Steven Shirk, 16464-RAC
NPI 1669254744 · Addiction (Substance Use Disorder) Counselor · Fullerton, CA
Steven Shirk, 16464-RAC is a Addiction (Substance Use Disorder) Counselor provider in Fullerton, CA (NPI 1669254744).
Provider details
- NPI number
- 1669254744
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- 16464-RAC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 16464-RAC (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
2 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
- 2023-10-16
- Last updated
- 2023-10-18
- Certified
- 2023-10-18
Frequently asked questions
- What is Steven Shirk's NPI number?
- Steven Shirk's National Provider Identifier (NPI) is 1669254744, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Shirk's specialty?
- Steven Shirk is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Steven Shirk located?
- Steven Shirk's practice location on file with NPPES is 2100 W Commonwealth Ave # 2144, Fullerton, CA 92833-3019.
- What is Steven Shirk's phone number?
- The practice phone number listed in the NPPES registry for Steven Shirk is (951) 772-6211.
- Is Steven Shirk's NPI active?
- Yes — Steven Shirk's NPI (1669254744) is active in the NPPES registry as of the last update on 2023-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.