Michael G. Bertos, MD
Internal Medicine
Dr. Bertos completed his residency at Boston University Medical Center and received his medical degree from Boston University School of Medicine, in Boston, MA. Dr. Bertos is a member of the Massachusetts Medical Society and the American Medical Association, he joined Merrimack Valley Internal Medicine Associates in 2000.
Dr. Bertos’ care philosophy is focused on whole-person care and is described as energetic, positive and caring. His clinical interests include healthy lifestyle promotion – weight loss, diet, exercise, and smoking cessation. Outside of work Dr. Bertos enjoys spending time with his four children who are all involved in sports.
Louis Bresnick, MD
Internal Medicine
Dr. Bresnick is board certified in Internal Medicine. He completed his residency at Boston University Medical Center and received his medical degree from Boston University School of Medicine, in Boston, MA. Dr. Bresnick is a member of the Massachusetts Medical Society and the American College of Physicians, he joined Merrimack Valley Internal Medicine Associates in 2003.
Dr. Bresnick’s care philosophy centers on empowering patients to be active participants in the management of their medical conditions. His clinical interests cover a wide range of Internal Medicine subjects including: cardiac care, pulmonary, preventative medicine, infections, and diabetic management.
When he is not in the office, Dr. Bresnick likes to spend time with his family. He also enjoys all types of sporting activities.
Nicholas McAuley, MD
Internal Medicine
Dr. McAuley is board-certified in Internal Medicine and is accepting new patients. He completed his residency at Santa Barbara Cottage Hospital and received his medical degree from Keck School of Medicine, University of Souther California, in Los Angeles, CA. Dr. McAuley completed a Primary Care Sports Medicine Fellowship at UPMC Shadeyside in Pittsburg, PA in 2009. In the past, Dr. McAuley has been the team physician for the Massachusetts Pirates football team. Dr. McAuley joined Merrimack Valley Internal Medicine Associates in the fall of 2022.
Caitlin Waters, MD
Internal Medicine
Dr. Waters is board certified in Internal Medicine. She completed her residency at North Shore Medical Center – Partners Healthcare, in Salem, MA and received her medical degree from Ross University School of Medicine, in Dominica, West Indies. Dr. Waters completed a Primary Care Sports Medicine Fellowship at UMass Memorial Medical School in 2017-2018, and is a Team Physician at UMass Lowell. She is also a member of the American College of Physicians, the American College of Sports Medicine, and the American Medical Society of Sports Medicine.
Dr. Waters was inspired to become a physician by her father, who is also a physician. “Growing up around medicine and watching my dad interact with his patients certainly inspired my curiosity to become a doctor and in science. I was intrigued to explore how the body is made and how it works,” says Dr. Waters. “I felt proud when a stranger would walk up to my dad in public, shake his hand, and profess genuine gratitude for his help. I wanted to be able to help my community the way he has.” When asked what her care philisophy is she states “I like the long term relationships that can be built with patients, and I love teaching them how their bodies work or why they aren’t working. Once I can explain the how and why a patient may be experiencing certain symptoms, there is a greater likelihood of the patient understanding the healing process and treatment plan. I ultimately aim to optimize function and minimize symptoms.
Outside of work, Dr. Waters enjoys traveling, music, photography, hiking, Boston sports, movies, musicals, singing, dancing, comedy, and spending time with her family.
Guovana Aboukhater, AGNP-C
Internal Medicine
Guovana received her Bachelor of Science in Nursing from Thomas Jefferson University in Philedelphia, PA and her Master of Science in Nursing from the University of Pennsylvania, in Philadelphia, PA.
Ronald Makarutsa, AGPC-NP
Internal Medicine
Ronald received his doctorate in Nursing from Regis College in Weston, MA. He is a member of the ANCC and American Nurses Associates, both regionally and nationally.
When asked of his care philosophy he said “Perseverance, hard work and determination have been essential in getting me to where I am today despite the setbacks encountered along the way. I believe my diverse clinical experience as a Registered Nurse and my commitment to patient care makes me a great provider. I do not know it all, but I have a commitment to continued learning and development for professional practice by continually seeking new evidence-based research to apply to practice enhancing patient outcomes.” In regards to clinical interests his emphasis as a provider is on patient-centered care and helping his patients by empowering them to take care of their health through health promotion and education.
Robin Tompkins, FNP
Internal Medicine
Robin Tompkins received her Bachelor of Science in Nursing from Fitchburg State University in Fitchburg, MA and her Masters in Nursing from the University of Massachusetts in Lowell, MA. She is board-certified through the American Nurses Credentialing Center.
Robin has clinical interests in weight management, mental health, and involving patients to take an active participation in their healthcare and tailoring it to their lifestyle.