William Riley
NPI 1720796691 · Addiction (Substance Use Disorder) Counselor · El Cajon, CA
William Riley is a Addiction (Substance Use Disorder) Counselor provider in El Cajon, CA (NPI 1720796691).
Provider details
- NPI number
- 1720796691
- 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
3 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
- 2022-11-09
- Last updated
- 2022-11-09
- Certified
- 2022-11-09
Frequently asked questions
- What is William Riley's NPI number?
- William Riley's National Provider Identifier (NPI) is 1720796691, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Riley's specialty?
- William Riley is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William Riley located?
- William Riley's practice location on file with NPPES is 1400 N Johnson Ave Ste 101, El Cajon, CA 92020-1651.
- What is William Riley's phone number?
- The practice phone number listed in the NPPES registry for William Riley is (619) 807-4165.
- Is William Riley's NPI active?
- Yes — William Riley's NPI (1720796691) is active in the NPPES registry as of the last update on 2022-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.