HOUSTON ADVANCED SURGICAL SERVICES, LLC
NPI 1689236341
Clinical Medical Laboratory in Conroe, TX

Active since July 02, 2019CLIA 45D2302935 · Waiver
1110 N LOOP 336 W STE 410-E, CONROE, TX 77301(936) 337-3565(936) 260-0265 Get Directions Write a Review

NPPES record last updated: December 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 11, 2025, Apr 30, 2024, Jul 5, 2019 (3 updates tracked since 2019).

About Houston Advanced Surgical Services, Llc NPPES

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

HOUSTON ADVANCED SURGICAL SERVICES, LLC (NPI 1689236341) is a healthcare organization registered as a clinical medical laboratory in Conroe, Texas and active in the NPI registry since July 2019. The organization holds a CLIA Waiver certificate valid through April 16, 2028 and lists Dorothy M Mitchell, Lab Director, as its authorized official.

NPPES Registry Identity

NPI1689236341
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameHOUSTON ADVANCED SURGICAL SERVICES, LLC
Location Address1110 N LOOP 336 W STE 410-EConroe, TX 77301-1193
Mailing Address1110 N Loop 336 W Ste 410-eConroe, TX 77301-1193 · (936) 337-3565 · Fax (936) 260-0265
Fax(936) 260-0265
Organization SubpartNo
Authorized OfficialDorothy M MitchellLab Director · (832) 322-6713
Enumeration DateJuly 2, 2019
Last NPPES UpdateDecember 11, 20253 updates tracked since enumeration
NPPES CertifiedDecember 11, 2025
NPI 1689236341 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
Also ListedTechnician, Pathology · PhlebotomyTaxonomy 246RP1900X
Also ListedClinic/Center · GeneticsTaxonomy 261QG0250X
Also ListedPhysician Assistant · SurgicalTaxonomy 363AS0400X
1110 N LOOP 336 W STE 410-E, Conroe, TX 77301

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

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 45D2302935

Houston Advanced Surgical Services, LLC · Conroe, TX
Active · expires Apr 16, 2028
CLIA Number45D2302935
Laboratory TypeTesting Site
Certificate Effective DateApril 17, 2026
Certificate Expiration DateApril 16, 2028
Laboratory DirectorDorothy M. Mitchell
Laboratory Phone(936) 337-3565
Laboratory LocationHouston Advanced Surgical Services, LLC1110 N Loop 336 W Suite 410-E, Conroe, TX 77301
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pathology (Clinical Laboratory Director, Non-physician)
1110 N LOOP 336 W STE 410-E
CONROE, TX 77301

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 Advanced Surgical Services, LLC's NPI number?

The NPI number for Houston Advanced Surgical Services, LLC is 1689236341. It was assigned to this organization in the NPPES registry on July 2, 2019.

Where is Houston Advanced Surgical Services, LLC located?

Houston Advanced Surgical Services, LLC is located at 1110 N Loop 336 W Ste 410-E, Conroe, TX 77301. The listed phone number is (936) 337-3565.

What is Houston Advanced Surgical Services, LLC's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Does Houston Advanced Surgical Services, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2302935) is associated with this NPI, valid through April 16, 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 Houston Advanced Surgical Services, LLC was last updated on December 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.