John Nestor, LADC 1
NPI 1144008343 · Addiction (Substance Use Disorder) Counselor · South Boston, MA
John Nestor, LADC 1 is a Addiction (Substance Use Disorder) Counselor provider in South Boston, MA (NPI 1144008343).
Provider details
- NPI number
- 1144008343
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- LADC 1
- Sex
- Male
- Sole proprietor
- No
- License
- 13180 (MA)
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
- 2023-09-19
- Last updated
- 2023-09-19
- Certified
- 2023-09-19
Frequently asked questions
- What is John Nestor's NPI number?
- John Nestor's National Provider Identifier (NPI) is 1144008343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Nestor's specialty?
- John Nestor is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is John Nestor located?
- John Nestor's practice location on file with NPPES is 210 Old Colony Ave, South Boston, MA 02127-2413.
- What is John Nestor's phone number?
- The practice phone number listed in the NPPES registry for John Nestor is (617) 268-5000.
- Is John Nestor's NPI active?
- Yes — John Nestor's NPI (1144008343) is active in the NPPES registry as of the last update on 2023-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.