NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ann S Mercer MD PA

Internal Medicine Physician in Las Cruces, NM · enumerated 2007 · authorized official Ann Mercer, President.

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

National Provider Identifier

1164613261

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Ann S Mercer MD PA
Practice address 2801 Missouri Ave Ste 12, Las Cruces, NM, 88011
Phone (505) 522-6900
Fax (505) 522-8891
Enumeration date Aug 5, 2007
Last updated in NPPES Dec 6, 2007

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 84-79 (NM) Primary

Authorized official

Name Ann Mercer
Title President
Phone (505) 522-6900

Other identifiers

Identifier Type State Issuer
33407 Medicaid NM -

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

Who is the authorized official for Ann S Mercer MD PA?
NPPES lists Ann Mercer (President) as the authorized official for this organization.
What is the NPI number for Ann S Mercer MD PA?
The NPI for Ann S Mercer MD PA is 1164613261, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-06.