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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Charles Sroka, MD

Radiation Oncology Physician in Eugene, OR · enumerated 2008 · practices at Oncology Associates of Oregon P C.

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

National Provider Identifier

1700058021

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Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Charles Sroka
Credential MD
Sex Male
Practice address 520 Country Club, Eugene, OR, 97401
Phone (541) 683-5001
Fax (541) 683-1422
Enumeration date Mar 26, 2008
Last updated in NPPES Jul 15, 2021

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 82131 (AZ) Secondary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 15775 (NH) Secondary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License MD172744 (OR) 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

Where does Thomas Sroka practice?
The practice location on file with NPPES is in Eugene, OR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Sroka?
The National Provider Identifier (NPI) for Thomas Sroka is 1700058021, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-15.