Main Office

  • 1301 20th Street #280
    Santa Monica, CA 90404
    Phone: (310) 829-6789
    Fax: (310)-315-0195
  • Office Hours:
    8:00 a.m.-5:00 p.m.
    Monday - Friday
    Maps & Directions

Endoscopy Center

  • 2336 Santa Monica Blvd #204
    Santa Monica, CA 90404
    Phone: (310) 453-4477
    Fax: (310) 453-4188
  • Procedure Hours:
    6:30 a.m. - 3:00 p.m.
    Monday - Friday
    Maps & Directions

Martha E. Hierro, M.D.

Home » Our Doctors » Martha E. Hierro, M.D.

In the field of gastroenterology, Dr. Hierro is what many would call a “rare find.” She is one of the few female gastroenterologists in Santa Monica and the surrounding areas. Her reputation has earned her a large male and female patient following. In 1987, Dr. Hierro completed UCLA’s School of Medicine joint M.D./M.P.H. program. She completed her internship and residency at Harbor UCLA Medical Center. In 1990, she went on to specialize while training at the UCLA Gastroenterology Fellowship program that she completed in 1993.

As a graduate of UCLA’s School of Medicine and School of Public Health, she commits herself to educating medically underserved communities and bridging the gap of healthcare disparities. During Colon Cancer Awareness month in March of 2002, she was featured in a telecast sponsored by the National Institutes of Health for the National Alliance for Hispanic Health, which was broadcasted entirely in Spanish. Dr. Hierro has been an active member of the Medical Executive Committee and former member of the Bioethics Committee at St. John’s Health Center. In 2004, she was also elected Treasurer at Saint John’s Health Center. Her professional affiliations include the American Gastroenterology Association, American Medical Association, American Society of Gastrointestinal Endoscopy, and the American College of Physicians

Dr. Hierro has been elected as one of the Best Doctors in America in 2005, 2006, 2007, 2008 and 2011. This is an honor bestowed upon her by her peers in the field of Gastroenterology. Dr. Hierro has been featured in “LA Magazine” as one of the top Specialists in Southern California.

Dr. Hierro’s gastrointestinal insight is further enhanced by her husband of more than 25 years, who is a Pediatric Gastroenterologist and Clinical Professor at UCLA. As a devoted mother of two, Dr. Hierro successfully manages the rigors of private practice and motherhood. She has proven to be a paragon of excellence for working mothers. Outside of patient care, Dr. Hierro enjoys volunteering at her children’s school and educating the public on colon cancer and digestive disorders at various healthcare seminars.