DR. JOHN L. HOLUP D.O.
NPI 1326010125
Surgery in Williamsport, PA
About Dr. John L. Holup D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN L. HOLUP D.O. (NPI 1326010125) is an individual surgery provider in Williamsport, Pennsylvania, licensed in Pennsylvania (OS007311L) and active in the NPI registry since February 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)
Dr. John L. Holup D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Holup reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middletown, NY 10940
- Reassigned Medicare billing, New York enrollment
- 281 clinicians in this Medicare group
Maywood, NJ 07607
- Reassigned Medicare billing, New Jersey and New York enrollments
- Also billed through NPI 1073064689 (New York)
- 8 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 17
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 17701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILLIAMSPORT, PA 17701
WILLIAMSPORT, PA 17701
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 John Holup's NPI number?
The NPI number for John Holup is 1326010125. It was assigned to this individual provider in the NPPES registry on February 6, 2006.
Where is John Holup located?
John Holup practices at 1100 Grampian Blvd, Williamsport, PA 17701. The listed phone number is (570) 326-8550.
What is John Holup's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is John Holup enrolled in Medicare?
Yes. John Holup is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Holup's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Holup reassigns Medicare benefits to 2 organizations: Middletown Medical PC (Middletown, NY) and Robert Marriott Medical Corp (Maywood, NJ). 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 John Holup'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 John Holup was last updated on August 9, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. John L. Holup, D.O. · NPI 1326010125
Surgery physician in Williamsport, Pennsylvania. Individual provider, active in the CMS NPPES registry since February 6, 2006.
## Identity
- **NPI:** 1326010125 (Entity type: Individual)
- **Enumerated:** February 6, 2006
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** OS007311L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1100 GRAMPIAN BLVD, Williamsport, PA 17701-1909
- **Phone:** (570) 326-8550
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Middletown Medical PC (NPI 1902855828, Middletown, NY); Robert Marriott Medical Corp (NPI 1003367558, Maywood, NJ) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 9, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1326010125) · Data from the CMS NPPES public registry.