About
Dr. Diana Trister, DO serves as Founder and Medical Director of TriStar Health Center in Northborough, MA. She holds dual board certifications in Family Medicine and Sports Medicine. Her Family Medicine certification grounds her in preventive, continuous care for patients across all ages. Her Sports Medicine certification adds non-surgical expertise in musculoskeletal recovery and functional restoration.
Dr. Trister integrates Direct Primary Care with Regenerative and Functional Medicine to address the full picture of each patient's health. She approaches treatment as a genuine partnership, listening carefully and involving patients in every clinical decision. Her work spans chronic disease management, hormonal imbalances, metabolic disorders, musculoskeletal pain, and weight management. She also performs Prolotherapy, PRP therapy, Osteopathic Manipulation, and IV Vitamin Therapy. Patients consistently describe her as a communicator who traces health problems to their root causes across multiple body systems, not just isolated symptoms.
Education & Training
Doctor of Osteopathic Medicine
Certifications
Conditions Treated
Who is Dr. Trister right for?
Dr. Trister is a strong fit for adults seeking a primary care physician who goes beyond symptom management. Patients dealing with chronic conditions, hormonal imbalances, or metabolic issues benefit from her functional medicine approach. She also serves patients with musculoskeletal pain, sports injuries, or mobility concerns through her Sports Medicine board certification. Anyone who values direct physician access and collaborative treatment decisions will find her practice a natural home.
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Frequently Asked Questions
Dr. Trister treats a wide range of conditions including chronic disease, hormonal imbalances, metabolic disorders, musculoskeletal pain, sports injuries, PMS, and weight management concerns. She also supports gut microbiome health and metabolic optimization through her functional medicine work.
Yes. Dr. Trister holds board certifications in both Family Medicine and Sports Medicine. Her Family Medicine certification covers preventive and continuous care for the whole family. Her Sports Medicine certification focuses on non-surgical treatment of musculoskeletal issues.
Dr. Trister treats every visit as a genuine discussion rather than a one-way consultation. She listens carefully, involves patients in treatment decisions, and works to identify root causes by considering how multiple body systems interact. Her appointments run up to 60 minutes to support that depth of evaluation.
Yes. Dr. Trister performs Prolotherapy, Neural Prolotherapy, Platelet Rich Plasma therapy, Osteopathic Manipulation, and IV Vitamin Therapy in her office. She also offers Semaglutide weight loss injections, hormone optimization, and peptide therapy.
Dr. Trister earned her Doctor of Osteopathic Medicine degree, which trains physicians in hands-on manipulation techniques alongside conventional medicine. She applies Osteopathic Manipulation Treatment to relieve pain, address structural imbalances, and support injury healing.
Yes. Dr. Trister is board certified in Sports Medicine and focuses on non-surgical resolution of musculoskeletal issues. She treats sports injuries and works to restore function through targeted regenerative and hands-on therapies.
Dr. Trister uses functional medicine to identify root causes behind hormonal, metabolic, and gut health issues. Her functional work includes hormone optimization, gut microbiome evaluation, metabolic optimization, and peptide therapy. She tailors each plan to the individual patient's biology and health goals.
Yes. DPC members can contact Dr. Trister directly by text or email. She provides this direct access as a core part of the membership, so patients do not have to wait for a scheduled visit to ask questions or address concerns.
Doctor profile last updated April 10, 2026