Quick answers
- Does Joshua L. Mayfield accept Medicare assignment?
- Medicare's clinician data says Joshua L. Mayfield may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Joshua L. Mayfield see?
- In 2024, CMS data shows 44 Original Medicare patients and 86 services for Joshua L. Mayfield. This counts Original Medicare only and measures volume, not quality.
- What is Joshua L. Mayfield's NPI number?
- 1144475559. 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 Joshua L. Mayfield, 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 | 44 |
|---|---|
| Services billed to Medicare | 86 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Hospital discharge day management, 30 minutes or less (99238)19 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)16 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)15 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 pressure73%
- High cholesterol55%
- Chronic kidney disease50%
- Anxiety45%
- Arthritis43%
- Depression39%
Hospitals where Joshua L. Mayfield works
Medicare's Facility Affiliation Data lists Joshua L. Mayfield 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.
- Coulee Medical CenterGrand Coulee, WA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 501308
- Garfield County Public Hospital District #1Pomeroy, WA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 501301
- St Joseph Regional Medical CenterLewiston, ID · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 130003
- Trios HealthKennewick, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500053
- Whitman Hospital and Medical CenterColfax, WA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 501327
Practice locations
Addresses where Joshua L. Mayfield is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 10; the Medicare profile lists all.
- 1200 W Fairview RdColfax, WA 99111
- 1200 W Fairview StColfax, WA 99111 (509) 397‑3435
- 1200 W Fairview St, BColfax, WA 99111
- 1210 W Fairview StColfax, WA 99111 (509) 397‑4717
- 12606 E Mission AveSpokane Valley, WA 99216 (509) 473‑5177
Group practices
Medicare enrollment lists Joshua L. Mayfield as a member of these groups (CMS data updated October 2, 2026).
- Spokane Emergency Care Physicians PLLC69 clinicians in the group
- Douglas, Grant, Lincoln and Okanogan Counties Public Hospital District39 clinicians in the group
- Public Hospital District No 3 of Whitman County23 clinicians in the group
- Sound Physicians Emergency Medicine of Washington PLLC21 clinicians in the group
- Garfield County Memorial Hospital District9 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Washington
Clinicians with the same Medicare primary specialty in Washington — not a recommendation.
Other clinicians in Spokane Emergency Care Physicians PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1144475559 |
| 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