NPI Portal NPI Lookup & Verification

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

Mr. Wittaya Michael Sattasiri, MD

Radiation Oncology Physician in Columbia, TN · enumerated 2006 · practices at Tennessee Oncology Pllc.

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

National Provider Identifier

1821198029

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Registry record

Entity type Individual (Type 1)
Name Mr. Wittaya Michael Sattasiri
Credential MD
Sex Male
Practice address Columbia, TN, 38401
Phone (407) 788-1906
Enumeration date Sep 25, 2006
Last updated in NPPES Jan 4, 2023

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD0000037469 (TN) Secondary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License MD0000037469 (TN) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
4113874 Medicaid TN -
4113874 Other TN BLUE CROSS BLUE SHIELD

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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Wittaya Sattasiri?
Wittaya Sattasiri is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-04.