John Chernack, CASAC-T
NPI 1457621328 · Addiction (Substance Use Disorder) Counselor · Staten Island, NY
John Chernack, CASAC-T is a Addiction (Substance Use Disorder) Counselor provider in Staten Island, NY (NPI 1457621328).
Provider details
- NPI number
- 1457621328
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CASAC-T
- Sex
- Male
- Sole proprietor
- Yes
- License
- 24627 (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
14 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
- 2012-01-09
- Last updated
- 2012-01-09
Frequently asked questions
- What is John Chernack's NPI number?
- John Chernack's National Provider Identifier (NPI) is 1457621328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chernack's specialty?
- John Chernack is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is John Chernack located?
- John Chernack's practice location on file with NPPES is 273 Heberton Ave, Staten Island, NY 10302-1809.
- What is John Chernack's phone number?
- The practice phone number listed in the NPPES registry for John Chernack is (717) 816-6589.
- Is John Chernack's NPI active?
- Yes — John Chernack's NPI (1457621328) is active in the NPPES registry as of the last update on 2012-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.