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Ophthalmology

James G. Chelnis, MD

Sees patients in Basking Ridge, NJ · New York, NY · Staten Island, NY … · New Jersey, New York

Summary

Dr. James G. Chelnis, MD is an ophthalmologist at 12 Ridge St, Basking Ridge, NJ 07920. Phone: (212) 484-9707. Accepts Medicare assignment. In 2024, James G. Chelnis had 118 Original Medicare patients and 1,512 services. NPI 1952612913. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Ophthalmologist (Medicare lists Ophthalmology)
  • Address: 12 Ridge St, Basking Ridge, NJ 07920 · Directions (3 more locations)
  • Phone: (212) 484‑9707
  • Medicare: Accepts Medicare assignment
  • Group practice: James Chelnis MD PC (+1 more)
  • Medical school: State University Of New York At Buffalo School Of Medicine · graduated 2010 (16 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about James G. Chelnis, 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 James G. Chelnis accept Medicare assignment?
Yes. Medicare's clinician data says James G. Chelnis 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 James G. Chelnis see?
In 2024, CMS data shows 118 Original Medicare patients and 1,512 services for James G. Chelnis. This counts Original Medicare only and measures volume, not quality.
What is James G. Chelnis's NPI number?
1952612913. 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 James G. Chelnis, 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 patients118
Services billed to Medicare1,512
Different services or procedures50
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Photography of content of eyes (92285)161 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)52 services
  3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)50 services
  4. Insertion of probe into nasal tear duct (68810)29 services
  5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)27 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%
  • High blood pressure57%
  • Arthritis48%
  • Anxiety33%
  • Osteoporosis30%
  • Diabetes25%

Practice locations

Addresses where James G. Chelnis is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists James G. Chelnis as a member of these groups (CMS data updated October 2, 2026).

  • James Chelnis MD PC2 clinicians in the group
  • New Jersey Oculoplastic Services, LLC2 clinicians in the group

Specialties

Find other Ophthalmology doctors in New Jersey →

Other ophthalmologists in New Jersey

Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.

All ophthalmologists in New Jersey →

Clinician information

CredentialMD
Medical schoolState University Of New York At Buffalo School Of Medicine
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1952612913
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians