DR. CELIA GELLMAN MD MS
NPI 1235877259
Student in an Organized Health Care Education/Training Program in Queens, NY
About Dr. Celia Gellman Md Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CELIA GELLMAN MD MS (NPI 1235877259) is an individual student in an organized health care education/training program in Queens, New York and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS, is affiliated with John T Mather Memorial Hospital Of Port Jefferson, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Celia Gellman Md Ms is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Celia Gellman reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
Port Jefferson, NY 11777
- Reassigned Medicare billing, New York enrollment
- 255 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
John T Mather Memorial Hospital Of Port Jefferson
Acute Care Hospitals · Port Jefferson, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ELMHURST, NY 11373
ELMHURST, NY 11373
ELMHURST, NY 11373
QUEENS, NY 11373
ELMHURST, NY 11373
ELMHURST, NY 11373
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Celia Gellman's NPI number?
The NPI number for Celia Gellman is 1235877259. It was assigned to this individual provider in the NPPES registry on May 20, 2022.
Where is Celia Gellman located?
Celia Gellman practices at 79-01 Broadway Internal Medicine Gme Office, Queens, NY 11373. The listed phone number is (718) 334-3030.
What is Celia Gellman's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Celia Gellman enrolled in Medicare?
Yes. Celia Gellman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Celia Gellman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Celia Gellman reassigns Medicare benefits to 2 organizations: North Shore - Lij Medical PC (New Hyde Park, NY) and John T. Mather Memorial Hospital (Port Jefferson, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Celia Gellman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Celia Gellman affiliated with any hospitals?
According to CMS data, Celia Gellman is affiliated with John T Mather Memorial Hospital Of Port Jefferson.
When was this NPI record last updated?
The NPPES record for Celia Gellman was last updated on May 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Celia Gellman, MD MS · NPI 1235877259
Student in an Organized Health Care Education/Training Program provider in Queens, New York. Individual provider, active in the CMS NPPES registry since May 20, 2022.
## Identity
- **NPI:** 1235877259 (Entity type: Individual)
- **Enumerated:** May 20, 2022
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 79-01 BROADWAY, INTERNAL MEDICINE GME OFFICE, Queens, NY 11373
- **Phone:** (718) 334-3030
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY); John T. Mather Memorial Hospital (NPI 1467249334, Port Jefferson, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** May 20, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1235877259) · Data from the CMS NPPES public registry.