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Gastroenterology

Mustafa Alnounou, MD

Works at hospitals in Flint, MI · Michigan

Summary

Dr. Mustafa Alnounou, MD is a gastroenterologist at 5202 Miller Rd, Flint, MI 48507. Phone: (810) 720-1600. Accepts Medicare assignment. In 2024, Mustafa Alnounou had 620 Original Medicare patients and 2,742 services. NPI 1235165481. 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: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 5202 Miller Rd, Flint, MI 48507 · Directions (1 more location)
  • Phone: (810) 720‑1600
  • Medicare: Accepts Medicare assignment
  • Hospital: McLaren Flint
  • Medical school: graduated 1992 (34 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Mustafa Alnounou, 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 Mustafa Alnounou accept Medicare assignment?
Yes. Medicare's clinician data says Mustafa Alnounou 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 Mustafa Alnounou see?
In 2024, CMS data shows 620 Original Medicare patients and 2,742 services for Mustafa Alnounou. This counts Original Medicare only and measures volume, not quality.
What is Mustafa Alnounou's NPI number?
1235165481. 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 Mustafa Alnounou, 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 patients620
Services billed to Medicare2,742
Different services or procedures49
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)1,207 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)401 services
  3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)336 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)138 services
  5. Biopsy of large bowel using a flexible endoscope (45380)133 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 pressure75%
  • High cholesterol75%
  • Arthritis54%
  • Ischemic heart disease47%
  • Diabetes46%
  • Chronic kidney disease44%

Hospitals where Mustafa Alnounou works

Medicare's Facility Affiliation Data lists Mustafa Alnounou 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.

  • McLaren FlintFlint, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230141

Practice locations

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

Specialties

Find other Gastroenterology doctors in Michigan →

Other gastroenterologists in Flint

Clinicians with the same Medicare primary specialty in Flint, MI — not a recommendation.

All gastroenterologists in Flint →

Clinician information

CredentialMD
Graduation year1992 (34 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235165481
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