JOHN WILLIAM STELZER MD
NPI 1225599004
Orthopaedic Surgery - Pediatric Orthopaedic Surgery in Philadelphia, PA
About John William Stelzer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN WILLIAM STELZER MD (NPI 1225599004) is an individual pediatric orthopaedic surgery provider in Philadelphia, Pennsylvania, licensed in Connecticut (79207) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in Hartford.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John William Stelzer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Stelzer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 601 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.
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.
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
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 Stelzer's NPI number?
The NPI number for John Stelzer is 1225599004. It was assigned to this individual provider in the NPPES registry on March 26, 2019.
Where is John Stelzer located?
John Stelzer practices at 3401 Civic Center Blvd Division Of Pediatric Orthopaedic Surgery, Philadelphia, PA 19104. The listed phone number is (267) 590-1527.
What is John Stelzer's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Pediatric Orthopaedic Surgery, with taxonomy code 207XP3100X.
Is John Stelzer enrolled in Medicare?
Yes. John Stelzer is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Stelzer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Stelzer reassigns Medicare benefits to Connecticut Children's Specialty Group, Inc. (Hartford, CT). The 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 Stelzer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Stelzer accept?
Health plans from Anthem Blue Cross and Blue Shield list John Stelzer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Stelzer was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# John William Stelzer, MD · NPI 1225599004
Pediatric Orthopaedic Surgery physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since March 26, 2019.
## Identity
- **NPI:** 1225599004 (Entity type: Individual)
- **Enumerated:** March 26, 2019
- **Primary specialty:** Orthopaedic Surgery - Pediatric Orthopaedic Surgery · taxonomy 207XP3100X
- **State license:** 79207 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 3401 CIVIC CENTER BLVD, DIVISION OF PEDIATRIC ORTHOPAEDIC SURGERY, Philadelphia, PA 19104
- **Phone:** (267) 590-1527
## 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:** Connecticut Children's Specialty Group, Inc. (NPI 1669448882, Hartford, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 6, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1225599004) · Data from the CMS NPPES public registry.