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

Mr. Mark Gutkin, L.AC

Acupuncturist in Stamford, CT · enumerated 2008.

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

National Provider Identifier

1629240320

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Gutkin

Credential L.AC

Sex Male

Practice address Stamford, CT, 06905

Phone (203) 533-9463

Enumeration date Apr 2, 2008

Last updated in NPPES Oct 22, 2020

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 003404 (NY) Secondary

171100000X Acupuncturist Other Service Providers · License 393 (CT) Secondary

171100000X Acupuncturist Other Service Providers · License 0393 (CT) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC 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

What specialty is Mark Gutkin?

Mark Gutkin is registered in NPPES with the primary taxonomy of Acupuncturist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-22.