Quick answers
- Does Jeffrey S. Nackos accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey S. Nackos 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 Jeffrey S. Nackos see?
- In 2024, CMS data shows 3,148 Original Medicare patients and 16,921 services for Jeffrey S. Nackos. This counts Original Medicare only and measures volume, not quality.
- What is Jeffrey S. Nackos's NPI number?
- 1548451362. 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 Jeffrey S. Nackos, 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 | 3,148 |
|---|---|
| Services billed to Medicare | 16,921 |
| Different services or procedures | 93 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)10,745 services
- Injection, gadobutrol, 0.1 ml (A9585)2,122 services
- X-ray of chest, 1 view (71045)688 services
- X-ray of chest, 2 views (71046)589 services
- Ct scan of abdomen and pelvis with contrast (74177)393 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 pressure75%
- High cholesterol70%
- Arthritis51%
- Ischemic heart disease34%
- Diabetes30%
- Chronic kidney disease30%
Hospitals where Jeffrey S. Nackos works
Medicare's Facility Affiliation Data lists Jeffrey S. Nackos 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.
- Kadlec Regional Medical CenterRichland, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500058
- Prov Sacred HRT Medical Center & Childs HospitalSpokane, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500054
- Providence Mount Carmel HospitalColville, WA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 501326
- St. Patrick HospitalMissoula, MT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 270014
- Summit Pacific Medical CenterElma, WA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 501304
Practice locations
Addresses where Jeffrey S. Nackos is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 25; the Medicare profile lists all.
- 101 W 8th AveSpokane, WA 99204 (509) 363‑7745
- 1145 BroadwaySeattle, WA 98122 (206) 329‑1760
- 1145 Broadway, Suite 2mSeattle, WA 98122 (206) 682‑3447
- 1200 12th Ave SSeattle, WA 98144 (509) 363‑7788
- 12420 E Mission AveSpokane Valley, WA 99216 (509) 747‑4455
Group practices
Medicare enrollment lists Jeffrey S. Nackos as a member of these groups (CMS data updated October 2, 2026).
- The Polyclinic PLLC365 clinicians in the group
- Oregon Healthcare Resources LLC159 clinicians in the group
- Inland Imaging LLC129 clinicians in the group
- Integra Imaging PS128 clinicians in the group
- Inland Imaging Associates PS126 clinicians in the group
- The Corvallis Clinic P C124 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Spokane
Clinicians with the same Medicare primary specialty in Spokane, WA — not a recommendation.
Other clinicians in The Polyclinic PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Utah School Of Medicine |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548451362 |
| 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