Quick answers
- Does Dallen B. Ashby accept Medicare assignment?
- Yes. Medicare's clinician data says Dallen B. Ashby accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Dallen B. Ashby see?
- In 2024, CMS data shows 2,616 Original Medicare patients and 4,551 services for Dallen B. Ashby. This counts Original Medicare only and measures volume, not quality.
- What is Dallen B. Ashby's NPI number?
- 1851555478. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Dallen B. Ashby, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 2,616 |
|---|---|
| Services billed to Medicare | 4,551 |
| Different services or procedures | 193 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Screening mammography (77067)531 services
- Screening 3d breast mammography (77063)490 services
- X-ray of chest, 1 view (71045)416 services
- Ct scan of abdomen and pelvis with contrast (74177)195 services
- X-ray of chest, 2 views (71046)194 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure69%
- High cholesterol61%
- Arthritis45%
- Diabetes27%
- Depression25%
- Anxiety25%
Hospitals where Dallen B. Ashby works
Medicare's Facility Affiliation Data lists Dallen B. Ashby at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Prov Sacred HRT Medical Center & Childs HospitalSpokane, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500054
- St Joseph Regional Medical CenterLewiston, ID · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 130003
- St Mary's HospitalCottonwood, ID · Critical Access Hospital · Emergency services: listed by Medicare · CCN 131321
- Syringa General HospitalGrangeville, ID · Critical Access Hospital · Emergency services: listed by Medicare · CCN 131315
- Tri-State Memorial HospitalClarkston, WA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 501332
Practice locations
Addresses where Dallen B. Ashby is enrolled with Medicare (CMS data updated October 2, 2026).
- 1221 Highland AveClarkston, WA 99403 (509) 758‑5511
- 1522 17th StLewiston, ID 83501 (208) 743‑8416
- 531 4th AveLewiston, ID 83501 (208) 743‑4393
Group practices
Medicare enrollment lists Dallen B. Ashby as a member of these groups (CMS data updated October 2, 2026).
- Tri-State Memorial Hospital35 clinicians in the group
- Vannvei LLC19 clinicians in the group
- Phoenix Radiology, PLLC8 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Clarkston
Clinicians with the same Medicare primary specialty in Clarkston, WA — not a recommendation.
Other clinicians in Tri-State Memorial Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851555478 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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