IndividualActive
Douglas Larson, PH.D.
NPI 1801011580 · Clinical Psychologist · Colton, CA
Douglas Larson, PH.D. is a Clinical Psychologist provider in Colton, CA (NPI 1801011580).
Provider details
- NPI number
- 1801011580
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY9281 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
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
1430 E Cooley Dr
Suite 209
Colton, CA 92324-3934
Phone: (909) 798-8999
Street-level locationGet directions
Mailing address
11454 Golden Gate Dr
Yucaipa, CA 92399-9705
Registry dates
- Enumerated
- 2007-04-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Douglas Larson's NPI number?
- Douglas Larson's National Provider Identifier (NPI) is 1801011580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Larson's specialty?
- Douglas Larson is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Douglas Larson located?
- Douglas Larson's practice location on file with NPPES is 1430 E Cooley Dr, Colton, CA 92324-3934.
- What is Douglas Larson's phone number?
- The practice phone number listed in the NPPES registry for Douglas Larson is (909) 798-8999.
- Is Douglas Larson's NPI active?
- Yes — Douglas Larson's NPI (1801011580) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.