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

Oleg Sirotnikov, LCSW

Social Worker in Valley Stream, NY · enumerated 2006 · practices at Oleg Sirotnikov, L.C.S.W.,P.C..

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

National Provider Identifier

1578525234

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Oleg Sirotnikov

Credential LCSW

Sex Male

Practice address Valley Stream, NY, 11581

Phone (516) 295-2659

Fax (516) 295-2659

Enumeration date Apr 6, 2006

Last updated in NPPES Aug 3, 2010

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License P058840 (NY) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
P058840	Other	NY	HIP
02247607	Medicaid	NY	-
2989566	Other	NY	CIGNA

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 is the NPI number for Oleg Sirotnikov?

The National Provider Identifier (NPI) for Oleg Sirotnikov is 1578525234, a Type 1 (individual) record in the CMS NPPES registry.

Where does Oleg Sirotnikov practice?

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

Other providers at this practice address

Browse all →

Oleg Sirotnikov, L.C.S.W.,P.C. Clinical Social Worker · Valley Stream, NY NPI 1427359918 Mateusz Kurtyka Student in an Organized Health Care Education/Training Program · Valley Stream, NY NPI 1780517235

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-03.