Mark Stahlhuth, PH.D.
NPI 1821389164 · Clinical Psychologist · Thousand Oaks, CA
Mark Stahlhuth, PH.D. is a Clinical Psychologist provider in Thousand Oaks, CA (NPI 1821389164).
Provider details
- NPI number
- 1821389164
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY14200 (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
15 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
- 2011-04-20
- Last updated
- 2011-04-20
Frequently asked questions
- What is Mark Stahlhuth's NPI number?
- Mark Stahlhuth's National Provider Identifier (NPI) is 1821389164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Stahlhuth's specialty?
- Mark Stahlhuth is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Stahlhuth located?
- Mark Stahlhuth's practice location on file with NPPES is 100 E Thousand Oaks Blvd, Thousand Oaks, CA 91360-5713.
- What is Mark Stahlhuth's phone number?
- The practice phone number listed in the NPPES registry for Mark Stahlhuth is (805) 908-1033.
- Is Mark Stahlhuth's NPI active?
- Yes — Mark Stahlhuth's NPI (1821389164) is active in the NPPES registry as of the last update on 2011-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.