Quick answers
- Which hospitals does C Mark Alder work at?
- Medicare's official clinician data lists C Mark Alder at 5 hospitals: Lincoln Hospital, Newport Community Hospital, Providence Mount Carmel Hospital, Pullman Regional Hospital and Samaritan Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does C Mark Alder see patients?
- Medicare's clinician data lists 3 practice locations, including Seattle, WA, Missoula, MT and Spokane, WA. Call before your visit to confirm the address.
- What is C Mark Alder's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does C Mark Alder accept Medicare assignment?
- Yes. Medicare's clinician data says C Mark Alder 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 C Mark Alder?
- (509) 363-7745, as listed in official Medicare / NPI Registry data.
- What is C Mark Alder's NPI number?
- 1386631927. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where C Mark Alder works
Medicare's Facility Affiliation Data lists C Mark Alder at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lincoln HospitalDavenport, WA · Critical Access Hospital · CCN 501305
- Newport Community HospitalNewport, WA · Critical Access Hospital · CCN 501310
- Providence Mount Carmel HospitalColville, WA · Critical Access Hospital · CCN 501326
- Pullman Regional HospitalPullman, WA · Critical Access Hospital · CCN 501331
- Samaritan HospitalMoses Lake, WA · Acute Care Hospital · CCN 500033
Practice locations
Addresses where C Mark Alder is enrolled with Medicare (CMS data updated 2026-10-02).
- 1200 12th Ave SSeattle, WA 98144 (509) 363‑7745
- 2419 Mullan Rd, Suite DMissoula, MT 59808 (509) 363‑7788
- 525 S Cowley StSpokane, WA 99202 (509) 747‑4455
Group practices
Medicare enrollment lists C Mark Alder as a member of these groups (CMS data updated 2026-10-02).
- Inland Imaging LLC129 clinicians in the group
- Integra Imaging PS128 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Seattle
Clinicians with the same Medicare primary specialty in Seattle, WA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386631927 |
| 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