Gregory Sullivan
NPI 1699331918 · Addiction (Substance Use Disorder) Counselor · Oroville, CA
Gregory Sullivan is a Addiction (Substance Use Disorder) Counselor provider in Oroville, CA (NPI 1699331918).
Provider details
- NPI number
- 1699331918
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- 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
7 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
- 2019-05-13
- Last updated
- 2019-05-13
Frequently asked questions
- What is Gregory Sullivan's NPI number?
- Gregory Sullivan's National Provider Identifier (NPI) is 1699331918, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Sullivan's specialty?
- Gregory Sullivan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Gregory Sullivan located?
- Gregory Sullivan's practice location on file with NPPES is 2167 Montgomery St, Oroville, CA 95965-4945.
- What is Gregory Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Gregory Sullivan is (530) 854-4119.
- Is Gregory Sullivan's NPI active?
- Yes — Gregory Sullivan's NPI (1699331918) is active in the NPPES registry as of the last update on 2019-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.