Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William D. Mosier, MD, Inc , a Professional Medical Corporation

Organization Ophthalmology Physician · NPI 1003476508

William D. Mosier, MD, Inc , a Professional Medical Corporation is an Ophthalmology Physician in Fullerton, California. Registered with an NPI since 2019.

In the registry since
2019
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

265 Laguna Rd
Fullerton, CA 92835-2515
Phone: (714) 871-2570
Fax: (714) 441-2020
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X

Record details

NPI number1003476508
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official William Mosier — Owner · (714) 871-2570
NPI enumeratedJune 17, 2019
Last updated in NPPESNovember 2, 2023
Certification dateNovember 2, 2023
Mailing address265 Laguna Rd, Fullerton, CA 92835-2515

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