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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

BYRON B. HOLT, MD, PA,
NPI 1730210501
Obstetrics & Gynecology in Houston, TX

Active since March 07, 2007CLIA 45D1098449 · Microscopy
18300 KATY FWY STE 315, HOUSTON, TX 77094(713) 365-2900(832) 408-8573 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 11, 2026, Apr 20, 2022 (2 updates tracked since 2022).

About Byron B. Holt, Md, Pa, NPPES

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

BYRON B. HOLT, MD, PA, (NPI 1730210501), doing business as Women's Health Care Center Of Houston, is a healthcare organization registered as an obstetrics & gynecology in Houston, Texas and active in the NPI registry since March 2007. The organization holds a CLIA Microscopy certificate valid through April 19, 2027 and lists Byron B Holt, Owner/president, as its authorized official.

NPPES Registry Identity

NPI1730210501
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameBYRON B. HOLT, MD, PA,
Location Address18300 KATY FWY STE 315Houston, TX 77094-1386
Mailing Address929 Gessner Rd., Suite 2225Houston, TX 77024-2501 · (713) 365-2900 · Fax (713) 984-6525
Phone(713) 365-2900
Fax(832) 408-8573
Organization SubpartNo
Authorized OfficialByron B HoltOwner/president · (713) 365-2935
Enumeration DateMarch 7, 2007
Last NPPES UpdateSeptember 11, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1730210501 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in TX · D2460
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedObstetrics & Gynecology · GynecologyTaxonomy 207VG0400X · License D2460 (TX)
18300 KATY FWY STE 315, Houston, TX 77094
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Other Names 1

Doing Business AsWomen's Health Care Center Of Houston

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 for Provider-Performed Microscopy Procedures (PPMP) 45D1098449

Women's Health Care Center Of Houston · Houston, TX
Active · expires Apr 19, 2027
CLIA Number45D1098449
Laboratory TypePhysician Office
Certificate Effective DateApril 20, 2025
Certificate Expiration DateApril 19, 2027
Laboratory DirectorTodd B. Holt
Laboratory Phone(713) 365-2900
Laboratory LocationWomen's Health Care Center Of Houston18300 Katy Freeway, Suite 315, Houston, TX 77094
CLIA data matches this NPI record on: Name 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.

Other Providers at the Same Location NPPES 5

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

DR. MARY ELIZABETH HIENAMAN MD
Obstetrics & Gynecology
18300 KATY FWY STE 315
HOUSTON, TX 77094
Harris County (713) 365-2900
DR. MICHAEL DANIEL HOLD MD
Obstetrics & Gynecology
18300 KATY FWY STE 315
HOUSTON, TX 77094
Harris County (713) 365-2900
DR. TODD MILES HOLT MD
Obstetrics & Gynecology
18300 KATY FWY STE 315
HOUSTON, TX 77094
Harris County (713) 365-2900
PREMIER OB/GYN OF WEST HOUSTON, LLP
Specialist
18300 KATY FWY STE 315
HOUSTON, TX 77094
Harris County (713) 464-2100
GABRIELA VALLADARES APRN, CNM
Midwife
18300 KATY FWY STE 315
HOUSTON, TX 77094
Harris County (713) 365-2900

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 Byron B. Holt, MD, PA,'s NPI number?

The NPI number for Byron B. Holt, MD, PA, is 1730210501. It was assigned to this organization in the NPPES registry on March 7, 2007. The provider is doing business as Women's Health Care Center of Houston.

Where is Byron B. Holt, MD, PA, located?

Byron B. Holt, MD, PA, is located at 18300 Katy Fwy Ste 315, Houston, TX 77094. The listed phone number is (713) 365-2900.

What is Byron B. Holt, MD, PA,'s specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Does Byron B. Holt, MD, PA, hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 45D1098449) is associated with this NPI, valid through April 19, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Byron B. Holt, MD, PA, was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days 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.