Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Sean Duncan Mac Corkindale, LMSW

Individual provider Mental Health Counselor · NPI 1104461789

Sean Duncan Mac Corkindale, LMSW is a Mental Health Counselor in Northport, New York. Practices as a sole proprietor and works from 3 locations. Licensed in New York.

Licensed in
NY
In the registry since
2019
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

20 Northfield Dr
Northport, NY 11768-2413
Phone: (631) 371-3978
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 233 7th St Ste 200, Garden City, NY 11530-5747 — (516) 828-2622
  • 50 W Hawthorne Ave, Valley Stream, NY 11580-6220 — (516) 569-6600

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 107254 (NY)

Record details

NPI number1104461789
Entity typeIndividual (Type 1)
GenderMale
Credentials LMSW
Sole proprietorYes
NPI enumeratedNovember 7, 2019
Last updated in NPPESAugust 8, 2023
Certification dateAugust 8, 2023

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