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Pathology

Alireza Sepehr, MD

Sees patients in Portsmouth, NH · Dover, MA · Norwell, MA … · New Hampshire, Massachusetts

Summary

Dr. Alireza Sepehr, MD is a pathologist at 155 Borthwick Ave, Portsmouth, NH 03801. Phone: (978) 691-5690. Accepts Medicare assignment. In 2024, Alireza Sepehr had 11,221 Original Medicare patients and 23,380 services. NPI 1336171867. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Pathologist (Medicare lists Pathology)
  • Address: 155 Borthwick Ave, Portsmouth, NH 03801 · Directions (3 more locations)
  • Phone: (978) 691‑5690
  • Medicare: Accepts Medicare assignment
  • Group practice: Northeast Dermatology Associates PC (+2 more)
  • Medical school: graduated 1996 (30 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Alireza Sepehr, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Alireza Sepehr accept Medicare assignment?
Yes. Medicare's clinician data says Alireza Sepehr accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Alireza Sepehr see?
In 2024, CMS data shows 11,221 Original Medicare patients and 23,380 services for Alireza Sepehr. This counts Original Medicare only and measures volume, not quality.
What is Alireza Sepehr's NPI number?
1336171867. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Alireza Sepehr, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients11,221
Services billed to Medicare23,380
Different services or procedures10
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Pathology examination of tissue using a microscope, intermediate complexity (88305)19,618 services
  2. Special stained specimen slides to examine tissue, each additional procedure (88341)1,101 services
  3. Special stained specimen slides to examine tissue, initial procedure (88342)1,042 services
  4. Special stained specimen slides to identify organisms including interpretation and report (88312)1,027 services
  5. Pathology examination of tissue using a microscope, moderately low complexity (88304)433 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure70%
  • Arthritis44%
  • Ischemic heart disease24%
  • Anxiety22%
  • Chronic kidney disease20%

Practice locations

Addresses where Alireza Sepehr is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alireza Sepehr as a member of these groups (CMS data updated October 2, 2026).

  • Northeast Dermatology Associates PC85 clinicians in the group
  • Massachusetts Dermatology Associates, P.C.15 clinicians in the group
  • Massderm Billing PC14 clinicians in the group

Specialties

Find other Pathology doctors in New Hampshire →

Other pathologists in New Hampshire

Clinicians with the same Medicare primary specialty in New Hampshire — not a recommendation.

All pathologists in New Hampshire →

Other clinicians in Northeast Dermatology Associates PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1996 (30 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1336171867
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians