Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander Tkatchenko, DO

Psychiatry Physician in Erie, PA · enumerated 2024.

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

National Provider Identifier

1578305470

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander Tkatchenko

Credential DO

Sex Male

Practice address 5515 Peach St, Erie, PA, 16509

Phone (814) 864-4031

Enumeration date Jun 11, 2024

Last updated in NPPES Jun 11, 2024

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License OT023844 (PA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Alexander Tkatchenko?

Alexander Tkatchenko is registered in NPPES with the primary taxonomy of Psychiatry Physician. 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 2024-06-11.