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General Surgery

John Anagnostakos, MD

Works at hospitals in Belleville, NJ · Montclair, NJ · Morristown, NJ … · New Jersey

Summary

Dr. John Anagnostakos, MD is a general surgeon at 1 Clara Maass Dr, Belleville, NJ 07109. Phone: (973) 450-2000. Accepts Medicare assignment. NPI 1255794269. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about John Anagnostakos, 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 John Anagnostakos accept Medicare assignment?
Yes. Medicare's clinician data says John Anagnostakos 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.
What is John Anagnostakos's NPI number?
1255794269. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John Anagnostakos works

Medicare's Facility Affiliation Data lists John Anagnostakos 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 John Anagnostakos is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists John Anagnostakos as a member of these groups (CMS data updated October 2, 2026).

  • Barnabas Health Medical Group, PC262 clinicians in the group
  • CCG Medical Group LLC24 clinicians in the group

Specialties

Find other General Surgery doctors in New Jersey →

Other general surgeons in Belleville

Clinicians with the same Medicare primary specialty in Belleville, NJ — not a recommendation.

All general surgeons in Belleville →

Other clinicians in Barnabas Health Medical Group, PC

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

Clinician information

CredentialMD
Medical schoolTemple University School Of Medicine
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1255794269
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians