GREGORY G BILLY MD
NPI 1164486155
Physical Medicine & Rehabilitation in State College, PA
About Gregory G Billy Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY G BILLY MD (NPI 1164486155) is an individual physical medicine & rehabilitation provider in State College, Pennsylvania, licensed in Pennsylvania (MD061958L) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Mount Nittany Medical Center, and is a graduate of Pennsylvania State University College Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Gregory G Billy Md 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 Gregory Billy reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
State College, PA 16803
- Reassigned Medicare billing, Pennsylvania enrollment
- 393 clinicians in this Medicare group
Mechanicsburg, PA 17050
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,216 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.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Nittany Medical Center
Acute Care Hospitals · State College, PAMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STATE COLLEGE, PA 16803
STATE COLLEGE, PA 16803
STATE COLLEGE, PA 16803
STATE COLLEGE, PA 16803
STATE COLLEGE, PA 16803
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 Gregory Billy's NPI number?
The NPI number for Gregory Billy is 1164486155. It was assigned to this individual provider in the NPPES registry on April 14, 2006.
Where is Gregory Billy located?
Gregory Billy practices at 143 Hospital Drive Ste 112, State College, PA 16803. The listed phone number is (800) 233-4082.
What is Gregory Billy's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Gregory Billy enrolled in Medicare?
Yes. Gregory Billy 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 Gregory Billy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Billy reassigns Medicare benefits to 2 organizations: Mount Nittany Medical Center Health Services Inc (State College, PA) and Milton S Hershey Medical Center Physicians Group (Mechanicsburg, PA). 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 Gregory Billy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gregory Billy affiliated with any hospitals?
According to CMS data, Gregory Billy is affiliated with Mount Nittany Medical Center.
When was this NPI record last updated?
The NPPES record for Gregory Billy was last updated on July 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.