1. Home
  2. Directory
  3. Texas
  4. Houston
  5. Internal Medicine
  6. NPI Profile

HOUSTON NEPHROLOGY GROUP, P.A.
NPI 1174593032
Internal Medicine - Nephrology in Houston, TX

Active since January 24, 2006CLIA Certified · 2 labs
915 GESSNER RD STE 360, HOUSTON, TX 77024(713) 468-5440(713) 973-0778 Get Directions Write a Review

NPPES record last updated: May 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 21, 2026, Jan 21, 2026, Oct 18, 2017 (3 updates tracked since 2017).

About Houston Nephrology Group, P.a. NPPES

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

HOUSTON NEPHROLOGY GROUP, P.A. (NPI 1174593032) is a healthcare organization registered as a nephrology in Houston, Texas and active in the NPI registry since January 2006. The organization holds 2 active CLIA laboratory certificates, maintains 3 additional practice locations, and lists Anil U Sheth, President, as its authorized official.

NPPES Registry Identity

NPI1174593032
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameHOUSTON NEPHROLOGY GROUP, P.A.
Location Address915 GESSNER RD STE 360Houston, TX 77024-2540
Mailing Address915 Gessner Rd Ste 360Houston, TX 77024-2540 · (713) 468-5440 · Fax (713) 973-0778
Phone(713) 468-5440
Fax(713) 973-0778
Organization SubpartNo
Authorized OfficialAnil U ShethPresident · (713) 468-5440
Enumeration DateJanuary 24, 2006
Last NPPES UpdateMay 21, 20263 updates tracked since enumeration
NPPES CertifiedMay 21, 2026
✔ NPI 1174593032 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X
915 GESSNER RD STE 360, Houston, TX 77024
Open in Google Maps ↗

Secondary Practice Locations 3

Location 113219 Dotson Rd Ste 200Houston, TX 77070-4308 · Phone (281) 571-8090 · Fax (281) 571-8095
Location 223920 Katy Fwy Ste 555Katy, TX 77494-1341 · Phone (713) 468-5440 · Fax (713) 973-0778
Location 310425 Huffmeister Rd Ste 420Houston, TX 77065-3429 · Phone (281) 571-8090 · Fax (281) 571-8095

Other Identifiers 1

Medicaid084290801TX

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)

Houston Nephrology Group, 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 Houston Nephrology Group, P.A., which bills Medicare for the services they deliver. Of these, 9 practice at this address and 10 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 3

Nephrology6
Nurse Practitioner3
Internal Medicine1

Clinicians, nearest first (10)

Claude Capistrano
Nurse Practitioner
NPI 1093270894
915 GESSNER RD SUITE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Monica Guidry, FNP
Nurse Practitioner
NPI 1306596812
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Esther Lifafe, FNP-BC
Nurse Practitioner
NPI 1306100433
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Masood Mahmood, M.D
Internal Medicine
NPI 1205218054
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Redentor Roy, M.D.
Nephrology
NPI 1982674883
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Vijaya Sreenarasimhaiah, M.D.
Nephrology
NPI 1427028372
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Ariel Velasco, M.D.
Nephrology
NPI 1851361703
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Colville Williams
Nephrology
NPI 1861490005
915 GESSNER RD STE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts MedicareSame address
Anil Sheth, M.D.
Nephrology
NPI 1790755288
915 GESSNER RD #360
Houston, TX 77024
(713) 468-5440
✔ PECOSSame address
Adil Ali, M.D.
Nephrology
NPI 1396062600
915 GESSNER RD STE 360 SUITE 360
Houston, TX 77024
(713) 468-5440
✔ PECOS✔ Accepts Medicare0.1 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 2

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 45D0908242

Houston Nephrology Group · Houston, TX
Active · expires Oct 31, 2027
CLIA Number45D0908242
Laboratory TypePhysician Office
Certificate Effective DateNovember 1, 2025
Certificate Expiration DateOctober 31, 2027
Laboratory DirectorAnil V. Sheth MD
Laboratory Phone(713) 468-5440
Laboratory LocationHouston Nephrology Group915 Gessner Suite 360, Houston, TX 77024
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 45D1074570

Houston Nephrology Group · Cypress, TX
Active · expires Oct 1, 2027
CLIA Number45D1074570
Laboratory TypePhysician Office
Certificate Effective DateOctober 2, 2025
Certificate Expiration DateOctober 1, 2027
Laboratory DirectorAriel M. Velasco
Laboratory Phone(713) 468-5440
Laboratory LocationHouston Nephrology Group21214 Northwest Frwy, Cypress, TX 77429
CLIA data matches this NPI record on: 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 Houston Nephrology Group, P.A.'s NPI number?

The NPI number for Houston Nephrology Group, P.A. is 1174593032. It was assigned to this organization in the NPPES registry on January 24, 2006.

Where is Houston Nephrology Group, P.A. located?

Houston Nephrology Group, P.A. is located at 915 Gessner Rd Ste 360, Houston, TX 77024. The listed phone number is (713) 468-5440.

What is Houston Nephrology Group, P.A.'s specialty?

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

Is Houston Nephrology Group, P.A. enrolled in Medicare?

Yes. Houston Nephrology Group, P.A. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Houston Nephrology Group, P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 3 Medicare specialties reassign their Medicare billing to Houston Nephrology Group, 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 (6), Nurse Practitioner (3) and Internal Medicine (1). Of these, 9 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Houston Nephrology Group, P.A. hold CLIA laboratory certificates?

Yes. 2 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 Houston Nephrology Group, P.A. accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 2 other insurers list Houston Nephrology Group, 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 Houston Nephrology Group, P.A. was last updated on May 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.