Stephen Duffy, RADT-I
NPI 1932690344 · Addiction (Substance Use Disorder) Counselor · San Pedro, CA
Stephen Duffy, RADT-I is a Addiction (Substance Use Disorder) Counselor provider in San Pedro, CA (NPI 1932690344).
Provider details
- NPI number
- 1932690344
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- RADT-I
- Sex
- Male
- Sole proprietor
- No
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
8 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
- 2018-05-21
- Last updated
- 2018-05-21
Frequently asked questions
- What is Stephen Duffy's NPI number?
- Stephen Duffy's National Provider Identifier (NPI) is 1932690344, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Duffy's specialty?
- Stephen Duffy is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Stephen Duffy located?
- Stephen Duffy's practice location on file with NPPES is 270 W 14th St, San Pedro, CA 90731-4315.
- What is Stephen Duffy's phone number?
- The practice phone number listed in the NPPES registry for Stephen Duffy is (310) 519-8723.
- Is Stephen Duffy's NPI active?
- Yes — Stephen Duffy's NPI (1932690344) is active in the NPPES registry as of the last update on 2018-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.