Jeffrey Seif
NPI 1134645187 · Addiction (Substance Use Disorder) Counselor · Los Angeles, CA
Jeffrey Seif is a Addiction (Substance Use Disorder) Counselor provider in Los Angeles, CA (NPI 1134645187).
Provider details
- NPI number
- 1134645187
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- C22841214 (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
8 yrs 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
- 2017-08-21
- Last updated
- 2017-08-21
Frequently asked questions
- What is Jeffrey Seif's NPI number?
- Jeffrey Seif's National Provider Identifier (NPI) is 1134645187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Seif's specialty?
- Jeffrey Seif is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Jeffrey Seif located?
- Jeffrey Seif's practice location on file with NPPES is 5675 W Olympic Blvd, Los Angeles, CA 90036-4712.
- What is Jeffrey Seif's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Seif is (323) 965-1365.
- Is Jeffrey Seif's NPI active?
- Yes — Jeffrey Seif's NPI (1134645187) is active in the NPPES registry as of the last update on 2017-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.