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Internal Medicine

Hussam Mahmood, DO

Works at hospitals in Harrisburg, PA · Pennsylvania

Summary

Dr. Hussam Mahmood, DO is an internal medicine doctor at 36 S River Rd, Unit 1, Halifax, PA 17032. Phone: (717) 827-3428. Accepts Medicare assignment. In 2024, Hussam Mahmood had 55 Original Medicare patients and 102 services. NPI 1356911655. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 36 S River Rd, Unit 1, Halifax, PA 17032 · Directions
  • Phone: (717) 827‑3428
  • Medicare: Accepts Medicare assignment
  • Hospital: UPMC Pinnacle Hospitals
  • Group practice: Family Practice Center PC
  • Medical school: West Virginia School Of Osteopathic Medicine · graduated 2021 (5 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Hussam Mahmood, 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 Hussam Mahmood accept Medicare assignment?
Yes. Medicare's clinician data says Hussam Mahmood 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 Hussam Mahmood see?
In 2024, CMS data shows 55 Original Medicare patients and 102 services for Hussam Mahmood. This counts Original Medicare only and measures volume, not quality.
What is Hussam Mahmood's NPI number?
1356911655. 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 Hussam Mahmood, 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 patients55
Services billed to Medicare102
Different services or procedures22
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)46 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 pressure69%
  • Arthritis42%
  • Ischemic heart disease27%
  • Chronic kidney disease25%
  • Diabetes24%

Hospitals where Hussam Mahmood works

Medicare's Facility Affiliation Data lists Hussam Mahmood at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

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

Group practices

Medicare enrollment lists Hussam Mahmood as a member of this group (CMS data updated October 2, 2026).

  • Family Practice Center PC361 clinicians in the group

Specialties

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Pennsylvania

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

All internal medicine doctors in Pennsylvania →

Other clinicians in Family Practice Center PC

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

Clinician information

CredentialDO
Medical schoolWest Virginia School Of Osteopathic Medicine
Graduation year2021 (5 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1356911655
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians