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Orthopedic Surgery

Firas M. Chamas, MD

Works at hospitals in New York, NY · New York

Summary

Dr. Firas M. Chamas, MD is an orthopedic surgeon at 100 E 77th St, New York, NY 10075. Phone: (212) 434-2000. Accepts Medicare assignment. In 2024, Firas M. Chamas had 265 Original Medicare patients and 2,071 services. NPI 1205077229. 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: Orthopedic surgeon (Medicare lists Orthopedic Surgery)
  • Address: 100 E 77th St, New York, NY 10075 · Directions (2 more locations)
  • Phone: (212) 434‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Lenox Hill Hospital
  • Group practice: Stephen J Nicholas MD PC
  • Medical school: New York Medical College · graduated 2005 (21 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Firas M. Chamas, 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 Firas M. Chamas accept Medicare assignment?
Yes. Medicare's clinician data says Firas M. Chamas 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 Firas M. Chamas see?
In 2024, CMS data shows 265 Original Medicare patients and 2,071 services for Firas M. Chamas. This counts Original Medicare only and measures volume, not quality.
What is Firas M. Chamas's NPI number?
1205077229. 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 Firas M. Chamas, 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 patients265
Services billed to Medicare2,071
Different services or procedures47
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Injection, methylprednisolone acetate, 1 mg (J1010)1,366 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)335 services
  3. X-ray of lower and sacral spine, 2-3 views (72100)122 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)63 services
  5. X-ray of upper spine, 2-3 views (72040)60 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 cholesterol75%
  • Arthritis75%
  • High blood pressure67%
  • Ischemic heart disease34%
  • Diabetes31%
  • Osteoporosis28%

Hospitals where Firas M. Chamas works

Medicare's Facility Affiliation Data lists Firas M. Chamas 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.

  • Lenox Hill HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330119

Practice locations

Addresses where Firas M. Chamas is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Firas M. Chamas as a member of this group (CMS data updated October 2, 2026).

  • Stephen J Nicholas MD PC28 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in New York →

Other orthopedic surgeons in New York

Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.

All orthopedic surgeons in New York →

Other clinicians in Stephen J Nicholas MD PC

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

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1205077229
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