Catherine Ridder
NPI 1659497659 · Marriage & Family Therapist · Pasadena, CA
Catherine Ridder is a Marriage & Family Therapist provider in Pasadena, CA (NPI 1659497659).
Provider details
- NPI number
- 1659497659
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25796 (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
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
Mailing address
Registry dates
- Enumerated
- 2007-03-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Catherine Ridder's NPI number?
- Catherine Ridder's National Provider Identifier (NPI) is 1659497659, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Ridder's specialty?
- Catherine Ridder is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Catherine Ridder located?
- Catherine Ridder's practice location on file with NPPES is 595 E Colorado Blvd, Pasadena, CA 91101-2039.
- What is Catherine Ridder's phone number?
- The practice phone number listed in the NPPES registry for Catherine Ridder is (626) 793-7520.
- Is Catherine Ridder's NPI active?
- Yes — Catherine Ridder's NPI (1659497659) 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.