Quick answers
- Which hospitals does William Green work at?
- Medicare's official clinician data lists William Green at 3 hospitals: Chester County Hospital, Hospital of Univ of Pennsylvania and Pennsylvania Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Green see patients?
- Medicare's clinician data lists 26 practice locations, including Berwyn, PA, Radnor, PA and St Davids, PA. Call before your visit to confirm the address.
- What is William Green's specialty?
- Medicare lists Radiation Oncology as the primary specialty, and also Diagnostic Radiology.
- Does William Green accept Medicare assignment?
- Yes. Medicare's clinician data says William Green 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 William Green offer telehealth?
- Medicare's clinician data says William Green offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William Green?
- (215) 893-7246, as listed in official Medicare / NPI Registry data.
- What is William Green's NPI number?
- 1205192747. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Green works
Medicare's Facility Affiliation Data lists William Green at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Chester County HospitalWest Chester, PA · Acute Care Hospital · CCN 390179
- Hospital of Univ of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
- Pennsylvania HospitalPhiladelphia, PA · Acute Care Hospital · CCN 390226
Practice locations
Addresses where William Green is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 26; the Medicare profile lists all.
- 1001 Chesterbrook BlvdBerwyn, PA 19312
- 1001 Chesterbrook Blvd 3rd Fl W, Pain Medicine Valley ForgeBerwyn, PA 19312 (215) 893‑7246
- 1001 Chesterbrook Blvd 3rd FloorBerwyn, PA 19312 (610) 576‑7500
- 145 King of Prussia RdRadnor, PA 19087
- 145 King of Prussia Rd, Suite 203St Davids, PA 19087 (610) 902‑4856
Group practices
Medicare enrollment lists William Green as a member of this group (CMS data updated 2026-10-02).
- University of Penn - Medical Group3,505 clinicians in the group
Specialties
- Radiation Oncologyprimary
- Diagnostic Radiologyalso
Other radiation oncologists in Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1205192747 |
| 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