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

Diane Louise Mercer, CASAC-T

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1598985301

Diane Louise Mercer, CASAC-T is an Addiction (Substance Use Disorder) Counselor in Wyandanch, New York. Licensed in New York. Registered with an NPI since 2007.

Licensed in
NY
In the registry since
2007

Practice location Address checks out

240 Long Island Ave # A
Wyandanch, NY 11798-3123
Phone: (631) 920-8250
Fax: (631) 920-8251
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 18272 (NY)

Record details

NPI number1598985301
Entity typeIndividual (Type 1)
GenderFemale
Credentials CASAC-T
Sole proprietorNo
NPI enumeratedApril 26, 2007
Last updated in NPPESJuly 8, 2007

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