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Dr. David Marshall Jr., OD, PHD

Optometrist in Mentor, OH · enumerated 2015 · practices at Dr Sayed Hasan Od.

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

National Provider Identifier

1912376377

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Registry record

Entity type Individual (Type 1)
Name Dr. David Marshall Jr.
Credential OD, PHD
Sex Male
Practice address 7640 Mentor Ave, Mentor, OH, 44060
Phone (440) 942-3937
Enumeration date Sep 16, 2015
Last updated in NPPES Apr 21, 2016

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3874 (OH) 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

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.
What specialty is David Marshall?
David Marshall 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-21.