Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Poseidon Spyros Varvitsiotis, MD

Surgery Physician in Santa Fe, NM · enumerated 2006.

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

National Provider Identifier

1003858515

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Registry record

Entity type Individual (Type 1)

Name Poseidon Spyros Varvitsiotis

Credential MD

Sex Male

Practice address 1631 Hospital Dr, Santa Fe, NM, 87505

Phone (505) 988-3975

Fax (505) 986-8001

Enumeration date Jun 11, 2006

Last updated in NPPES Apr 23, 2012

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 97-397 (NM) Primary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 97--397 (NM) Secondary

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
000R6782	Medicaid	NM	-

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 Poseidon Varvitsiotis?

Poseidon Varvitsiotis is registered in NPPES with the primary taxonomy of Surgery 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 2012-04-23.