Stephen Ludwig, M.D.
NPI 1932123114 · Pediatrics Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Ludwig, M.D. is a Pediatrics Physician provider in Philadelphia, PA (NPI 1932123114).
Provider details
- NPI number
- 1932123114
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD015203E (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2006-07-27
- Last updated
- 2015-04-08
Frequently asked questions
- What is Stephen Ludwig's NPI number?
- Stephen Ludwig's National Provider Identifier (NPI) is 1932123114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Ludwig's specialty?
- Stephen Ludwig is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Ludwig located?
- Stephen Ludwig's practice location on file with NPPES is 3550 Market St Fl 4, Philadelphia, PA 19104-3368.
- What is Stephen Ludwig's phone number?
- The practice phone number listed in the NPPES registry for Stephen Ludwig is (215) 590-2178.
- Does Stephen Ludwig accept Medicare?
- Stephen Ludwig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Ludwig's NPI active?
- Yes — Stephen Ludwig's NPI (1932123114) is active in the NPPES registry as of the last update on 2015-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.