Quick answers
- Which hospitals does Riley L. Cooper work at?
- Medicare's official clinician data lists Riley L. Cooper at 1 hospital: Down East Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Riley L. Cooper see patients?
- Medicare's clinician data lists 1 practice location in Machias, ME. Call before your visit to confirm the address.
- What is Riley L. Cooper's specialty?
- Medicare lists Emergency Medicine as the primary specialty, and also Critical Care (Intensivists).
- Does Riley L. Cooper accept Medicare assignment?
- Yes. Medicare's clinician data says Riley L. Cooper 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 Riley L. Cooper?
- (207) 255-3356, as listed in official Medicare / NPI Registry data.
- What is Riley L. Cooper's NPI number?
- 1457692980. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Riley L. Cooper works
Medicare's Facility Affiliation Data lists Riley L. Cooper at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Down East Community HospitalMachias, ME · Critical Access Hospital · CCN 201311
Practice locations
Addresses where Riley L. Cooper is enrolled with Medicare (CMS data updated 2026-10-02).
- 11 Hospital DrMachias, ME 04654 (207) 255‑3356
Group practices
Medicare enrollment lists Riley L. Cooper as a member of this group (CMS data updated 2026-10-02).
- Down East Community Hospital29 clinicians in the group
Specialties
Other emergency medicine doctors in Machias
Clinicians with the same Medicare primary specialty in Machias, ME — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457692980 |
| 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