What is Carlos Leon's NPI number?

Carlos Leon's National Provider Identifier (NPI) is 1790404382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Carlos Leon's specialty?

Carlos Leon is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).

Where is Carlos Leon located?

Carlos Leon's practice location on file with NPPES is 4820 Business Center Dr, Fairfield, CA 94534-1696.

What is Carlos Leon's phone number?

The practice phone number listed in the NPPES registry for Carlos Leon is (707) 224-8266.

Is Carlos Leon's NPI active?

Yes — Carlos Leon's NPI (1790404382) is active in the NPPES registry as of the last update on 2026-03-27.

IndividualActive

Carlos Leon, SUDCC II

NPI 1790404382 · Addiction (Substance Use Disorder) Counselor · Fairfield, CA

Carlos Leon, SUDCC II is a Addiction (Substance Use Disorder) Counselor provider in Fairfield, CA (NPI 1790404382).

Provider details

NPI number: 1790404382
Entity type: Individual
Primary specialty: Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
Credential: SUDCC II
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Addiction (Substance Use Disorder) CounselorPrimary101YA0400XLicense 7289 (CA)
Behavioral Health & Social Service Providers
Day Training/Habilitation Specialist373H00000X
Nursing Service Related Providers
Adult Companion372600000X
Nursing Service Related Providers

Profile Score

Established profile(62/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
3 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
3 documented practice locations

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

4820 Business Center Dr

Fairfield, CA 94534-1696

Phone: (707) 224-8266

Street-level locationGet directions

More CA providers

Mailing address

1621 Louisiana St

Vallejo, CA 94590-4744

Additional practice locations (2)

2310 1st St
Napa, CA 94559-2239
Phone: (707) 224-8266
2455 Bennett Valley Rd Ste B209
Santa Rosa, CA 95404-5669
Phone: (369) 217-1123

Enumerated: 2022-08-25
Last updated: 2026-03-27
Certified: 2026-03-27

Frequently asked questions

What is Carlos Leon's NPI number?: Carlos Leon's National Provider Identifier (NPI) is 1790404382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Carlos Leon's specialty?: Carlos Leon is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
Where is Carlos Leon located?: Carlos Leon's practice location on file with NPPES is 4820 Business Center Dr, Fairfield, CA 94534-1696.
What is Carlos Leon's phone number?: The practice phone number listed in the NPPES registry for Carlos Leon is (707) 224-8266.
Is Carlos Leon's NPI active?: Yes — Carlos Leon's NPI (1790404382) is active in the NPPES registry as of the last update on 2026-03-27.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.