Sean Stillwell, RADT I
NPI 1427918762 · Addiction (Substance Use Disorder) Counselor · Oakland, CA
Sean Stillwell, RADT I is a Addiction (Substance Use Disorder) Counselor provider in Oakland, CA (NPI 1427918762).
Provider details
- NPI number
- 1427918762
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- RADT I
- Sex
- Male
- Sole proprietor
- Yes
- License
- RT1418661025 (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
Under 1 yr in 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
- 2025-11-17
- Last updated
- 2025-11-17
- Certified
- 2025-11-17
Frequently asked questions
- What is Sean Stillwell's NPI number?
- Sean Stillwell's National Provider Identifier (NPI) is 1427918762, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Stillwell's specialty?
- Sean Stillwell is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Sean Stillwell located?
- Sean Stillwell's practice location on file with NPPES is 722 Washington St, Oakland, CA 94607-3925.
- What is Sean Stillwell's phone number?
- The practice phone number listed in the NPPES registry for Sean Stillwell is (510) 899-2182.
- Is Sean Stillwell's NPI active?
- Yes — Sean Stillwell's NPI (1427918762) is active in the NPPES registry as of the last update on 2025-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.