Quick answers
- Where does William F. Baker see patients?
- Medicare's clinician data lists 2 practice locations, including Lancaster, PA and Philadelphia, PA. Call before your visit to confirm the address.
- What is William F. Baker's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does William F. Baker accept Medicare assignment?
- Medicare's clinician data says William F. Baker may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is William F. Baker's NPI number?
- 1134743297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William F. Baker is enrolled with Medicare (CMS data updated 2026-10-02).
- 538 N Queen St, Suite 200Lancaster, PA 17603
- PO BoxPhiladelphia, PA 19182
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Rowan University School Of Osteopathic Medicine |
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1134743297 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians