WILLIAM DIEFENBACH
NPI 1740268812
Neurological Surgery in Erie, PA
About William Diefenbach NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM DIEFENBACH (NPI 1740268812) is an individual neurological surgery provider in Erie, Pennsylvania, licensed in Pennsylvania (MD050177L) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
William Diefenbach is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show William Diefenbach reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Erie, PA 16506
- Reassigned Medicare billing, Pennsylvania enrollment
- 9 clinicians in this Medicare group
Erie, PA 16505
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,881 clinicians in this Medicare group
Erie, PA 16550
- Reassigned Medicare billing, Pennsylvania enrollment
- 962 clinicians in this Medicare group
Jamestown, NY 14701
- Reassigned Medicare billing, New York and Pennsylvania enrollments
- 233 clinicians in this Medicare group
Carrolltown, PA 15722
- Reassigned Medicare billing, Pennsylvania enrollment
- 771 clinicians in this Medicare group
Altoona, PA 16602
- Reassigned Medicare billing, Pennsylvania enrollment
- 338 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 16506 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ERIE, PA 16506
ERIE, PA 16506
ERIE, PA 16506
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 William Diefenbach's NPI number?
The NPI number for William Diefenbach is 1740268812. It was assigned to this individual provider in the NPPES registry on January 9, 2006.
Where is William Diefenbach located?
William Diefenbach practices at 2374 Village Common Dr Ste 100, Erie, PA 16506. The listed phone number is (814) 833-7246.
What is William Diefenbach's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is William Diefenbach enrolled in Medicare?
Yes. William Diefenbach is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for William Diefenbach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Diefenbach reassigns Medicare benefits to 6 organizations: Tri-State Pain Institute LLC (Erie, PA), Allegheny Clinic (Erie, PA), Regional Health Services Inc (Erie, PA), Great Lakes Physician Practice PC (Jamestown, NY), Dlp Conemaugh Physician Practices LLC (Carrolltown, PA) and 1 more organization, listed in the Medicare section above. 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 William Diefenbach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Diefenbach was last updated on March 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.