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Dr. Nikolaos Zacharias MD

Dr. Nikolaos Zacharias MD

High Risk Pregnancy (MFM) Specialist

Memorial Hermann Texas Medical Center
(832) 325-6516


Dr. Nikolaos Zacharias earned his medical degree at the National and Kapodistrian University of Athens School of Medicine in Greece. Subsequently, he completed his internship followed by his residency in obstetrics and gynecology through Baylor College of Medicine in Houston and his fellowship in maternal-fetal medicine at The University of Texas Medical Branch at Galveston.

Board certified in obstetrics and gynecology as well as maternal-fetal medicine, Dr. Zacharias has practiced medicine in Texas since1998.  His clinical interests include prenatal diagnosis, placenta accrete, fetal anomalies, fetal growth disorders, fluid disorders, preeclampsia, preterm labor and operative obstetrics for reproductive age women.

Dr. Zacharias specializes in prenatal and perinatal care for all expectant mothers. He believes in preventive care and encourages patients to take an active part in their health to achieve optimal outcomes for all pregnancies.  He offers evidence- based, compassionate medicine and incorporates ultrasound into prenatal and perinatal care. In addition to English, Dr. Zacharias speaks Spanish, French and Greek.

In addition to treating patients, Dr. Zacharias currently serves on the faculty of McGovern Medical School at UTHealth. He is a Fellow of the American College of Obstetricians & Gynecologists and a member of the Society for Maternal-Fetal Medicine, American Institute of Ultrasound in Medicine and International Society for Ultrasound in Obstetrics and Gynecology.

Bellaire residents, Dr. Zacharias and his wife have two children. In his free time, he enjoys swimming, basketball, Greek food, jazz and classical music as well as traveling.

Physician Details

Medical Education
National and Kapodistrian University of Athens Medical School, 1995
Internships & Residency
Baylor College of Medicine - Ob/Gyn, 2002
UTMB Galveston House Staff Office, 2005
PCP Number
Cities Served
Alief, Barker, Bellaire, Galena Park, Houston


ZIP Codes Served
77001, 77002, 77003, 77004, 77005, 77006, 77007


Insurance Accepted

  • AARP Medicare Complete
  • Aetna (Most Benefit Plans)
  • Aetna Medicare
  • Aetna Signature Administrators PPO
  • AHI Healthlink
  • Amerigroup Chip
  • Amerigroup MMP Perinatal*
  • Amerigroup Star
  • Amerigroup Star Plus
  • Amerivantage
  • Beechstreet
  • Blue Cross Blue Shield Texas
  • Blue Exchange PPO
  • Cigna (Most Benefit Plans)
  • Coastal Comp Healthnetworks PPO*
  • Coastal Comp Healthnetworks Work Comp
  • Community Health Choice
  • Community Health Choice Chip
  • Community Health Choice Marketplace Kelsey QHP
  • Community Health Choice Marketplace QHP
  • Community Health Choice Star
  • Corporate Remedies Worker's Comp*
  • Corvel Worker's Comp*
  • Coventry Health Care - PPO Network
  • Coventry Medicare Advantra
  • Evolutions Healthcare Systems - PPO Network*
  • Evolutions Healthcare Systems - Worker's Comp*
  • First Health - PPO Network
  • First Health - Worker's Comp
  • Galaxy Health Network
  • Healthsmart
  • Humana (Most Benefit Plans)
  • Humana Gold Choice PFFS
  • Humana Gold Plus HMO
  • Humana HMOx QHP Exchange
  • Humanachoice PPO Medicare
  • Independant Medical Systems
  • Injury Management Organization Worker's Comp*
  • Interplan Health Group (IHG)*
  • Medicaid Traditional
  • Medicare Traditional
  • Medicus International - PPO Network
  • Memorial Hermann Advantage HMO
  • Memorial Hermann Advantage PPO
  • Memorial Hermann Solutions
  • Multiplan
  • OccuNet PPO - PPO Network
  • Olympus (International) - PPO Network*
  • Political Subdivision Workers Comp Alliance*
  • Private Healthcare System
  • Reny Company Worker's Comp
  • Rockport - PPO Network*
  • Superior CHIP/Perinatal*
  • Superior Foster Care Program
  • Texas True Choice - PPO Network*
  • United Healthcare (Most Benefit Plans)
  • United Healthcare Chip
  • United Healthcare Chronic Complete
  • United Healthcare Dual Complete
  • United Healthcare Medicare Advantage
  • United Healthcare Star
  • United Healthcare Star Plus Perinatal*
  • United Healthcare TXMMP
  • US Family Health Plan
  • USA Managed Care Organization - PPO Network
  • USA Managed Care Organization - Worker's Comp*
  • Wellcare
  • WorkLink Worker's Comp

In The News

In the News

Anna Harvard - Vasa Previa Twins

Thankful for the Specialized Care that Saved Both of My Twins

During Anna Havard's pregnancy, one of her twins was diagnosed with vasa previa, a rare and life-threatening condition.

Read the Full Story »

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