Gregory Hagen
NPI 1205689338 · Addiction (Substance Use Disorder) Counselor · West Covina, CA
Gregory Hagen is a Addiction (Substance Use Disorder) Counselor provider in West Covina, CA (NPI 1205689338).
Provider details
- NPI number
- 1205689338
- 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
2 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
- 2024-04-09
- Last updated
- 2024-04-09
- Certified
- 2024-04-09
Frequently asked questions
- What is Gregory Hagen's NPI number?
- Gregory Hagen's National Provider Identifier (NPI) is 1205689338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Hagen's specialty?
- Gregory Hagen is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Gregory Hagen located?
- Gregory Hagen's practice location on file with NPPES is 1825 E Thelborn St, West Covina, CA 91791-1442.
- What is Gregory Hagen's phone number?
- The practice phone number listed in the NPPES registry for Gregory Hagen is (626) 915-3844.
- Is Gregory Hagen's NPI active?
- Yes — Gregory Hagen's NPI (1205689338) is active in the NPPES registry as of the last update on 2024-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.