Quick answers
- Which hospitals does Michael J. Greenberg work at?
- Medicare's official clinician data lists Michael J. Greenberg at 1 hospital: Thomas Jefferson University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Greenberg see patients?
- Medicare's clinician data lists 6 practice locations, including Philadelphia, PA. Call before your visit to confirm the address.
- What is Michael J. Greenberg's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Michael J. Greenberg accept Medicare assignment?
- Yes. Medicare's clinician data says Michael J. Greenberg 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 Michael J. Greenberg offer telehealth?
- Medicare's clinician data says Michael J. Greenberg offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Michael J. Greenberg?
- (800) 533-3669, as listed in official Medicare / NPI Registry data.
- What is Michael J. Greenberg's NPI number?
- 1548264120. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Greenberg works
Medicare's Facility Affiliation Data lists Michael J. Greenberg 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 Michael J. Greenberg is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1101 Chestnut StPhiladelphia, PA 19107 (800) 533‑3669
- 1101 Market St, Fl 19Philadelphia, PA 19107
- 111 S 11th StPhiladelphia, PA 19107
- 834 Walnut St, Suite 110Philadelphia, PA 19107
- 925 Chestnut StPhiladelphia, PA 19107
Group practices
Medicare enrollment lists Michael J. Greenberg as a member of this group (CMS data updated 2026-10-02).
- Jefferson University Physicians1,531 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Philadelphia
Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1548264120 |
| 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