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Internal Medicine

David S. Alnajjar, MD

Works at hospitals in Royal Oak, MI · Troy, MI · Michigan

Summary

Dr. David S. Alnajjar, MD is an internal medicine doctor at 34580 Dequindre Rd, Sterling Heights, MI 48310. Phone: (586) 977-9066. Accepts Medicare assignment. In 2024, David S. Alnajjar had 196 Original Medicare patients and 1,497 services. NPI 1386625770. 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: 34580 Dequindre Rd, Sterling Heights, MI 48310 · Directions
  • Phone: (586) 977‑9066
  • Medicare: Accepts Medicare assignment
  • Hospitals: Beaumont Hospital Royal Oak, Beaumont Hospital, Troy
  • Group practice: Elite Internal Medicine PC (+1 more)
  • Medical school: graduated 1976 (50 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about David S. Alnajjar, 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 David S. Alnajjar accept Medicare assignment?
Yes. Medicare's clinician data says David S. Alnajjar 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 David S. Alnajjar see?
In 2024, CMS data shows 196 Original Medicare patients and 1,497 services for David S. Alnajjar. This counts Original Medicare only and measures volume, not quality.
What is David S. Alnajjar's NPI number?
1386625770. 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 David S. Alnajjar, 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 patients196
Services billed to Medicare1,497
Different services or procedures55
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)295 services
  2. Insertion of needle into vein for collection of blood sample (36415)293 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)192 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)103 services
  5. 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's (G2211)103 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%
  • Diabetes44%
  • Arthritis41%
  • Ischemic heart disease33%
  • Chronic kidney disease21%

Hospitals where David S. Alnajjar works

Medicare's Facility Affiliation Data lists David S. Alnajjar 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.

  • Beaumont Hospital Royal OakRoyal Oak, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230130
  • Beaumont Hospital, TroyTroy, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230269

Practice locations

Addresses where David S. Alnajjar is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists David S. Alnajjar as a member of these groups (CMS data updated October 2, 2026).

  • Elite Internal Medicine PC3 clinicians in the group
  • Elite Long Term Care PLLC3 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Sterling Heights

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

All internal medicine doctors in Sterling Heights →

Other clinicians in Elite Internal Medicine PC

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

Clinician information

CredentialMD
Graduation year1976 (50 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1386625770
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