WEST HOUSTON INTERNAL MEDICINE ASSOCIATES PA
NPI 1730343047
Internal Medicine in Katy, TX

Q: What is West Houston Internal Medicine Associates PA's specialty?

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

Active since July 16, 2008CLIA 45D2280513 · Accreditation

21238 KINGSLAND BLVD, KATY, TX 77450(832) 321-4962 Get Directions Write a Review

NPPES record last updated: May 16, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 16, 2024, Dec 7, 2023 (2 updates tracked since 2023).

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About West Houston Internal Medicine Associates Pa NPPES

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

WEST HOUSTON INTERNAL MEDICINE ASSOCIATES PA (NPI 1730343047) is a healthcare organization registered as an internal medicine in Katy, Texas and active in the NPI registry since July 2008. The organization holds an CLIA Accreditation certificate valid through April 1, 2028, maintains a secondary practice location in Katy, and lists Karen Thampoe, President, as its authorized official.

NPPES Registry Identity

NPI1730343047

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameWEST HOUSTON INTERNAL MEDICINE ASSOCIATES PA

Location Address21238 KINGSLAND BLVDKaty, TX 77450-5898

Mailing Address21238 Kingsland BlvdKaty, TX 77450-5898 · (832) 321-4962 · Fax (832) 787-1332

Phone(832) 321-4962

Organization SubpartNo

Authorized OfficialKaren ThampoePresident · (832) 321-4962

Enumeration DateJuly 16, 2008

Last NPPES UpdateMay 16, 20242 updates tracked since enumeration

NPPES CertifiedMay 16, 2024

✔ NPI 1730343047 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

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.

Also ListedClinical Medical LaboratoryTaxonomy 291U00000X

21238 KINGSLAND BLVD, Katy, TX 77450

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Secondary Practice Location 1

Location 1705 S Fry Rd, STE 105Katy, TX 77450-2251 · Phone (281) 500-8176 · Fax (281) 500-8178

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)

West Houston Internal Medicine Associates Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 3 clinicians reassign Medicare billing to West Houston Internal Medicine Associates PA, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Karen Thampoe, M.D.

Internal Medicine

NPI 1750390092

21238 KINGSLAND BLVD
Katy, TX 77450

(832) 321-4962

✔ PECOS✔ Accepts MedicareSame address

Basti Thampoe, M.D.

Internal Medicine

NPI 1063421303

7322 SOUTHWEST FWY SUITE 160
Houston, TX 77074

(713) 532-6884

✔ PECOS✔ Accepts Medicare14 mi

Edcheril Benny, MD

Psychiatry

NPI 1376656728

2100 WEST LOOP S SUITE100
Houston, TX 77027

(713) 590-2700

✔ 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 of Accreditation 45D2280513

West Houston Internal Medicine Associates PA · Katy, TX

Active · expires Apr 1, 2028

CLIA Number45D2280513

Laboratory TypePhysician Office

Certificate Effective DateApril 2, 2026

Certificate Expiration DateApril 1, 2028

Laboratory DirectorDr. Shaiju K. Vareed

Laboratory Phone(832) 520-1982

Laboratory LocationWest Houston Internal Medicine Associates PA21238 Kingsland Blvd, Katy, TX 77450

CLIA data matches this NPI record on: Address Name

This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

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 West Houston Internal Medicine Associates PA's NPI number?

The NPI number for West Houston Internal Medicine Associates PA is 1730343047. It was assigned to this organization in the NPPES registry on July 16, 2008.

Where is West Houston Internal Medicine Associates PA located?

West Houston Internal Medicine Associates PA is located at 21238 Kingsland Blvd, Katy, TX 77450. The listed phone number is (832) 321-4962.

What is West Houston Internal Medicine Associates PA's specialty?

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

Is West Houston Internal Medicine Associates PA enrolled in Medicare?

Yes. West Houston Internal Medicine Associates PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through West Houston Internal Medicine Associates PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to West Houston Internal Medicine Associates PA, in Internal Medicine and Psychiatry. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does West Houston Internal Medicine Associates PA hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 45D2280513) is associated with this NPI, valid through April 1, 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 West Houston Internal Medicine Associates PA was last updated on May 16, 2024. 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.