About Us

SarahAbout our Practice

Doctors of Osteopathic Medicine (DO) are trained Medical Doctors who practice an “integrated whole person” approach. Merging their knowledge of anatomy and physiology, DOs recognize that, because all of our bodies’ systems are interconnected, if illness or injury is present in one part of the body, it is likely impacting other parts of the body as well.

We have been recognized as a top concierge practice of 2016 in “Concierge Medicine Today.” Read about it here. We have also been recognized by the American Registry as one of America’s Most Honored Professionals for 2016.

Learn more about Osteopathic Medicine and the distinctions between an MD and a DO.

Dr. Sarah Mildred Gamble, DO

Dr. Sarah Mildred Gamble obtained her Medical Degree in Osteopathic Medicine from the Kansas City University of Medicine and Biosciences in 2004. She completed her residency training in Internal Medicine at the Westchester County Medical Center in Valhalla, New York.

She currently serves on the Board of the federal NFP organization, Friends in Africa through which she and a team of volunteers have traveled to Senegal and Kenya to provide free medical and dental care since 2003. She also assists The Stamford Hospital Foundation Board raising awareness and funds for the healthcare needs of our local underserved population and, volunteers her services twice a month at the AmeriCares Free Clinic located in South Norwalk, CT.


ErinErin Olson, APRN
Greenwich Pure Medical welcomed Advanced Nurse Practitioner, Erin Olson, in February of 2015.   Erin is a 2011 graduate of Columbia University with a specialty in Family Medicine.  A San Diego native, she moved to New York for graduate school (2011) and subsequently practiced primary care for adults and children at the William F. Ryan Community Center in NY.  When she is not caring for her growing patient base at GPM, Erin practices at New York Presbyterian Hospital in the Emergency Room.

As a Family NP, Erin uses her knowledge of primary and urgent care to give her patients the best possible attention.  In recent years, she has been the recipient of the Columbia University Community Service Award, and is a member of the NY State Nursing Association and Emergency Nursing Association.


Beanca Bastien
Phlebotomist and Medical/Office Administrator
Beanca joined Greenwich Pure Medical in October of 2014 and is quickly taking over the practice!  Beanca is an accredited phlebotomy technician and is currently continuing her education to become a certified Emergency Medical Technician.   On weekends she volunteers at AmeriCares Free Clinic drawing blood (fun fact) where she originally met Dr. Gamble!