Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander Tiemeier, D.O.

Cardiovascular Disease Physician in Buffalo, NY · enumerated 2017.

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

National Provider Identifier

1932632213

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander Tiemeier

Credential D.O.

Sex Male

Practice address 462 Grider St, Buffalo, NY, 14215

Phone (716) 898-4226

Enumeration date Apr 4, 2017

Last updated in NPPES Aug 20, 2025

Taxonomy & licenses

207RC0001X Clinical Cardiac Electrophysiology Physician Allopathic & Osteopathic Physicians · License 334553 (NY) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 334553 (NY) 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

Where does Alexander Tiemeier practice?

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

What is the NPI number for Alexander Tiemeier?

The National Provider Identifier (NPI) for Alexander Tiemeier is 1932632213, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-20.