Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ewa Antonczyk MD LLC

Q: What is the NPI number for Ewa Antonczyk MD LLC?

The NPI for Ewa Antonczyk MD LLC is 1972713816, a Type 2 (organization) record in the CMS NPPES registry.

Internal Medicine Physician in Las Cruces, NM · enumerated 2007 · authorized official Katrina Ferrales, Credentialing Specialist.

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

National Provider Identifier

1972713816

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Registry record

Entity type Organization (Type 2)

Legal business name Ewa Antonczyk MD LLC

Practice address 3850 Foothills Rd, Ste. 9, Las Cruces, NM, 88011

Phone (575) 382-3700

Fax (575) 382-3701

Enumeration date May 22, 2007

Last updated in NPPES May 6, 2008

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2005-0482 (NM) Primary

Authorized official

Name Katrina Ferrales

Title Credentialing Specialist

Phone (575) 647-8366

Other identifiers

Identifier	Type	State	Issuer
64355381	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

What is the NPI number for Ewa Antonczyk MD LLC?

The NPI for Ewa Antonczyk MD LLC is 1972713816, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Ewa Antonczyk MD LLC?

NPPES lists Katrina Ferrales (Credentialing Specialist) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-06.