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Hospitalist

Mahmoud S. Abdelhadi, MD

Works at hospitals in Derby, CT · New Haven, CT · Connecticut

Summary

Dr. Mahmoud S. Abdelhadi, MD is a hospitalist at 1450 Chapel St, New Haven, CT 06511. Phone: (203) 789-3029. Accepts Medicare assignment. In 2024, Mahmoud S. Abdelhadi had 42 Original Medicare patients and 42 services. NPI 1376116574. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Mahmoud S. Abdelhadi, 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 Mahmoud S. Abdelhadi accept Medicare assignment?
Yes. Medicare's clinician data says Mahmoud S. Abdelhadi 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 Mahmoud S. Abdelhadi see?
In 2024, CMS data shows 42 Original Medicare patients and 42 services for Mahmoud S. Abdelhadi. This counts Original Medicare only and measures volume, not quality.
What is Mahmoud S. Abdelhadi's NPI number?
1376116574. 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 Mahmoud S. Abdelhadi, 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 patients42
Services billed to Medicare42
Different services or procedures5
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)26 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)12 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%
  • Anxiety64%
  • Depression57%
  • Chronic kidney disease52%
  • Arthritis48%

Hospitals where Mahmoud S. Abdelhadi works

Medicare's Facility Affiliation Data lists Mahmoud S. Abdelhadi 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.

  • Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
  • Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022

Practice locations

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

Group practices

Medicare enrollment lists Mahmoud S. Abdelhadi as a member of this group (CMS data updated October 2, 2026).

  • Northeast Medical Group Inc1,360 clinicians in the group

Specialties

Find other Hospitalist doctors in Connecticut →

Other hospitalists in New Haven

Clinicians with the same Medicare primary specialty in New Haven, CT — not a recommendation.

All hospitalists in New Haven →

Other clinicians in Northeast Medical Group Inc

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

Clinician information

CredentialMD
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1376116574
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