Quick answers
- Where does William M. Jantsch see patients?
- Medicare's clinician data lists 2 practice locations, including Philadelphia, PA. Call before your visit to confirm the address.
- What is William M. Jantsch's specialty?
- Medicare lists Emergency Medicine as the primary specialty, and also Internal Medicine.
- Does William M. Jantsch accept Medicare assignment?
- Yes. Medicare's clinician data says William M. Jantsch accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for William M. Jantsch?
- (215) 999-3356, as listed in official Medicare / NPI Registry data.
- What is William M. Jantsch's NPI number?
- 1245382241. 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 M. Jantsch is enrolled with Medicare (CMS data updated 2026-10-02).
- 3356 Aramingo AvePhiladelphia, PA 19134 (215) 999‑3356
- 6060 Ridge Ave, Suite 100Philadelphia, PA 19128 (215) 999‑6060
Group practices
Medicare enrollment lists William M. Jantsch as a member of this group (CMS data updated 2026-10-02).
- On Demand Urgent Care Group PC101 clinicians in the group
Specialties
- Emergency Medicineprimary
- Internal Medicinealso
Other emergency medicine doctors in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245382241 |
| 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