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ADULT INTERNAL MEDICINE SPECIALIST
NPI 1679762884
Internal Medicine in San Antonio, TX

Active since October 24, 2007CLIA 45D1032020 · Waiver
7940 FLOYD CURL DR STE 600, SAN ANTONIO, TX 78229(210) 614-3723 Get Directions Write a Review

NPPES record last updated: October 24, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Adult Internal Medicine Specialist NPPES

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

ADULT INTERNAL MEDICINE SPECIALIST (NPI 1679762884) is a healthcare organization registered as an internal medicine in San Antonio, Texas and active in the NPI registry since October 2007. The organization holds a CLIA Waiver certificate valid through October 14, 2028 and lists Carlos E Alvarez-meraz, Phyiscian, as its authorized official.

NPPES Registry Identity

NPI1679762884
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameADULT INTERNAL MEDICINE SPECIALIST
Location Address7940 FLOYD CURL DR STE 600San Antonio, TX 78229-3907
Mailing AddressPo Box 790324San Antonio, TX 78279-0324 · (210) 614-3723
Phone(210) 614-3723
Organization SubpartNo
Authorized OfficialCarlos E Alvarez-merazPhyiscian · (210) 614-3723
Enumeration DateOctober 24, 2007
✔ NPI 1679762884 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · L1261
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
7940 FLOYD CURL DR STE 600, San Antonio, TX 78229
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Other Identifiers 2

Medicare PIN00816WTX
Medicare UPINH30002TX

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Adult Internal Medicine Specialist is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Adult Internal Medicine Specialist, which bills Medicare for the services this clinician delivers.

Clinician (1)

Carlos Alvarez, MD
Internal Medicine
NPI 1356450050
7434 LOUIS PASTEUR DR STE 109
San Antonio, TX 78229
(210) 614-3723
✔ PECOS✔ Accepts Medicare0.6 mi

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 45D1032020

Adult Internal Medicine Specialists · San Antonio, TX
Active · expires Oct 14, 2028
CLIA Number45D1032020
Laboratory TypePhysician Office
Certificate Effective DateOctober 15, 2026
Certificate Expiration DateOctober 14, 2028
Laboratory DirectorCarlos E. Alvarez-Meraz
Laboratory Phone(210) 614-3723
Laboratory LocationAdult Internal Medicine Specialists7940 Floyd Curl Drive Suite 600, San Antonio, TX 78229
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Adult Internal Medicine Specialist's NPI number?

The NPI number for Adult Internal Medicine Specialist is 1679762884. It was assigned to this organization in the NPPES registry on October 24, 2007.

Where is Adult Internal Medicine Specialist located?

Adult Internal Medicine Specialist is located at 7940 Floyd Curl Dr Ste 600, San Antonio, TX 78229. The listed phone number is (210) 614-3723.

What is Adult Internal Medicine Specialist's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Adult Internal Medicine Specialist enrolled in Medicare?

Yes. Adult Internal Medicine Specialist is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Adult Internal Medicine Specialist?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Adult Internal Medicine Specialist. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Adult Internal Medicine Specialist hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D1032020) is associated with this NPI, valid through October 14, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Adult Internal Medicine Specialist was last updated on October 24, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.