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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.

KAREN JUDITH MARTINEZ-CASTELLON MSN-FNP
NPI 1922765395
Nurse Practitioner - Family in Mcallen, TX

Active since November 20, 2021
501 N WARE RD, MCALLEN, TX 78501(956) 664-1234 Get Directions Write a Review

NPPES record last updated: September 15, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 15, 2026, Nov 20, 2021 (2 updates tracked since 2021).

About Karen Judith Martinez-castellon Msn-fnp NPPES

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

KAREN JUDITH MARTINEZ-CASTELLON MSN-FNP (NPI 1922765395) is an individual family provider in Mcallen, Texas, licensed in Texas (1040647) and active in the NPI registry since November 2021.

NPPES Registry Identity

NPI1922765395
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameKAREN JUDITH MARTINEZ-CASTELLONCredential: MSN-FNP
Location Address501 N WARE RDMcallen, TX 78501-8055
Mailing Address1706 Decilos Dr Apt BHarlingen, TX 78552-2986 · (423) 330-4579
Phone(956) 664-1234
Sole ProprietorNo
Enumeration DateNovember 20, 2021
Last NPPES UpdateSeptember 15, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2026
✔ NPI 1922765395 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in TX · 1040647
501 N WARE RD, Mcallen, TX 78501
Open in Google Maps ↗

Other Names 1

Other Name (5)Karen Judith Castellon

Other Providers at the Same Location NPPES 11

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

ENRIQUE CARRASCO ROJAS M.D.
Family Medicine
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 668-0044
TIFFANY PINALES PA-C
Physician Assistant (Medical)
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 668-0044
DR. VICTORIA A RODRIGUEZ-QUICK MD
Internal Medicine
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 668-0044
MRS. DEENIS GARCIA APRN-CNP
Nurse Practitioner (Family)
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 664-1234
MANUEL J SANCHEZ, MD, PA
Family Medicine
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 687-8531
MR. HECTOR HOMERO MONTEZ P.T., L.O.T.
Physical Therapist
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 668-0044
MRS. VYANNHE VELA-RAMIREZ P.A.-C
Physician Assistant (Medical)
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 687-8531
MANUEL J SANCHEZ M.D.
Family Medicine (Adult Medicine)
501 N WARE RD
MCALLEN, TX 78501
Hidalgo County (956) 668-0044

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 Karen Martinez-castellon's NPI number?

The NPI number for Karen Martinez-castellon is 1922765395. It was assigned to this individual provider in the NPPES registry on November 20, 2021. The provider is also known as Karen Judith Castellon.

Where is Karen Martinez-castellon located?

Karen Martinez-castellon practices at 501 N Ware Rd, Mcallen, TX 78501. The listed phone number is (956) 664-1234.

What is Karen Martinez-castellon's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

When was this NPI record last updated?

The NPPES record for Karen Martinez-castellon was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.