NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Wendy M. Mercer, Mental Health Counseling, Ncc, P.C.

Mental Health Counselor in Oakdale, NY · enumerated 2012 · authorized official Wendy Mercer, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1851663520

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Wendy M. Mercer, Mental Health Counseling, Ncc, P.C.
Practice address 1223 Montauk Hwy Ste B, Oakdale, NY, 11769
Phone (631) 872-5451
Fax (631) 319-1488
Enumeration date Jan 27, 2012
Last updated in NPPES Jan 27, 2012

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 004687-1 (NY) Primary

Authorized official

Name Wendy Mercer
Title President
Phone (631) 872-5451

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Wendy M. Mercer, Mental Health Counseling, Ncc, P.C.?
Wendy M. Mercer, Mental Health Counseling, Ncc, P.C. is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-27.