Nikolaos M. Zacharias, MD

Practice locations

Addresses where Nikolaos M. Zacharias is enrolled with Medicare (CMS data updated October 2, 2026).

• 9180 Pinecroft Dr, Suite 300Shenandoah, TX 77380 (281) 419‑4600

Group practices

Medicare enrollment lists Nikolaos M. Zacharias as a member of this group (CMS data updated October 2, 2026).

• Obstetrix Medical Group of Texas Billing, Inc.27 clinicians in the group

Specialties

• Obstetrics/Gynecologyprimary

Find other Obstetrics/Gynecology doctors in Texas →

Other OB-GYNs in Shenandoah

Clinicians with the same Medicare primary specialty in Shenandoah, TX — not a recommendation.

• Natalie L. Drake, MD
• Steven S. Dalati, MD
• Heidi Lyn Stern, MD
• Rania Ibrahim, DO
• Christina Parmar, MD
• Beena M. Johnson, MD
• Francisco Labanca, MD
• Marco A. Giannotti, MD

All OB-GYNs in Shenandoah →

Other clinicians in Obstetrix Medical Group of Texas Billing, Inc.

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Aiyanna B. Anderson, MD
• Deana J. Hussamy, MD
• Jenifer Dinis Ballestas, MD
• Casey S. Yule, MD
• Chitra M. Iyer, MD
• Zachary S. Rubeo, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
3. Medicare Care Compare — official Medicare tool to look up clinicians