Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John T Triantafyllos, M.D.

Radiation Oncology Physician in Des Moines, IA · enumerated 2006.

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

National Provider Identifier

1720053705

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Registry record

Entity type Individual (Type 1)

Name John T Triantafyllos

Credential M.D.

Sex Male

Practice address 1221 Pleasant St, Suite A100, Des Moines, IA, 50309

Phone (515) 241-4330

Enumeration date Feb 22, 2006

Last updated in NPPES Dec 12, 2008

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License G083479 (CA) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 37665 (IA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Triantafyllos practice?

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

What is the NPI number for John Triantafyllos?

The National Provider Identifier (NPI) for John Triantafyllos is 1720053705, 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 2008-12-12.