Quick answers
- Where does Alison J. Leff see patients?
- Medicare's clinician data lists 3 practice locations, including Boothwyn, PA, Hatboro, PA and Bryn Mawr, PA. Call before your visit to confirm the address.
- What is Alison J. Leff's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Alison J. Leff accept Medicare assignment?
- Yes. Medicare's clinician data says Alison J. Leff 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 Alison J. Leff?
- (610) 558-7840, as listed in official Medicare / NPI Registry data.
- What is Alison J. Leff's NPI number?
- 1568499473. 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 Alison J. Leff is enrolled with Medicare (CMS data updated 2026-10-02).
- 1194 Naamans Creek RdBoothwyn, PA 19060 (610) 558‑7840
- 3485 Davisville RdHatboro, PA 19040 (215) 830‑0400
- 825 Old Lancaster Rd, Suite 320Bryn Mawr, PA 19010 (610) 527‑3800
Group practices
Medicare enrollment lists Alison J. Leff as a member of these groups (CMS data updated 2026-10-02).
- Bryn Mawr Medical Specialists Association134 clinicians in the group
- Alignmed Medical Group PC57 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568499473 |
| 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