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DR. NICOLAS XYDAS WOMENS CENTER PA
NPI 1811917024
Obstetrics & Gynecology - Gynecology in Houston, TX

Active since July 20, 2006CLIA 45D0930144 · Microscopy
6500 NORTH FWY STE 110, HOUSTON, TX 77076(713) 695-0002(713) 695-0101 Get Directions Write a Review

NPPES record last updated: April 20, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Nicolas Xydas Womens Center Pa NPPES

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

DR. NICOLAS XYDAS WOMENS CENTER PA (NPI 1811917024) is a healthcare organization registered as a gynecology in Houston, Texas and active in the NPI registry since July 2006. The organization holds a CLIA Microscopy certificate valid through June 29, 2027 and lists Nicolas Xydas, President, as its authorized official.

NPPES Registry Identity

NPI1811917024
Entity TypeOrganization
Primary Taxonomy207VG0400X
Legal Business NameDR. NICOLAS XYDAS WOMENS CENTER PA
Location Address6500 NORTH FWY STE 110Houston, TX 77076-2941
Mailing Address6500 North Fwy Ste 110Houston, TX 77076-2941 · (713) 695-0002 · Fax (713) 695-0101
Phone(713) 695-0002
Fax(713) 695-0101
Organization SubpartNo
Authorized OfficialNicolas XydasPresident · (713) 695-0002
Enumeration DateJuly 20, 2006
Last NPPES UpdateApril 20, 2008
✔ NPI 1811917024 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207VG0400X
License✔ Licensed in TX · J7734
Definition
A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee
6500 NORTH FWY STE 110, Houston, TX 77076
Open in Google Maps ↗

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, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Nicolas Xydas Womens Center Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateTexasEnrollment IDO20061023000518Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Dr. Nicolas Xydas Womens Center PA, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Can Duong, M.D.
Obstetrics/Gynecology
NPI 1871536896
6500 NORTH FWY SUITE 110
Houston, TX 77076
(713) 695-0002
✔ PECOSSame address
Nicolas Xydas, M.D.
Obstetrics/Gynecology
NPI 1922034669
6500 NORTH FWY
Houston, TX 77076
(713) 695-0002
✔ PECOS✔ Accepts MedicareSame address
Jill Ash, WHNP-BC
Nurse Practitioner
NPI 1275873713
9200 PINECROFT DR STE 350
Shenandoah, TX 77380
(346) 320-5200
✔ PECOS✔ Accepts Medicare22 mi
Joel Ross, M.D.
Obstetrics/Gynecology
NPI 1336407824
201 LYONS AVE
Newark, NJ 07112
(973) 926-4882
✔ PECOS1,406 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) 45D0930144

Dr Nicolas Xydas Women's Center PA · Houston, TX
Active · expires Jun 29, 2027
CLIA Number45D0930144
Laboratory TypePhysician Office
Certificate Effective DateJune 30, 2025
Certificate Expiration DateJune 29, 2027
Laboratory DirectorNicolas P. Xydas MD
Laboratory Phone(713) 695-0002
Laboratory LocationDr Nicolas Xydas Women's Center PA6500 North Freway #110, Houston, TX 77076
CLIA data matches this NPI record on: 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 Dr. Nicolas Xydas Womens Center PA's NPI number?

The NPI number for Dr. Nicolas Xydas Womens Center PA is 1811917024. It was assigned to this organization in the NPPES registry on July 20, 2006.

Where is Dr. Nicolas Xydas Womens Center PA located?

Dr. Nicolas Xydas Womens Center PA is located at 6500 North Fwy Ste 110, Houston, TX 77076. The listed phone number is (713) 695-0002.

What is Dr. Nicolas Xydas Womens Center PA's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecology, with taxonomy code 207VG0400X.

Is Dr. Nicolas Xydas Womens Center PA enrolled in Medicare?

Yes. Dr. Nicolas Xydas Womens Center PA is registered in the Medicare PECOS enrollment system.

When is Dr. Nicolas Xydas Womens Center PA's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Texas, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Dr. Nicolas Xydas Womens Center PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Dr. Nicolas Xydas Womens Center PA. 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 Obstetrics/Gynecology (3) and Nurse Practitioner (1). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Dr. Nicolas Xydas Womens Center PA hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 45D0930144) is associated with this NPI, valid through June 29, 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 Dr. Nicolas Xydas Womens Center PA was last updated on April 20, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.