What is David Guzman's NPI number?

David Guzman's National Provider Identifier (NPI) is 1649773805, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is David Guzman's specialty?

David Guzman is listed in the NPPES registry with a primary specialty of Community Health Worker (Other Service Providers).

Where is David Guzman located?

David Guzman's practice location on file with NPPES is 401 E Imperial Hwy, Fullerton, CA 92835-1810.

What is David Guzman's phone number?

The practice phone number listed in the NPPES registry for David Guzman is (714) 447-7000.

Is David Guzman's NPI active?

Yes — David Guzman's NPI (1649773805) is active in the NPPES registry as of the last update on 2026-02-09.

IndividualActive

David Guzman

NPI 1649773805 · Community Health Worker · Fullerton, CA

David Guzman is a Community Health Worker provider in Fullerton, CA (NPI 1649773805).

Provider details

NPI number: 1649773805
Entity type: Individual
Primary specialty: Community Health WorkerOther Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Community Health WorkerPrimary172V00000X
Other Service Providers

Profile Score

Established profile(62/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
8 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

401 E Imperial Hwy

Fullerton, CA 92835-1810

Phone: (714) 447-7000

Approximate (ZIP-level) locationGet directions

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Mailing address