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

Dr. Viktor P Sulkowski, M.D.

Specialist in Kingsport, TN · enumerated 2006.

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

National Provider Identifier

1780796003

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Registry record

Entity type Individual (Type 1)

Name Dr. Viktor P Sulkowski

Credential M.D.

Sex Male

Practice address Kingsport, TN, 37663

Phone (423) 279-1400

Enumeration date Aug 31, 2006

Last updated in NPPES Jul 9, 2007

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD0000010318 (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
4051152	Other	TN	BCBS TN PROVIDER NUMBER
4051167	Other	TN	BCBS TN GRP PROVIDER NUMB
3379190	Medicaid	TN	-

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 Viktor Sulkowski practice?

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

What is the NPI number for Viktor Sulkowski?

The National Provider Identifier (NPI) for Viktor Sulkowski is 1780796003, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.