Quick answers
- Which hospitals does James D. O'Shea work at?
- Medicare's official clinician data lists James D. O'Shea at 4 hospitals: Beth Israel Deaconess Medical Center, Cambridge Health Alliance, Melrosewakefield Healthcare and Mount Auburn Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James D. O'Shea see patients?
- Medicare's clinician data lists 2 practice locations, including Cambridge, MA and Somerville, MA. Call before your visit to confirm the address.
- What is James D. O'Shea's specialty?
- Medicare lists Medical Oncology as the primary specialty.
- Does James D. O'Shea accept Medicare assignment?
- Yes. Medicare's clinician data says James D. O'Shea 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 James D. O'Shea offer telehealth?
- Medicare's clinician data says James D. O'Shea offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James D. O'Shea?
- (617) 665-1000, as listed in official Medicare / NPI Registry data.
- What is James D. O'Shea's NPI number?
- 1962564153. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James D. O'Shea works
Medicare's Facility Affiliation Data lists James D. O'Shea at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · CCN 220086
- Cambridge Health AllianceCambridge, MA · Acute Care Hospital · CCN 220011
- Melrosewakefield HealthcareMelrose, MA · Acute Care Hospital · CCN 220070
- Mount Auburn HospitalCambridge, MA · Acute Care Hospital · CCN 220002
Practice locations
Addresses where James D. O'Shea is enrolled with Medicare (CMS data updated 2026-10-02).
- 1493 Cambridge StCambridge, MA 02139 (617) 665‑1000
- 230 Highland AveSomerville, MA 02143 (617) 591‑4500
Group practices
Medicare enrollment lists James D. O'Shea as a member of this group (CMS data updated 2026-10-02).
- Cambridge Public Health Commission656 clinicians in the group
Specialties
- Medical Oncologyprimary
Other oncologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Rochester School Of Medicine And Dentistry |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1962564153 |
| 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