What is John Firkus's NPI number?

John Firkus's National Provider Identifier (NPI) is 1578389573, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Firkus's specialty?

John Firkus is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is John Firkus located?

John Firkus's practice location on file with NPPES is 536 Silver Maple Dr, Hercules, CA 94547-2310.

What is John Firkus's phone number?

The practice phone number listed in the NPPES registry for John Firkus is (619) 299-9061.

Is John Firkus's NPI active?

Yes — John Firkus's NPI (1578389573) is active in the NPPES registry as of the last update on 2024-11-25.

IndividualActive

John Firkus, PHD

NPI 1578389573 · Psychologist · Hercules, CA

John Firkus, PHD is a Psychologist provider in Hercules, CA (NPI 1578389573).

Provider details

NPI number: 1578389573
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PHD
Sex: Male
Sole proprietor: Yes
License: 0134884 (VT)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 0134884 (VT)
Behavioral Health & Social Service Providers

Profile Score

Established profile(55/100 index)

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

Registry tenure38% of score
1 yr in NPPES 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

536 Silver Maple Dr

Hercules, CA 94547-2310

Phone: (619) 299-9061

Street-level locationGet directions

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Mailing address