Quick answers
- Where does Gregory E. Halligan see patients?
- Medicare's clinician data lists 2 practice locations, including Philadelphia, PA. Call before your visit to confirm the address.
- What is Gregory E. Halligan's specialty?
- Medicare lists Pediatric Medicine as the primary specialty, and also Hematology/Oncology.
- Does Gregory E. Halligan accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory E. Halligan 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 Gregory E. Halligan?
- (215) 427-8363, as listed in official Medicare / NPI Registry data.
- What is Gregory E. Halligan's NPI number?
- 1881643013. 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 Gregory E. Halligan is enrolled with Medicare (CMS data updated 2026-10-02).
- 160 E Erie AvePhiladelphia, PA 19134
- 300 E Hunting Park Ave, St Christophers Ped Assoc Child ProtectionPhiladelphia, PA 19124 (215) 427‑8363
Group practices
Medicare enrollment lists Gregory E. Halligan as a member of this group (CMS data updated 2026-10-02).
- STC Pediatrics LLC69 clinicians in the group
Specialties
- Pediatric Medicineprimary
- Hematology/Oncologyalso
Other pediatricians in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881643013 |
| 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