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

Sergey Zasypayko, M.D

Internal Medicine Physician in Branford, CT · enumerated 2008.

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

National Provider Identifier

1992961775

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Registry record

Entity type Individual (Type 1)

Name Sergey Zasypayko

Credential M.D

Sex Male

Practice address Branford, CT, 06405

Phone (203) 643-0620

Fax (203) 643-0623

Enumeration date Jul 31, 2008

Last updated in NPPES Jan 16, 2013

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

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 249366 (NY) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 048353 (CT) 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

Is NPI 1992961775 active?

Yes, as of the latest NPPES snapshot, NPI 1992961775 is active (record last updated 2013-01-16).

How do I verify Sergey Zasypayko's NPI record?

Cross-check NPI 1992961775 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-16.