Quick answers
- Which hospitals does Stephen C. O Connor work at?
- Medicare's official clinician data lists Stephen C. O Connor at 5 hospitals: Baystate Franklin Medical Center, Baystate Medical Center, Baystate Noble Hospital, Baystate Wing Hospital and The Cooley Dickinson Hospital Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen C. O Connor see patients?
- Medicare's clinician data lists 4 practice locations, including Greenfield, MA, Northampton, MA and Palmer, MA. Call before your visit to confirm the address.
- What is Stephen C. O Connor's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Stephen C. O Connor accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen C. O Connor 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 Stephen C. O Connor?
- (413) 773-2674, as listed in official Medicare / NPI Registry data.
- What is Stephen C. O Connor's NPI number?
- 1427083237. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen C. O Connor works
Medicare's Facility Affiliation Data lists Stephen C. O Connor at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baystate Franklin Medical CenterGreenfield, MA · Acute Care Hospital · CCN 220016
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · CCN 220077
- Baystate Noble HospitalWestfield, MA · Acute Care Hospital · CCN 220065
- Baystate Wing HospitalPalmer, MA · Acute Care Hospital · CCN 220030
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · CCN 220015
Practice locations
Addresses where Stephen C. O Connor is enrolled with Medicare (CMS data updated 2026-10-02).
- 164 High StGreenfield, MA 01301 (413) 773‑2674
- 325 B King StNorthampton, MA 01060 (413) 387‑4100
- 40 Wright StPalmer, MA 01069 (413) 284‑5241
- 759 Chestnut StSpringfield, MA 01107 (413) 827‑7400
Group practices
Medicare enrollment lists Stephen C. O Connor as a member of this group (CMS data updated 2026-10-02).
- Radiology and Imaging Inc59 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427083237 |
| 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