Quick answers
- Which hospitals does John McCormac work at?
- Medicare's official clinician data lists John McCormac at 5 hospitals: Ashtabula County Medical Center, Cleveland Clinic, Crystal Clinic Orthopaedic Center, Hillcrest Hospital and Union Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John McCormac see patients?
- Medicare's clinician data lists 7 practice locations, including Mansfield, OH, Wooster, OH and Ashtabula, OH. Call before your visit to confirm the address.
- What is John McCormac's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does John McCormac accept Medicare assignment?
- Yes. Medicare's clinician data says John McCormac 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 John McCormac?
- (330) 287-4500, as listed in official Medicare / NPI Registry data.
- What is John McCormac's NPI number?
- 1235131996. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John McCormac works
Medicare's Facility Affiliation Data lists John McCormac at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ashtabula County Medical CenterAshtabula, OH · Acute Care Hospital · CCN 360125
- Cleveland ClinicCleveland, OH · Acute Care Hospital · CCN 360180
- Crystal Clinic Orthopaedic CenterFairlawn, OH · Acute Care Hospital · CCN 360351
- Hillcrest HospitalMayfield Heights, OH · Acute Care Hospital · CCN 360230
- Union HospitalDover, OH · Acute Care Hospital · CCN 360010
Practice locations
Addresses where John McCormac is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1125 Aspira CtMansfield, OH 44906
- 1740 Cleveland RdWooster, OH 44691 (330) 287‑4500
- 2420 Lake AveAshtabula, OH 44004 (440) 997‑2262
- 25900 Science Park Dr, Suite Ac238Beachwood, OH 44122 (216) 448‑3084
- 2801 N Decatur Rd, Suite 100Decatur, GA 30033 (404) 937‑3046
Group practices
Medicare enrollment lists John McCormac as a member of these groups (CMS data updated 2026-10-02).
- Cleveland Clinic7,090 clinicians in the group
- Wooster Clinic LLC299 clinicians in the group
- Clinic Medical Services Company98 clinicians in the group
- Allegiance Imaging and Radiology LLC13 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Mansfield
Clinicians with the same Medicare primary specialty in Mansfield, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235131996 |
| 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