Quick answers
- Which hospitals does Gregory S. Mangen work at?
- Medicare's official clinician data lists Gregory S. Mangen at 4 hospitals: Adena Regional Medical Center, Blanchard Valley Hospital, Kettering Health Dayton and Mount Carmel East & West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory S. Mangen see patients?
- Medicare's clinician data lists 6 practice locations, including Washington Court House, OH, Chillicothe, OH and Kettering, OH. Call before your visit to confirm the address.
- What is Gregory S. Mangen's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Gregory S. Mangen accept Medicare assignment?
- Medicare's clinician data says Gregory S. Mangen may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Gregory S. Mangen?
- (740) 335-1210, as listed in official Medicare / NPI Registry data.
- What is Gregory S. Mangen's NPI number?
- 1386856581. 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 S. Mangen works
Medicare's Facility Affiliation Data lists Gregory S. Mangen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adena Regional Medical CenterChillicothe, OH · Acute Care Hospital · CCN 360159
- Blanchard Valley HospitalFindlay, OH · Acute Care Hospital · CCN 360095
- Kettering Health DaytonDayton, OH · Acute Care Hospital · CCN 360133
- Mount Carmel East & WestColumbus, OH · Acute Care Hospital · CCN 360035
Practice locations
Addresses where Gregory S. Mangen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1430 Columbus AveWashington Court House, OH 43160 (740) 335‑1210
- 272 Hospital RdChillicothe, OH 45601 (740) 779‑7500
- 4403 Far Hills AveKettering, OH 45429
- 4441 Far Hills AveKettering, OH 45429
- 7500 State RdCincinnati, OH 45255 (513) 624‑4500
Group practices
Medicare enrollment lists Gregory S. Mangen as a member of these groups (CMS data updated 2026-10-02).
- Kettering Independent Medical Group Inc710 clinicians in the group
- Hospitalist Medicine Physicians of Ohio, Professional Corporation158 clinicians in the group
- Hospitalist Medicine Physicians of Ohio-Columbus II Professional Corp70 clinicians in the group
- NW Ohio Hospital Medicine Physicians LLC55 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1386856581 |
| 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