Marissa Oneill, CAPDT
NPI 1649110255 · Addiction (Substance Use Disorder) Counselor · San Francisco, CA
Marissa Oneill, CAPDT is a Addiction (Substance Use Disorder) Counselor provider in San Francisco, CA (NPI 1649110255).
Provider details
- NPI number
- 1649110255
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CAPDT
- Sex
- Female
- Sole proprietor
- No
- License
- 24546 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
2 documented practice locations
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
Additional practice locations (1)
- 508 7th AveSan Bruno, CA 94066-4522Phone: (650) 244-1444
Registry dates
- Enumerated
- 2026-03-31
- Last updated
- 2026-03-31
- Certified
- 2026-03-31
Frequently asked questions
- What is Marissa Oneill's NPI number?
- Marissa Oneill's National Provider Identifier (NPI) is 1649110255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Oneill's specialty?
- Marissa Oneill is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Marissa Oneill located?
- Marissa Oneill's practice location on file with NPPES is 1724 Bryant St, San Francisco, CA 94110-1406.
- What is Marissa Oneill's phone number?
- The practice phone number listed in the NPPES registry for Marissa Oneill is (415) 558-9125.
- Is Marissa Oneill's NPI active?
- Yes — Marissa Oneill's NPI (1649110255) is active in the NPPES registry as of the last update on 2026-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.