What is Atif Zaman's NPI number?

Atif Zaman's National Provider Identifier (NPI) is 1003821513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Atif Zaman's specialty?

Atif Zaman is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).

Where is Atif Zaman located?

Atif Zaman's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011.

What is Atif Zaman's phone number?

The practice phone number listed in the NPPES registry for Atif Zaman is (503) 494-4373.

Does Atif Zaman accept Medicare?

Atif Zaman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Atif Zaman's NPI active?

Yes — Atif Zaman's NPI (1003821513) is active in the NPPES registry as of the last update on 2007-07-10.

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Atif Zaman, MD

NPI 1003821513 · Gastroenterology Physician · Portland, OR

Atif Zaman, MD is a Gastroenterology Physician provider in Portland, OR (NPI 1003821513).

Provider details

NPI number: 1003821513
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: MD19123 (OR)

Practice location

3181 Sw Sam Jackson Park Rd

Portland, OR 97239-3011

Phone: (503) 494-4373

Street-level locationGet directions

More OR providers

Mailing address

3181 Sw Sam Jackson Park Rd

Portland, OR 97239-3011

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense MD19123 (OR)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(69/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
20 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
154 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500	36	$6
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	30	$66
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	27	$76
Telephone, Internet, Or Electronic Health Record Assessment and Management With Written Report By Consulting Physician, at Least 5 Minutes99451	18	$36
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Tacrolimus	160	40
Azathioprine	146	35
Ursodiol	85	15
Mycophenolate Mofetil	44	—
Omeprazole	41	—
Prednisone	36	11
Tenofovir Disoproxil Fumarate	34	—
Entecavir	30

Enumerated: 2006-07-31
Last updated: 2007-07-10

Frequently asked questions

What is Atif Zaman's NPI number?: Atif Zaman's National Provider Identifier (NPI) is 1003821513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Atif Zaman's specialty?: Atif Zaman is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
Where is Atif Zaman located?: Atif Zaman's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011.
What is Atif Zaman's phone number?: The practice phone number listed in the NPPES registry for Atif Zaman is (503) 494-4373.
Does Atif Zaman accept Medicare?: Atif Zaman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Atif Zaman's NPI active?: Yes — Atif Zaman's NPI (1003821513) is active in the NPPES registry as of the last update on 2007-07-10.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500	36	$6
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	30	$66
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	27	$76
Telephone, Internet, Or Electronic Health Record Assessment and Management With Written Report By Consulting Physician, at Least 5 Minutes99451	18	$36
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211

Drug

Part D claims (2024)

Beneficiaries

Tacrolimus

160

Azathioprine

146

Ursodiol

Mycophenolate Mofetil

—

Omeprazole

—

Prednisone

Tenofovir Disoproxil Fumarate

—

Entecavir

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)