year 2024 is 99 out of 100, reported through an alternative payment model (APM).
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Atif Zaman see?
CMS counts 132 Medicare patients who saw Dr. Zaman in 2024, with an average age of 70.
What services does Dr. Atif Zaman bill to Medicare?
In 2024, Dr. Zaman's most billed Medicare services were office visit, established patient (99213), medicare service (G0500) and care management and other visits (99451).
Where did Dr. Atif Zaman go to medical school?
Dr. Zaman graduated from Tufts University School of Medicine in 1991.
What drugs does Dr. Atif Zaman prescribe most?
In 2024 Medicare Part D data, Dr. Zaman's most prescribed drugs by claims were Tacrolimus, Azathioprine and Ursodiol.
Has Dr. Atif Zaman received payments from drug or device companies?
CMS Open Payments shows $60,374 in general payments to Dr. Zaman from 1 company from 2016 to 2016. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Atif Zaman been practicing?
Dr. Zaman graduated from medical school in 1991, 35 years ago.
Does Dr. Atif Zaman do research?
Dmand AI links 17 publications to Dr. Zaman, published from 2010 to 2021.
Who does Dr. Atif Zaman publish with?
Dr. Zaman's most frequent co-authors are Justine Hum, MD (2 shared papers), Deron Trent Amador, MD (1 shared paper) and Robert Stephen Brown, MD (1 shared paper).
Selling to gastroenterology practices?
See gastroenterologists in Oregon by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card