Jason Osowski
NPI 1538999248 · Addiction (Substance Use Disorder) Counselor · Garden Grove, CA
Jason Osowski is a Addiction (Substance Use Disorder) Counselor provider in Garden Grove, CA (NPI 1538999248).
Provider details
- NPI number
- 1538999248
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- R1512840723 (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
1 yr in NPPES 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
- 2024-08-06
- Last updated
- 2025-01-19
- Certified
- 2025-01-19
Frequently asked questions
- What is Jason Osowski's NPI number?
- Jason Osowski's National Provider Identifier (NPI) is 1538999248, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Osowski's specialty?
- Jason Osowski is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Jason Osowski located?
- Jason Osowski's practice location on file with NPPES is 13222 Chapman Ave, Garden Grove, CA 92840-4414.
- What is Jason Osowski's phone number?
- The practice phone number listed in the NPPES registry for Jason Osowski is (714) 703-9492.
- Is Jason Osowski's NPI active?
- Yes — Jason Osowski's NPI (1538999248) is active in the NPPES registry as of the last update on 2025-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.