NPI Portal NPI Lookup & Verification

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Mary Ann Joy Zastrow, O.D.

Optometrist in Minneapolis, MN · enumerated 2010 · practices at Downtown Eyes Optometric Pllc.

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

National Provider Identifier

1538471560

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Registry record

Entity type Individual (Type 1)
Name Mary Ann Joy Zastrow
Credential O.D.
Sex Female
Practice address 800 Nicollet Mall Ste 260, Minneapolis, MN, 55402
Phone (612) 333-3937
Fax (612) 359-0607
Enumeration date Jul 7, 2010
Last updated in NPPES Sep 20, 2016

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3211 (MN) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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.

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Frequently asked questions

What specialty is Mary Ann Zastrow?
Mary Ann Zastrow 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 2016-09-20.