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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leo Anthony Niemeier, MD

Anatomic Pathology Physician in Columbus, OH · enumerated 2007.

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

National Provider Identifier

1033328919

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Registry record

Entity type Individual (Type 1)
Name Dr. Leo Anthony Niemeier
Credential MD
Sex Male
Practice address 3535 Olentangy River Rd, Rmh Pathology Dept - Corpath, Columbus, OH, 43214
Phone (614) 566-4945
Fax (614) 263-1056
Enumeration date May 21, 2007
Last updated in NPPES Dec 9, 2022

Taxonomy & licenses

207ZP0101X Anatomic Pathology Physician Allopathic & Osteopathic Physicians · License 35095314 (OH) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
USE SSN-00 Other OH OHIO BWC
3046868 Medicaid OH -
P00854675 Other OH RR MCR

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

Is NPI 1033328919 active?
Yes, as of the latest NPPES snapshot, NPI 1033328919 is active (record last updated 2022-12-09).
How do I verify Leo Niemeier's NPI record?
Cross-check NPI 1033328919 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-09.