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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Dale Mortimer, O.D.

Optometrist in Olean, NY · enumerated 2005 · practices at Health Systems Physician PC.

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

National Provider Identifier

1801881578

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Registry record

Entity type Individual (Type 1)
Name Dr. Michael Dale Mortimer
Credential O.D.
Sex Male
Practice address 130 S Union St, Ste. 8, Olean, NY, 14760
Phone (716) 372-8644
Fax (716) 373-4257
Enumeration date Sep 19, 2005
Last updated in NPPES Jan 21, 2009

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3906 (NY) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
NY3906 Other NY EYEMED
00606964 Medicaid NY -

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 Michael Mortimer?
Michael Mortimer is registered in NPPES with the primary taxonomy of Optometrist. 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 2009-01-21.