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

Alexander Oleynikov, ARDMS

Cardiology Technician in Buffalo Grove, IL · enumerated 2007.

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

National Provider Identifier

1205023140

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Registry record

Entity type Individual (Type 1)
Name Alexander Oleynikov
Credential ARDMS
Sex Male
Practice address Buffalo Grove, IL, 60089
Phone (847) 223-9494
Fax (847) 205-9722
Enumeration date Sep 25, 2007
Last updated in NPPES Sep 25, 2007

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

Taxonomy & licenses

246W00000X Cardiology Technician Technologists, Technicians & Other Technical Service Providers · License 32953 (IL) Primary
247200000X Other Technician Technologists, Technicians & Other Technical Service Providers · License 32952 (IL) Secondary

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

What specialty is Alexander Oleynikov?
Alexander Oleynikov is registered in NPPES with the primary taxonomy of Cardiology Technician. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-25.