Quick answers
- Which hospitals does Gregory Niehauser work at?
- Medicare's official clinician data lists Gregory Niehauser at 1 hospital: Mercy Health - West Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory Niehauser see patients?
- Medicare's clinician data lists 2 practice locations, including Cincinnati, OH and Mason, OH. Call before your visit to confirm the address.
- What is Gregory Niehauser's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gregory Niehauser accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Niehauser 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.
- Does Gregory Niehauser offer telehealth?
- Medicare's clinician data says Gregory Niehauser offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory Niehauser?
- (513) 981-4300, as listed in official Medicare / NPI Registry data.
- What is Gregory Niehauser's NPI number?
- 1518908250. 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 Niehauser works
Medicare's Facility Affiliation Data lists Gregory Niehauser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Health - West HospitalCincinnati, OH · Acute Care Hospital · CCN 360234
Practice locations
Addresses where Gregory Niehauser is enrolled with Medicare (CMS data updated 2026-10-02).
- 3310 Mercy Health Blvd, Suite 210Cincinnati, OH 45211 (513) 981‑4300
- 7567 Central Parke Blvd, AMason, OH 45040
Group practices
Medicare enrollment lists Gregory Niehauser as a member of these groups (CMS data updated 2026-10-02).
- Oxford Physical Therapy and Rehabilitation440 clinicians in the group
- Mercy Health Physicians Cincinnati LLC190 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Cincinnati
Clinicians with the same Medicare primary specialty in Cincinnati, OH — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1518908250 |
| 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