CORNERSTONE INTERNAL MEDICINE PLLC
NPI 1437591260
Internal Medicine in Mcallen, TX
About Cornerstone Internal Medicine Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CORNERSTONE INTERNAL MEDICINE PLLC (NPI 1437591260) is a healthcare organization registered as an internal medicine in Mcallen, Texas and active in the NPI registry since July 2013. The organization holds 3 active CLIA laboratory certificates, maintains 2 additional practice locations, and lists Yanick A Ekortarh, Medical Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Cornerstone Internal Medicine Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Cornerstone Internal Medicine PLLC, which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.
Clinicians, nearest first (5)
Laredo, TX 78043
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA 3
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 45D2351524
Cornerstone Internal Medicine PLLC · Pharr, TXCertificate of Waiver 45D2351526
Cornerstone Internal Medicine PLLC · Mcallen, TXCertificate of Waiver 45D2351535
Cornerstone Internal Medicine PLLC · Edinburg, TXFrequently 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 Cornerstone Internal Medicine PLLC's NPI number?
The NPI number for Cornerstone Internal Medicine PLLC is 1437591260. It was assigned to this organization in the NPPES registry on July 22, 2013.
Where is Cornerstone Internal Medicine PLLC located?
Cornerstone Internal Medicine PLLC is located at 1309 E Nolana Ave Ste A, Mcallen, TX 78504. The listed phone number is (956) 618-0348.
What is Cornerstone Internal Medicine PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Cornerstone Internal Medicine PLLC enrolled in Medicare?
Yes. Cornerstone Internal Medicine PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Cornerstone Internal Medicine PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Cornerstone Internal Medicine PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (3) and Family Practice (2). Of these, 3 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Cornerstone Internal Medicine PLLC hold CLIA laboratory certificates?
Yes. 3 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.
What insurance does Cornerstone Internal Medicine PLLC accept?
Health plans from Blue Cross and Blue Shield of Texas and WellPoint list Cornerstone Internal Medicine PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Cornerstone Internal Medicine PLLC was last updated on February 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.
# Cornerstone Internal Medicine Pllc · NPI 1437591260
Internal Medicine organization in Mcallen, Texas. Organization record, active in the CMS NPPES registry since July 22, 2013.
## Identity
- **NPI:** 1437591260 (Entity type: Organization)
- **Enumerated:** July 22, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Yanick Ekortarh, MEDICAL DIRECTOR
## Practice location
- **Address:** 1309 E NOLANA AVE STE A, Mcallen, TX 78504-6190
- **Phone:** (956) 618-0348
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 5 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (3), Family Practice (2); 3 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 26, 2025
- **CLIA laboratory certificates:** 3 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1437591260) · Data from the CMS NPPES public registry.