William Baker, D.O.
NPI 1134743297 · Orthopaedic Surgery Physician · Lancaster, PA
William Baker, D.O. is a Orthopaedic Surgery Physician provider in Lancaster, PA (NPI 1134743297).
Provider details
- NPI number
- 1134743297
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-06-04
- Last updated
- 2026-06-04
- Certified
- 2026-06-04
Frequently asked questions
- What is William Baker's NPI number?
- William Baker's National Provider Identifier (NPI) is 1134743297, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Baker's specialty?
- William Baker is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Baker located?
- William Baker's practice location on file with NPPES is 538 N Queen St, Lancaster, PA 17603-3046.
- What is William Baker's phone number?
- The practice phone number listed in the NPPES registry for William Baker is (717) 393-1900.
- Is William Baker's NPI active?
- Yes — William Baker's NPI (1134743297) is active in the NPPES registry as of the last update on 2026-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.