Timothy Gunn, PSY.D.
NPI 1356466973 · Psychologist · Rancho Cucamonga, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Gunn, PSY.D. is a Psychologist provider in Rancho Cucamonga, CA (NPI 1356466973).
Provider details
- NPI number
- 1356466973
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY23190 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs 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
Mailing address
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2023-07-19
- Certified
- 2023-07-19
Frequently asked questions
- What is Timothy Gunn's NPI number?
- Timothy Gunn's National Provider Identifier (NPI) is 1356466973, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Gunn's specialty?
- Timothy Gunn is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Timothy Gunn located?
- Timothy Gunn's practice location on file with NPPES is 8300 Utica Ave Ste 245, Rancho Cucamonga, CA 91730-3852.
- What is Timothy Gunn's phone number?
- The practice phone number listed in the NPPES registry for Timothy Gunn is (909) 989-4055.
- Does Timothy Gunn accept Medicare?
- Timothy Gunn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Gunn's NPI active?
- Yes — Timothy Gunn's NPI (1356466973) is active in the NPPES registry as of the last update on 2023-07-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.