RIO GRANDE VALLEY ADULT & INTERNAL MEDICINE SPECIALISTS PLLC
NPI 1528039120
Internal Medicine in Weslaco, TX
About Rio Grande Valley Adult & Internal Medicine Specialists Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RIO GRANDE VALLEY ADULT & INTERNAL MEDICINE SPECIALISTS PLLC (NPI 1528039120) is a healthcare organization registered as an internal medicine in Weslaco, Texas and active in the NPI registry since January 2006. The organization holds a CLIA Waiver certificate valid through July 11, 2027, maintains a secondary practice location in Weslaco, and lists Pedro E. Mcdougal, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
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)
Rio Grande Valley Adult & Internal Medicine Specialists Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
14Medicare enrollment records show 14 clinicians reassign Medicare billing to Rio Grande Valley Adult & Internal Medicine Specialists PLLC, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 11 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 3
Clinicians, nearest first (14)
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
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 45D0950838
Rio Grande Valley Adult & Internal Medicine Specialists PA · Weslaco, 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 Rio Grande Valley Adult & Internal Medicine Specialists PLLC's NPI number?
The NPI number for Rio Grande Valley Adult & Internal Medicine Specialists PLLC is 1528039120. It was assigned to this organization in the NPPES registry on January 31, 2006.
Where is Rio Grande Valley Adult & Internal Medicine Specialists PLLC located?
Rio Grande Valley Adult & Internal Medicine Specialists PLLC is located at 1010 James St, Weslaco, TX 78596. The listed phone number is (956) 968-1621.
What is Rio Grande Valley Adult & Internal Medicine Specialists PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rio Grande Valley Adult & Internal Medicine Specialists PLLC enrolled in Medicare?
Yes. Rio Grande Valley Adult & Internal Medicine Specialists PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Rio Grande Valley Adult & Internal Medicine Specialists PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians in 3 Medicare specialties reassign their Medicare billing to Rio Grande Valley Adult & Internal Medicine Specialists 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 (6), Family Practice (5) and Internal Medicine (3). Of these, 7 practice at this address and 11 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Rio Grande Valley Adult & Internal Medicine Specialists PLLC hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 45D0950838) is associated with this NPI, valid through July 11, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Rio Grande Valley Adult & Internal Medicine Specialists PLLC accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma list Rio Grande Valley Adult & Internal Medicine Specialists 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 Rio Grande Valley Adult & Internal Medicine Specialists PLLC was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.
# Rio Grande Valley Adult & Internal Medicine Specialists Pllc · NPI 1528039120
Internal Medicine organization in Weslaco, Texas. Organization record, active in the CMS NPPES registry since January 31, 2006.
## Identity
- **NPI:** 1528039120 (Entity type: Organization)
- **Enumerated:** January 31, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Pedro Mcdougal, PRESIDENT
## Practice location
- **Address:** 1010 JAMES ST, Weslaco, TX 78596-6654
- **Phone:** (956) 968-1621 · **Fax:** (956) 447-0646
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 14 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (6), Family Practice (5), Internal Medicine (3); 7 practice at this address and 11 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 28, 2026
- **Other identifiers:** Medicaid 155526001 (TX); Medicaid 155526003 (TX)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1528039120) · Data from the CMS NPPES public registry.