Quick answers
- Which hospitals does Gregory A. Seidel work at?
- Medicare's official clinician data lists Gregory A. Seidel at 1 hospital: Thomas Jefferson University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Seidel see patients?
- Medicare's clinician data lists 1 practice location in Philadelphia, PA. Call before your visit to confirm the address.
- What is Gregory A. Seidel's specialty?
- Medicare lists Clinical Psychologist as the primary specialty.
- Does Gregory A. Seidel accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Seidel 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.
- Does Gregory A. Seidel offer telehealth?
- Medicare's clinician data says Gregory A. Seidel offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory A. Seidel?
- (215) 955-7000, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Seidel's NPI number?
- 1447602982. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Seidel works
Medicare's Facility Affiliation Data lists Gregory A. Seidel at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Thomas Jefferson University HospitalPhiladelphia, PA · Acute Care Hospital · CCN 390174
Practice locations
Addresses where Gregory A. Seidel is enrolled with Medicare (CMS data updated 2026-10-02).
- 909 Walnut St, 2nd FloorPhiladelphia, PA 19107 (215) 955‑7000
Group practices
Medicare enrollment lists Gregory A. Seidel as a member of this group (CMS data updated 2026-10-02).
- Jefferson University Physicians1,531 clinicians in the group
Specialties
- Clinical Psychologistprimary
Find other clinicians: Clinical Psychologist, Pennsylvania →
Other clinical psychologists in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Clinician information
| Credential | CP |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447602982 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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