John Decker, MS IN COUNSELING
NPI 1669752721 · Marriage & Family Therapist · San Leandro, CA
John Decker, MS IN COUNSELING is a Marriage & Family Therapist provider in San Leandro, CA (NPI 1669752721).
Provider details
- NPI number
- 1669752721
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS IN COUNSELING
- Sex
- Male
- Sole proprietor
- No
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
14 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
- 2011-08-22
- Last updated
- 2011-10-24
Frequently asked questions
- What is John Decker's NPI number?
- John Decker's National Provider Identifier (NPI) is 1669752721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Decker's specialty?
- John Decker is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Decker located?
- John Decker's practice location on file with NPPES is 16378 E 14th St Ste 101, San Leandro, CA 94578-5121.
- What is John Decker's phone number?
- The practice phone number listed in the NPPES registry for John Decker is (510) 601-8201.
- Is John Decker's NPI active?
- Yes — John Decker's NPI (1669752721) is active in the NPPES registry as of the last update on 2011-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.