Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Nikolaos Myriounis, MD

Hematology & Oncology Physician in Kennewick, WA · enumerated 2009 · practices at Rcch Trios Health LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821235474

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Registry record

Entity type Individual (Type 1)

Name Nikolaos Myriounis

Credential MD

Sex Male

Practice address Kennewick, WA, 99338

Phone (509) 221-2449

Fax (509) 221-2433

Enumeration date Jan 17, 2009

Last updated in NPPES Jun 24, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME145610 (FL) Secondary

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License ME145610 (FL) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 87124 (GA) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License ME145610 (FL) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD61530077 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Nikolaos Myriounis?

The National Provider Identifier (NPI) for Nikolaos Myriounis is 1821235474, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nikolaos Myriounis practice?

The practice location on file with NPPES is in Kennewick, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-24.