Quick answers
- Which hospitals does Douglas R. Keyser work at?
- Medicare's official clinician data lists Douglas R. Keyser at 4 hospitals: Camden Clark Medical Center, Marietta Memorial Hospital, Selby General Hospital and Sistersville General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas R. Keyser see patients?
- Medicare's clinician data lists 1 practice location in Belpre, OH. Call before your visit to confirm the address.
- What is Douglas R. Keyser's specialty?
- Medicare lists Radiation Oncology as the primary specialty, and also Internal Medicine.
- Does Douglas R. Keyser accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas R. Keyser 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 Douglas R. Keyser?
- (740) 376-1960, as listed in official Medicare / NPI Registry data.
- What is Douglas R. Keyser's NPI number?
- 1902831688. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas R. Keyser works
Medicare's Facility Affiliation Data lists Douglas R. Keyser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Camden Clark Medical CenterParkersburg, WV · Acute Care Hospital · CCN 510058
- Marietta Memorial HospitalMarietta, OH · Acute Care Hospital · CCN 360147
- Selby General HospitalMarietta, OH · Critical Access Hospital · CCN 361319
- Sistersville General HospitalSistersville, WV · Critical Access Hospital · CCN 511304
Practice locations
Addresses where Douglas R. Keyser is enrolled with Medicare (CMS data updated 2026-10-02).
- 807 Farson St, Suite 116Belpre, OH 45714 (740) 376‑1960
Group practices
Medicare enrollment lists Douglas R. Keyser as a member of this group (CMS data updated 2026-10-02).
- Marietta Memorial Hospital392 clinicians in the group
Specialties
- Radiation Oncologyprimary
- Internal Medicinealso
Other radiation oncologists in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northeastern Ohio University College Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902831688 |
| 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