GEORGE R. STEFANOS M.D. P.C
NPI 1609153519
Internal Medicine in Spencerport, NY
About George R. Stefanos M.d. P.c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GEORGE R. STEFANOS M.D. P.C (NPI 1609153519) is a healthcare organization registered as an internal medicine in Spencerport, New York and active in the NPI registry since November 2011. The organization lists George R. Stefanos, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
George R. Stefanos M.d. P.c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by January 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to George R. Stefanos M.D. P.C, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 George R. Stefanos M.D. P.C's NPI number?
The NPI number for George R. Stefanos M.D. P.C is 1609153519. It was assigned to this organization in the NPPES registry on November 5, 2011.
Where is George R. Stefanos M.D. P.C located?
George R. Stefanos M.D. P.C is located at 21 Union Hill Dr, Spencerport, NY 14559. The listed phone number is (585) 349-1146.
What is George R. Stefanos M.D. P.C's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is George R. Stefanos M.D. P.C enrolled in Medicare?
Yes. George R. Stefanos M.D. P.C is registered in the Medicare PECOS enrollment system.
When is George R. Stefanos M.D. P.C's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (New York, Clinic/Group Practice) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through George R. Stefanos M.D. P.C?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to George R. Stefanos M.D. P.C, in Internal Medicine and Nurse Practitioner. A 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 the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for George R. Stefanos M.D. P.C was last updated on November 5, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# George R. Stefanos M.d. P.c · NPI 1609153519
Internal Medicine organization in Spencerport, New York. Organization record, active in the CMS NPPES registry since November 5, 2011.
## Identity
- **NPI:** 1609153519 (Entity type: Organization)
- **Enumerated:** November 5, 2011
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** George Stefanos, PRESIDENT
## Practice location
- **Address:** 21 UNION HILL DR, Spencerport, NY 14559-1965
- **Phone:** (585) 349-1146
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (Non-DME Part B, New York, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (1), Nurse Practitioner (1); 2 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 5, 2011
- **Other identifiers:** Medicaid 01754470 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1609153519) · Data from the CMS NPPES public registry.