Tri County Internal Medicine has a medical staff dedicated to providing the best possible healthcare for our patients. Each of our healthcare providers (physicians , physician assistants, and nurse practitioners) have extensive education, training, and experience in caring for patients. All of our providers are board certified. To learn more about a provider, click on a name or photo below. All of our doctors are DOs (Doctors of Osteopathy). We believe in treating the person as a whole, rather than any one specific symptom. Our emphasis is on helping our patients live healthier lives. Just like our doctors, our Nurse Practitioners (NPs) and Physician Assistants (PAs) are fully certified to assess patients, diagnose conditions, order diagnostic exams, and develop individualized treatment plans. Our team provides fast, effective and affordable care for non-life threatening illnesses.
Robert Dambach, D.O.
Specialty: Internal Medicine
Degree: Doctor of Osteopathic Medicine
Language: English
Gender: Male
Bio: After graduating from the Southeastern College of Osteopathic Medicine, Dr. Dambach completed his Internal Medicine residency at Charity Hospital in New Orleans, LA. In September of 1990, Dr. Dambach returned to the Buford area and started his own independent medical practice in Sugar Hill, GA. In addition to his work as a physician at Tri County Internal Medicine, Dr. Dambach currently serves as a physician and board member of Salude Rehab in Suwanee, and he was elected to the Emory CIN Board starting in 2021.
Christopher Borrego, D.O.
Specialty: Internal Medicine
Degree: Doctor of Osteopathic Medicine
Languages: English, Spanish
Gender: Male
Bio: Dr. Christopher Borrego is a board-certified internal medicine practitioner at Tri County Internal Medicine, P.C. since 2004. He attended medical school at the New York College of Osteopathic Medicine in Old Westbury, New York, and completed his residency at Grady Memorial Hospital in Atlanta. Dr. Borrego became a partner in the practice in 2009.
Dr. Borrego works part-time with our practice, and the majority of the available appointments with him are Telehealth appointments.
Mary Ostaszewski, FNP-C
Specialty: Family Medicine
Degree: Master of Science in Nursing
Language: English
Gender: Female
Bio: Mary Ostaszewski, FNP-C completed her Bachelors of Science in Nursing from Boston College in 1996. She worked as a nurse for twelve years in hospitals in both Florida and Georgia, in neurology and orthopedics. While working at Northside Forsyth, Mary attended the University of North Georgia in Dahlonega, where she earned her Masters of Science in Nursing in 2007. Mary has been a family nurse practitioner at Tri County Internal Medicine since 2007. In her free time, Mary enjoys traveling and spending time with her family.
Jorge Montero, NP-C
Specialty: Family Medicine
Degree: Master of Science in Nursing
Languages: English, Spanish
Gender: Male
Bio: Jorge Montero is a Family Nurse Practitioner nationally certified by the American Academy of Nurse Practitioners. He started in nursing in 2008 as a licensed practical nurse; he then completed his RN at Pasco-Hernando State College in Florida; obtained his Bachelor from Western Governors University, and then, completed his Master of Science in Nursing with a concentration in Family Practice at South University.
Jorge is bilingual in English/Spanish and has a strong patient care background. He has many years of experience working in clinical settings such as inpatient/outpatient surgery (OR), acute (ICU), and even mental health. He has worked for health systems such as BayCare in Florida, and the last seven years at Northside Hospitals in Atlanta, Forsyth, Duluth, and Gwinnett. He comes to Tri-County Internal Medicine, PC passionate about providing excellent care to patients, looking forward to helping improve the community’s health, and focusing on primary care and preventive health.
Jorge lives in Sugar Hill, GA. He enjoys hiking, biking, and spending time with his family.
Caitlyn Haygood, PA-C
Specialty:
Degree: Master of Physician Assistant Studies
Language: English
Gender: Female
Bio: Caitlyn Haygood is a nationally board certified Physician Assistant (PA) through the NCCPA. She is a Buford native who is excited to serve the community as a primary care PA. Caitlyn received her Bachelor of Science in Exercise Physiology at Valdosta State University and then went on to obtain her Masters in Physician Assistant Studies at South College. Caitlyn is passionate about patient centered care and looks forward to helping patients achieve their healthcare goals.
Maira Ramirez Hansen, PA-C
Specialty:
Degree: Master of Physician Assistant Studies
Languages: English, Spanish
Gender: Female
Bio: Maira Ramirez Hansen, PA-C, grew up in Claxton, GA. She is a first generation college graduate and first in her family to join the military. She completed her Bachelors of Science in Biology in 2020 from Georgia Southern University. During her time at GSU she studied biology abroad in Ecuador. She graduated with her Master’s of Physician Assistant studies from Philadelphia College of Osteopathic Medicine in July 2023 in which she held the Diversity Chair position for her class. Prior to completing her Master’s degree, Maira worked in dialysis as a patient care technician and volunteered in a low income health clinic as a nursing assistant. She is a Marine Corps Veteran and enjoys the mountains, cooking, traveling and spending time with her family and four dogs.
For more information on types of healthcare providers, please click here: https://medlineplus.gov/ency/article/001933.htm”>https://medlineplus.gov/ency/article/001933.htm
Para mas información sobre tipos de profesionales de la salud, haga clic aqui: https://medlineplus.gov/spanish/ency/article/001933.htm”>https://medlineplus.gov/spanish/ency/article/001933.htm