Derek Larsen, M.S., NCC
NPI 1336538479 · Mental Health Counselor · San Diego, CA
Derek Larsen, M.S., NCC is a Mental Health Counselor provider in San Diego, CA (NPI 1336538479).
Provider details
- NPI number
- 1336538479
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- M.S., NCC
- Sex
- Male
- Sole proprietor
- Yes
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
11 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
Mailing address
Registry dates
- Enumerated
- 2015-01-13
- Last updated
- 2015-01-13
Frequently asked questions
- What is Derek Larsen's NPI number?
- Derek Larsen's National Provider Identifier (NPI) is 1336538479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Larsen's specialty?
- Derek Larsen is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Derek Larsen located?
- Derek Larsen's practice location on file with NPPES is 734 10th Ave, San Diego, CA 92101-6502.
- What is Derek Larsen's phone number?
- The practice phone number listed in the NPPES registry for Derek Larsen is (619) 239-4663.
- Is Derek Larsen's NPI active?
- Yes — Derek Larsen's NPI (1336538479) is active in the NPPES registry as of the last update on 2015-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.