Leonard Preuss
NPI 1700172541 · Addiction (Substance Use Disorder) Counselor · El Cajon, CA
Leonard Preuss is a Addiction (Substance Use Disorder) Counselor provider in El Cajon, CA (NPI 1700172541).
Provider details
- NPI number
- 1700172541
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
15 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
- 2011-06-20
- Last updated
- 2011-06-20
Frequently asked questions
- What is Leonard Preuss's NPI number?
- Leonard Preuss's National Provider Identifier (NPI) is 1700172541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Preuss's specialty?
- Leonard Preuss is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Leonard Preuss located?
- Leonard Preuss's practice location on file with NPPES is 1400 N Johnson Ave, El Cajon, CA 92020-1650.
- What is Leonard Preuss's phone number?
- The practice phone number listed in the NPPES registry for Leonard Preuss is (619) 442-0277.
- Is Leonard Preuss's NPI active?
- Yes — Leonard Preuss's NPI (1700172541) is active in the NPPES registry as of the last update on 2011-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.