Joseph Osullivan-Trevena
NPI 1861110983 · Mental Health Counselor · San Leandro, CA
Joseph Osullivan-Trevena is a Mental Health Counselor provider in San Leandro, CA (NPI 1861110983).
Provider details
- NPI number
- 1861110983
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
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
3 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
- 2022-08-15
- Last updated
- 2022-08-15
- Certified
- 2022-08-15
Frequently asked questions
- What is Joseph Osullivan-Trevena's NPI number?
- Joseph Osullivan-Trevena's National Provider Identifier (NPI) is 1861110983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Osullivan-Trevena's specialty?
- Joseph Osullivan-Trevena is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Joseph Osullivan-Trevena located?
- Joseph Osullivan-Trevena's practice location on file with NPPES is 3081 Teagarden St, San Leandro, CA 94577-5720.
- What is Joseph Osullivan-Trevena's phone number?
- The practice phone number listed in the NPPES registry for Joseph Osullivan-Trevena is (510) 347-4620.
- Is Joseph Osullivan-Trevena's NPI active?
- Yes — Joseph Osullivan-Trevena's NPI (1861110983) is active in the NPPES registry as of the last update on 2022-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.