Provider Profile

William Y. Gregg, DDS

Unclaimed Profile

About Dr. Gregg

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Specialty

Dentist (Primary)

Credentials & Licensing

CA license26644
NPI1568589729
NPI issued03/23/2007

Source: NPPES NPI Registry

Common questions

What is Dr. Gregg's specialty?

Dr. Gregg is a dentist in Lake Forest, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where can I find Dr. Gregg?

Dr. Gregg is listed at 23321 El Toro Rd Suite D, Lake Forest, CA 92630. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact Dr. Gregg?

The number on file is (949) 770-7686. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Dr. Gregg?

Dr. Gregg's National Provider Identifier is 1568589729. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

How much experience does Dr. Gregg have?

Dr. Gregg has 19+ years experience. Registered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Is Dr. Gregg's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gregg. If this is you, claiming it is free.

Guide.md

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.