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Internal Medicine

Alireza Pirestani, DO

Works at hospitals in Newark, DE · Delaware

Summary

Dr. Alireza Pirestani, DO is an internal medicine doctor at 1802 W 4th St, Wilmington, DE 19805. Phone: (302) 655-5576. Accepts Medicare assignment. In 2024, Alireza Pirestani had 25 Original Medicare patients and 30 services. NPI 1962632364. 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: 1802 W 4th St, Wilmington, DE 19805 · Directions
  • Phone: (302) 655‑5576
  • Medicare: Accepts Medicare assignment
  • Hospital: Christiana Hospital
  • Group practice: Westside Family Healthcare, Inc.
  • Medical school: Philadelphia College Of Osteopathic Medicine · graduated 2009 (17 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Alireza Pirestani, 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 Pirestani accept Medicare assignment?
Yes. Medicare's clinician data says Alireza Pirestani 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 Pirestani see?
In 2024, CMS data shows 25 Original Medicare patients and 30 services for Alireza Pirestani. This counts Original Medicare only and measures volume, not quality.
What is Alireza Pirestani's NPI number?
1962632364. 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 Pirestani, 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 patients25
Services billed to Medicare30
Different services or procedures5
Participating Medicare providerYes
Average age of these patients68

Most frequent services

  1. Hemoglobin a1c level (83036)14 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 blood pressure72%
  • Diabetes72%
  • High cholesterol64%

Hospitals where Alireza Pirestani works

Medicare's Facility Affiliation Data lists Alireza Pirestani 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.

  • Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001

Practice locations

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

Group practices

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

  • Westside Family Healthcare, Inc.57 clinicians in the group

Specialties

Find other Internal Medicine doctors in Delaware →

Other internal medicine doctors in Wilmington

Clinicians with the same Medicare primary specialty in Wilmington, DE — not a recommendation.

All internal medicine doctors in Wilmington →

Other clinicians in Westside Family Healthcare, Inc.

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

Clinician information

CredentialDO
Medical schoolPhiladelphia College Of Osteopathic Medicine
Graduation year2009 (17 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1962632364
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