Shelley O'Sullivan, RAS
NPI 1952522898 · Addiction (Substance Use Disorder) Counselor · Hayward, CA
Shelley O'Sullivan, RAS is a Addiction (Substance Use Disorder) Counselor provider in Hayward, CA (NPI 1952522898).
Provider details
- NPI number
- 1952522898
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- RAS
- Sex
- Female
- 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
19 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
- 2007-05-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Shelley O'Sullivan's NPI number?
- Shelley O'Sullivan's National Provider Identifier (NPI) is 1952522898, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shelley O'Sullivan's specialty?
- Shelley O'Sullivan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Shelley O'Sullivan located?
- Shelley O'Sullivan's practice location on file with NPPES is 795 Fletcher Ln, Hayward, CA 94544-1008.
- What is Shelley O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Shelley O'Sullivan is (510) 247-8300.
- Is Shelley O'Sullivan's NPI active?
- Yes — Shelley O'Sullivan's NPI (1952522898) 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.