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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. ANNA LOUISE CITLALI MERCIER CASAC-T
NPI 1275410946
Counselor - Addiction (Substance Use Disorder) in New York, NY

Active since August 16, 2025
369 LEXINGTON AVE RM 14A, NEW YORK, NY 10017(212) 204-8430(212) 600-1294 Get Directions Write a Review

NPPES record last updated: August 7, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 7, 2026, Aug 16, 2025 (2 updates tracked since 2025).

About Ms. Anna Louise Citlali Mercier Casac-t NPPES

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

MS. ANNA LOUISE CITLALI MERCIER CASAC-T (NPI 1275410946) is an individual addiction (substance use disorder) provider in New York, New York and active in the NPI registry since August 2025.

NPPES Registry Identity

NPI1275410946
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameMS. ANNA LOUISE CITLALI MERCIERCredential: CASAC-T
Location Address369 LEXINGTON AVE RM 14ANew York, NY 10017-6526
Mailing Address80 5th Ave Fl 6New York, NY 10011-8002 · (516) 261-2368
Phone(212) 204-8430
Fax(212) 600-1294
Sole ProprietorNo
Enumeration DateAugust 16, 2025
Last NPPES UpdateAugust 7, 20262 updates tracked since enumeration
NPPES CertifiedAugust 7, 2026
✔ NPI 1275410946 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
369 LEXINGTON AVE RM 14A, New York, NY 10017
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ERICA GABRIELLE LALOR
Student in an Organized Health Care Education/Training Program
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (212) 204-8430
ANNA LUZHKOVA
Student in an Organized Health Care Education/Training Program
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (212) 204-8430
JEANINE IERARDI
Counselor (Addiction (Substance Use Disorder))
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (866) 852-8708
DR. MICHELLE RITZ PSYD
Psychologist
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (212) 204-8430
MERCEDA CECELIA DEVOE
Student in an Organized Health Care Education/Training Program
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (212) 204-8340
EDEN SHERMAN PSYD
Psychologist (Clinical)
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (212) 204-8430
MS. DEMITRA KAMPAKIS
Student in an Organized Health Care Education/Training Program
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (212) 204-8430
DR. ASHLEY HALL-SIMMONDS PHD
Psychologist
369 LEXINGTON AVE RM 14A
NEW YORK, NY 10017
New York County (866) 791-0492

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 Anna Mercier's NPI number?

The NPI number for Anna Mercier is 1275410946. It was assigned to this individual provider in the NPPES registry on August 16, 2025.

Where is Anna Mercier located?

Anna Mercier practices at 369 Lexington Ave Rm 14A, New York, NY 10017. The listed phone number is (212) 204-8430.

What is Anna Mercier'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 Anna Mercier was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days 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.