Leonard Clark, CERTIFIED ALCOHOL &
NPI 1518226216 · Addiction (Substance Use Disorder) Counselor · Portland, OR
Leonard Clark, CERTIFIED ALCOHOL & is a Addiction (Substance Use Disorder) Counselor provider in Portland, OR (NPI 1518226216).
Provider details
- NPI number
- 1518226216
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CERTIFIED ALCOHOL &
- 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
14 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
- 2012-05-15
- Last updated
- 2012-05-15
Frequently asked questions
- What is Leonard Clark's NPI number?
- Leonard Clark's National Provider Identifier (NPI) is 1518226216, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Clark's specialty?
- Leonard Clark is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Leonard Clark located?
- Leonard Clark's practice location on file with NPPES is 4134 N. Vancouver Ave., Suite 303c, Portland, OR 97217-2900.
- What is Leonard Clark's phone number?
- The practice phone number listed in the NPPES registry for Leonard Clark is (503) 593-7764.
- Is Leonard Clark's NPI active?
- Yes — Leonard Clark's NPI (1518226216) is active in the NPPES registry as of the last update on 2012-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.