DIANE LOUISE MERCER CASAC-T
NPI 1598985301
Counselor - Addiction (Substance Use Disorder) in Wyandanch, NY

Q: What is Diane Mercer's NPI number?

The NPI number for Diane Mercer is 1598985301. It was assigned to this individual provider in the NPPES registry on April 26, 2007.

Q: What is Diane Mercer's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Q: When was this NPI record last updated?

The NPPES record for Diane Mercer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 26, 2007

240 LONG ISLAND AVE # A, WYANDANCH, NY 11798(631) 920-8250(631) 920-8251 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Diane Louise Mercer Casac-t NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANE LOUISE MERCER CASAC-T (NPI 1598985301) is an individual addiction (substance use disorder) provider in Wyandanch, New York, licensed in New York (18272) and active in the NPI registry since April 2007.

NPPES Registry Identity

NPI1598985301

Entity TypeIndividualFemale

Primary Taxonomy101YA0400X

Provider Legal NameDIANE LOUISE MERCERCredential: CASAC-T

Location Address240 LONG ISLAND AVE # AWyandanch, NY 11798-3123

Mailing Address34 King StWyandanch, NY 11798-4412 · (631) 920-8250 · Fax (631) 920-8251

Phone(631) 920-8250

Fax(631) 920-8251

Sole ProprietorNo

Enumeration DateApril 26, 2007

Last NPPES UpdateJuly 8, 2007

✔ NPI 1598985301 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

License✔ Licensed in NY · 18272

240 LONG ISLAND AVE # A, Wyandanch, NY 11798

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diane Mercer's NPI number?

The NPI number for Diane Mercer is 1598985301. It was assigned to this individual provider in the NPPES registry on April 26, 2007.

Where is Diane Mercer located?

Diane Mercer practices at 240 Long Island Ave # A, Wyandanch, NY 11798. The listed phone number is (631) 920-8250.

What is Diane Mercer's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Diane Mercer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.