David Spellman-Zimmerman, RADT
NPI 1063024701 · Addiction (Substance Use Disorder) Counselor · Clayton, CA
David Spellman-Zimmerman, RADT is a Addiction (Substance Use Disorder) Counselor provider in Clayton, CA (NPI 1063024701).
Provider details
- NPI number
- 1063024701
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- RADT
- Sex
- Male
- Sole proprietor
- No
- License
- R1376600120 (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
5 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
- 2020-08-22
- Last updated
- 2020-08-22
- Certified
- 2020-08-22
Frequently asked questions
- What is David Spellman-Zimmerman's NPI number?
- David Spellman-Zimmerman's National Provider Identifier (NPI) is 1063024701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Spellman-Zimmerman's specialty?
- David Spellman-Zimmerman is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is David Spellman-Zimmerman located?
- David Spellman-Zimmerman's practice location on file with NPPES is 11540 Marsh Creek Rd, Clayton, CA 94517-9759.
- What is David Spellman-Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for David Spellman-Zimmerman is (925) 672-5700.
- Is David Spellman-Zimmerman's NPI active?
- Yes — David Spellman-Zimmerman's NPI (1063024701) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.