John Walker, ASAC
NPI 1114047545 · Addiction (Substance Use Disorder) Counselor · Commack, NY
John Walker, ASAC is a Addiction (Substance Use Disorder) Counselor provider in Commack, NY (NPI 1114047545).
Provider details
- NPI number
- 1114047545
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- ASAC
- Sex
- Male
- Sole proprietor
- No
- License
- 12833 (NY)
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
19 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
- 2007-03-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Walker's NPI number?
- John Walker's National Provider Identifier (NPI) is 1114047545, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Walker's specialty?
- John Walker is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is John Walker located?
- John Walker's practice location on file with NPPES is 155 Indian Head Rd, Commack, NY 11725-2212.
- What is John Walker's phone number?
- The practice phone number listed in the NPPES registry for John Walker is (631) 543-6200.
- Is John Walker's NPI active?
- Yes — John Walker's NPI (1114047545) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.