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KIDNEY SPECIALISTS OF SOUTH TEXAS, P.A.
NPI 1699778068
Internal Medicine - Nephrology in Corpus Christi, TX

Active since May 31, 2005CLIA 45D0502553 · Microscopy
1521 S STAPLES ST, STE 601, CORPUS CHRISTI, TX 78404(361) 887-8451(361) 887-6126 Get Directions Write a Review

NPPES record last updated: December 18, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Kidney Specialists Of South Texas, P.a. NPPES

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

KIDNEY SPECIALISTS OF SOUTH TEXAS, P.A. (NPI 1699778068) is a healthcare organization registered as a nephrology in Corpus Christi, Texas and active in the NPI registry since May 2005. The organization holds a CLIA Microscopy certificate valid through May 27, 2027 and lists Shah F Islam, President, as its authorized official.

NPPES Registry Identity

NPI1699778068
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameKIDNEY SPECIALISTS OF SOUTH TEXAS, P.A.
Location Address1521 S STAPLES ST, STE 601Corpus Christi, TX 78404-3154
Mailing Address850 W Rio Salado Pkwy Ste 201Tempe, AZ 85281-3812 · (361) 887-8451 · Fax (361) 887-6126
Phone(361) 887-8451
Fax(361) 887-6126
Organization SubpartNo
Authorized OfficialShah F IslamPresident · (361) 887-8451
Enumeration DateMay 31, 2005
Last NPPES UpdateDecember 18, 2023
NPPES CertifiedDecember 18, 2023
✔ NPI 1699778068 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
1521 S STAPLES ST, Corpus Christi, TX 78404
Open in Google Maps ↗

Other Identifiers 1

Medicaid109425201TX

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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)

Kidney Specialists Of South Texas, P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

10

Medicare enrollment records show 10 clinicians reassign Medicare billing to Kidney Specialists Of South Texas, P.A., which bills Medicare for the services they deliver. Of these, 6 practice at this address and 9 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 2

Nephrology7
Nurse Practitioner3

Clinicians, nearest first (10)

Mary Garcia, MSN, AGACNP-C
Nurse Practitioner
NPI 1093541930
1521 S STAPLES ST STE 601
Corpus Christi, TX 78404
(361) 887-8451
✔ PECOS✔ Accepts MedicareSame address
Shah Islam, M.D.
Nephrology
NPI 1841293727
1521 S STAPLES ST STE 601
Corpus Christi, TX 78404
(361) 887-8451
✔ PECOS✔ Accepts MedicareSame address
William Shaffer, M.D.
Nephrology
NPI 1972506913
1521 S STAPLES ST STE 601
Corpus Christi, TX 78404
(361) 887-8451
✔ PECOS✔ Accepts MedicareSame address
Stefani Watson, NP
Nurse Practitioner
NPI 1275924607
1521 S STAPLES ST STE 601
Corpus Christi, TX 78404
(361) 887-8451
✔ PECOS✔ Accepts MedicareSame address
Fariba Zarinetchi, M.D.
Nephrology
NPI 1518960491
1521 S STAPLES ST STE 601
Corpus Christi, TX 78404
(361) 887-8451
✔ PECOS✔ Accepts MedicareSame address
Benjamin Lee, MD
Nephrology
NPI 1871784967
1521 S STAPLES ST STE 601
Corpus Christi, TX 78404
(361) 887-8451
✔ PECOS✔ Accepts MedicareSame address
Prabhat Singh, M.D.
Nephrology
NPI 1780972133
1501 S ALAMEDA ST
Corpus Christi, TX 78404
(361) 600-6578
✔ PECOS✔ Accepts MedicareSame address
Geeta Reddy, M.D.
Nephrology
NPI 1144223876
1315 SANTA FE ST STE 102
Corpus Christi, TX 78404
(361) 992-3500
✔ PECOS✔ Accepts Medicare0.3 mi
Rajaa Abdelrazeq
Nurse Practitioner
NPI 1922947324
6502 MACARENA DR
Corpus Christi, TX 78414
(361) 688-9040
✔ PECOS✔ Accepts Medicare9.3 mi
Karim Nooruddin, M.D.
Nephrology
NPI 1386647253
1711 W WHEELER AVE STE 1
Aransas Pass, TX 78336
(361) 886-3025
✔ PECOS✔ Accepts Medicare17 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 for Provider-Performed Microscopy Procedures (PPMP) 45D0502553

Kidney Specialist Of South Texas · Corpus Christi, TX
Active · expires May 27, 2027
CLIA Number45D0502553
Laboratory TypePhysician Office
Certificate Effective DateMay 28, 2025
Certificate Expiration DateMay 27, 2027
Laboratory DirectorFariba Zarinetchi
Laboratory Phone(361) 887-8451
Laboratory LocationKidney Specialist Of South Texas1521 S Staples Suite 601, Corpus Christi, TX 78404
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform 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 Kidney Specialists Of South Texas, P.A.'s NPI number?

The NPI number for Kidney Specialists Of South Texas, P.A. is 1699778068. It was assigned to this organization in the NPPES registry on May 31, 2005.

Where is Kidney Specialists Of South Texas, P.A. located?

Kidney Specialists Of South Texas, P.A. is located at 1521 S Staples St Ste 601, Corpus Christi, TX 78404. The listed phone number is (361) 887-8451.

What is Kidney Specialists Of South Texas, P.A.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Kidney Specialists Of South Texas, P.A. enrolled in Medicare?

Yes. Kidney Specialists Of South Texas, P.A. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Kidney Specialists Of South Texas, P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 2 Medicare specialties reassign their Medicare billing to Kidney Specialists Of South Texas, P.A.. 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 Nephrology (7) and Nurse Practitioner (3). Of these, 6 practice at this address and 9 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Kidney Specialists Of South Texas, P.A. hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 45D0502553) is associated with this NPI, valid through May 27, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Kidney Specialists Of South Texas, P.A. 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 and 1 other insurer list Kidney Specialists Of South Texas, P.A. 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 Kidney Specialists Of South Texas, P.A. was last updated on December 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.