Darren Leonardo, CAS
NPI 1770913485 · Addiction (Substance Use Disorder) Counselor · Merced, CA
Darren Leonardo, CAS is a Addiction (Substance Use Disorder) Counselor provider in Merced, CA (NPI 1770913485).
Provider details
- NPI number
- 1770913485
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CAS
- Sex
- Male
- Sole proprietor
- No
- License
- 02-138605 (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
12 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
- 2013-11-15
- Last updated
- 2014-02-11
Frequently asked questions
- What is Darren Leonardo's NPI number?
- Darren Leonardo's National Provider Identifier (NPI) is 1770913485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darren Leonardo's specialty?
- Darren Leonardo is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Darren Leonardo located?
- Darren Leonardo's practice location on file with NPPES is 3313 G St, Merced, CA 95340-0991.
- What is Darren Leonardo's phone number?
- The practice phone number listed in the NPPES registry for Darren Leonardo is (209) 381-6880.
- Is Darren Leonardo's NPI active?
- Yes — Darren Leonardo's NPI (1770913485) is active in the NPPES registry as of the last update on 2014-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.