Quick answers
- Does Nikolaos Myriounis accept Medicare assignment?
- Yes. Medicare's clinician data says Nikolaos Myriounis 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 Nikolaos Myriounis see?
- In 2024, CMS data shows 47 Original Medicare patients and 10,054 services for Nikolaos Myriounis. This counts Original Medicare only and measures volume, not quality.
- What is Nikolaos Myriounis's NPI number?
- 1821235474. 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 Nikolaos Myriounis, 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 | 47 |
|---|---|
| Services billed to Medicare | 10,054 |
| Different services or procedures | 63 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)51 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)20 services
- Insertion of needle into vein for collection of blood sample (36415)17 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 pressure68%
- High cholesterol53%
- Arthritis49%
- Chronic kidney disease38%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%
- Diabetes36%
Hospitals where Nikolaos Myriounis works
Medicare's Facility Affiliation Data lists Nikolaos Myriounis 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
- Lourdes Medical CenterPasco, WA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 501337
- Prosser Memorial HospitalProsser, WA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 501312
- Trios HealthKennewick, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500053
Practice locations
Addresses where Nikolaos Myriounis is enrolled with Medicare (CMS data updated October 2, 2026).
- 3730 Plaza WayKennewick, WA 99338 (509) 221‑6450
Group practices
Medicare enrollment lists Nikolaos Myriounis as a member of this group (CMS data updated October 2, 2026).
- RCCH Trios Health LLC65 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Kennewick
Clinicians with the same Medicare primary specialty in Kennewick, WA — not a recommendation.
Other clinicians in RCCH Trios Health LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| 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) | 1821235474 |
| 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