Quick answers
- Which hospitals does Gregory T. Maclennan work at?
- Medicare's official clinician data lists Gregory T. Maclennan at 5 hospitals: Parma Community General Hospital, Summa Western Reserve Hospital, UH Cleveland Medical Center, UH St John Medical Center and University Hospitals Ahuja Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory T. Maclennan see patients?
- Medicare's clinician data lists 1 practice location in Cleveland, OH. Call before your visit to confirm the address.
- What is Gregory T. Maclennan's specialty?
- Medicare lists Pathology as the primary specialty, and also Urology.
- Does Gregory T. Maclennan accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory T. Maclennan 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 Gregory T. Maclennan's NPI number?
- 1992731681. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory T. Maclennan works
Medicare's Facility Affiliation Data lists Gregory T. Maclennan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Parma Community General HospitalParma, OH · Acute Care Hospital · CCN 360041
- Summa Western Reserve HospitalCuyahoga Falls, OH · Acute Care Hospital · CCN 360150
- UH Cleveland Medical CenterCleveland, OH · Acute Care Hospital · CCN 360137
- UH St John Medical CenterWestlake, OH · Acute Care Hospital · CCN 360123
- University Hospitals Ahuja Medical CenterBeachwood, OH · Acute Care Hospital · CCN 360359
Practice locations
Addresses where Gregory T. Maclennan is enrolled with Medicare (CMS data updated 2026-10-02).
- 11100 Euclid AveCleveland, OH 44106
Group practices
Medicare enrollment lists Gregory T. Maclennan as a member of this group (CMS data updated 2026-10-02).
- University Hospitals Medical Group Inc2,294 clinicians in the group
Specialties
Other pathologists in Cleveland
Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1971 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992731681 |
| 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