Quick answers
- Which hospitals does Gregory B. Parranto work at?
- Medicare's official clinician data lists Gregory B. Parranto at 2 hospitals: Lima Memorial Health System and Mercy Health St Ritas Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory B. Parranto see patients?
- Medicare's clinician data lists 1 practice location in Lima, OH. Call before your visit to confirm the address.
- What is Gregory B. Parranto's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gregory B. Parranto accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory B. Parranto 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 Gregory B. Parranto?
- (419) 516-0327, as listed in official Medicare / NPI Registry data.
- What is Gregory B. Parranto's NPI number?
- 1447238993. 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 B. Parranto works
Medicare's Facility Affiliation Data lists Gregory B. Parranto at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lima Memorial Health SystemLima, OH · Acute Care Hospital · CCN 360009
- Mercy Health St Ritas Medical CenterLima, OH · Acute Care Hospital · CCN 360066
Practice locations
Addresses where Gregory B. Parranto is enrolled with Medicare (CMS data updated 2026-10-02).
- 1550 N Main StLima, OH 45801 (419) 516‑0327
Group practices
Medicare enrollment lists Gregory B. Parranto as a member of this group (CMS data updated 2026-10-02).
- Health Partners of Western Ohio57 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Lima
Clinicians with the same Medicare primary specialty in Lima, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447238993 |
| 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