Douglas Yost, MA
NPI 1720266901 · Marriage & Family Therapist · Glendora, CA
Douglas Yost, MA is a Marriage & Family Therapist provider in Glendora, CA (NPI 1720266901).
Provider details
- NPI number
- 1720266901
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MA
- Sex
- Male
- Sole proprietor
- Yes
- License
- 49099 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Rehabilitation Practitioner225400000X
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-02-10
- Last updated
- 2016-01-05
Frequently asked questions
- What is Douglas Yost's NPI number?
- Douglas Yost's National Provider Identifier (NPI) is 1720266901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Yost's specialty?
- Douglas Yost is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Douglas Yost located?
- Douglas Yost's practice location on file with NPPES is 1122 E Route 66 Ste B, Glendora, CA 91740-3772.
- What is Douglas Yost's phone number?
- The practice phone number listed in the NPPES registry for Douglas Yost is (626) 862-2061.
- Is Douglas Yost's NPI active?
- Yes — Douglas Yost's NPI (1720266901) is active in the NPPES registry as of the last update on 2016-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.