What is Mark Guerrero's NPI number?

Mark Guerrero's National Provider Identifier (NPI) is 1649159146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Guerrero's specialty?

Mark Guerrero is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Mark Guerrero located?

Mark Guerrero's practice location on file with NPPES is 2011 Fresno St, Fresno, CA 93721-1722.

What is Mark Guerrero's phone number?

The practice phone number listed in the NPPES registry for Mark Guerrero is (559) 457-3340.

Is Mark Guerrero's NPI active?

Yes — Mark Guerrero's NPI (1649159146) is active in the NPPES registry as of the last update on 2025-08-28.

IndividualActive

Mark Guerrero

NPI 1649159146 · Clinical Social Worker · Fresno, CA

Mark Guerrero is a Clinical Social Worker provider in Fresno, CA (NPI 1649159146).

Provider details

NPI number: 1649159146
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No
License: 104393 (CA)

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense 104393 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(54/100 index)

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

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% 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

2011 Fresno St

Fresno, CA 93721-1722

Phone: (559) 457-3340

Street-level locationGet directions

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Mailing address