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Margreta Klassen, PHD
NPI 1255455176 · Clinical Psychologist · Santa Ana, CA
Margreta Klassen, PHD is a Clinical Psychologist provider in Santa Ana, CA (NPI 1255455176).
Provider details
- NPI number
- 1255455176
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY14581 (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
20371 Irvine Ave
Ste A160
Santa Ana, CA 92707-5651
Phone: (714) 540-5010
Fax: (714) 540-5020
Approximate (ZIP-level) locationGet directions
Mailing address
20371 Irvine Ave
Santa Ana, CA 92707-5651
Registry dates
- Enumerated
- 2007-03-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Margreta Klassen's NPI number?
- Margreta Klassen's National Provider Identifier (NPI) is 1255455176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margreta Klassen's specialty?
- Margreta Klassen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Margreta Klassen located?
- Margreta Klassen's practice location on file with NPPES is 20371 Irvine Ave, Santa Ana, CA 92707-5651.
- What is Margreta Klassen's phone number?
- The practice phone number listed in the NPPES registry for Margreta Klassen is (714) 540-5010.
- Is Margreta Klassen's NPI active?
- Yes — Margreta Klassen's NPI (1255455176) 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.