About Thrive APC 2018-03-13T02:44:36+00:00

Get to know us at Thrive APC…

…Where our mission is

To educate and empower patients, and create a true medical home where the doctor and team provide care based on passion and responsibility, virtues that cannot be dictated by any third-party health plan.

…And our vision is

A new standard of primary care where comprehensive and personalized health management is available at an affordable cost.

And where we always strive to be…


At Thrive APC, we believe the first step to providing top quality health care lies in paying attention.

  • Attention to detail. Attention to the big picture.
  • Attention to the past and what it can teach us. Attention to the future and the potential it holds.
  • Attention to scientific research so that we can stay informed. Attention to intuition, because a clinical impression often relies on that ‘gut feeling.’
  • Attention to the population. Attention to each patient.

Maintaining awareness in this way takes time and commitment. These principles are all at the heart of our philosophy and contribute to the quality that we are determined to deliver to our patients.


We treat our patients like family and believe that excellent doctoring involves more than understanding disease — it means understanding YOU. Our objective is to LISTEN without judgment and create a plan for better health based on what we hear, paired with sound medical knowledge.


True health contains so much more than meets the eye.  At Thrive APC, the very basis of our name is our commitment to do more than merely treat or avert illness or injury — rather to guide patients toward an experience of life lived to the fullest.  If an ailment befalls you, of course we will pull out the stops to address it.  But beyond this, we will teach best practices for prevention with evidence-based lifestyle counseling in areas such as smoking cessation, diet and exercise counseling, and stress management, just to name a few.  Your health and well-being are our Number One Priority for as long as your are our patient.

Mary A. Medeiros, MD, MPH

Despite an abiding love for music, Dr. Medeiros (better known to several patients as “Dr. Mary”) came from a family of physicians and knew she was headed for a career in medicine from an early age. With a Bachelor’s degree in Music, she led and participated in choirs and singing groups at every opportunity throughout her higher education. But she remembers the moment at Loma Linda University School of Medicine in Southern California, where she obtained her MD, when she knew primary care was her calling:

“During my Surgery rotation I saw a patient in clinic with a severe diabetic foot infection. It was my job that day to deal with his foot, possibly planning for amputation, but he had no primary doctor to manage his poorly controlled diabetes, which didn’t sit well with me. It was suddenly clear that what I wanted was to care for the whole patient.”

After completing Internal Medicine residency at UMass Memorial Medical Center in Worcester, Massachusetts, Dr. Mary pursued a second board certification in Preventive Medicine, earning a Masters of Public Health (MPH) from UMass Amherst with a concentration on Epidemiology along the way. An underlying burden to care for the underserved led her to consider correctional (prison) health, but marriage and family became a new priority in the meantime. She redirected her focus to instead become an academic hospitalist at her training ground in UMass, where found the educational role incredibly fulfilling, although the hospital setting left something to be desired: a long-term relationship with patients. In search of this, she landed at Reliant Medical Group in Milford, MA, at last in the field of Primary Care. After a few years building up a complex and interesting panel of patients she cared for deeply, Dr. Mary felt crushed by the increasing administrative tasks making it seem impossible to do justice to medical practice while upholding the priority of her family, that is, until she discovered Direct Primary Care.

Dr. Mary is well known for ‘turning off the clock’ when she enters an exam room, a method that does not mix well with the ‘burn and churn’ pace of traditional primary care. Looking patients in the eye and connecting with the full story surrounding an injury or illness are the hallmarks of how she approaches diagnosis and management. She feels education is a much more powerful therapeutic tool than are prescriptions, and teaches at every opportunity, considering patients to be her students now. She also keeps her passion for music alive by singing and playing the guitar at local Open Mics from time to time, but her first and last passions by far and away are her husband and two energetic sons.