John Mahon, LCSW
NPI 1033434212 · Clinical Social Worker · Ridge, NY
Enrolled with Medicare as Order and Referring Only - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mahon, LCSW is a Clinical Social Worker provider in Ridge, NY (NPI 1033434212).
Provider details
- NPI number
- 1033434212
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- R053620 (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
16 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
- 2010-03-31
- Last updated
- 2010-03-31
Frequently asked questions
- What is John Mahon's NPI number?
- John Mahon's National Provider Identifier (NPI) is 1033434212, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mahon's specialty?
- John Mahon is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is John Mahon located?
- John Mahon's practice location on file with NPPES is 38 Marc Drive, Ridge, NY 11961.
- What is John Mahon's phone number?
- The practice phone number listed in the NPPES registry for John Mahon is (631) 924-4411.
- Does John Mahon accept Medicare?
- John Mahon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Mahon's NPI active?
- Yes — John Mahon's NPI (1033434212) is active in the NPPES registry as of the last update on 2010-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.