Martha Klassen, PSYD, BCBA
NPI 1700135548 · Clinical Psychologist · Los Alamitos, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Martha Klassen, PSYD, BCBA is a Clinical Psychologist provider in Los Alamitos, CA (NPI 1700135548).
Provider details
- NPI number
- 1700135548
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD, BCBA
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Behavior Analyst103K00000X
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
13 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
- 2012-09-07
- Last updated
- 2025-03-21
- Certified
- 2025-03-21
Frequently asked questions
- What is Martha Klassen's NPI number?
- Martha Klassen's National Provider Identifier (NPI) is 1700135548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Klassen's specialty?
- Martha Klassen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Martha Klassen located?
- Martha Klassen's practice location on file with NPPES is 5212 Katella Ave Ste 104, Los Alamitos, CA 90720-6829.
- What is Martha Klassen's phone number?
- The practice phone number listed in the NPPES registry for Martha Klassen is (714) 490-3428.
- Does Martha Klassen accept Medicare?
- Martha Klassen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Martha Klassen's NPI active?
- Yes — Martha Klassen's NPI (1700135548) is active in the NPPES registry as of the last update on 2025-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.