Daniel J. O'Leary, MD - UMass Memorial Health - Find a Doctor

Mar 20, 2022
UMass Memorial Medical Center

Welcome to the webpage of Daniel J. O'Leary, MD, a highly skilled and compassionate internal medicine physician serving patients in Leominster and the surrounding areas. With his vast experience and commitment to delivering comprehensive primary care, Dr. O'Leary is dedicated to providing personalized healthcare services to individuals of all ages.

Understanding Internal Medicine

Internal medicine is a specialized field of medicine that focuses on preventing, diagnosing, and treating a wide range of adult diseases. As an internal medicine doctor, Dr. O'Leary is equipped to handle complex medical conditions, manage chronic illnesses, and deliver preventive care. With a deep understanding of the interconnected systems within the body, he takes a holistic approach to healthcare, aiming to optimize the overall well-being of his patients.

Comprehensive Primary Care Services

At UMass Memorial Health, Dr. O'Leary provides comprehensive primary care services to patients in Leominster. This includes routine check-ups, preventive screenings, immunizations, and management of chronic conditions such as diabetes, hypertension, and heart disease. He believes in building strong, long-lasting relationships with his patients, empowering them with the knowledge and resources needed to make informed decisions about their health.

Dr. O'Leary's approach to primary care involves not only addressing immediate health concerns but also emphasizing the importance of preventive measures. He believes that early detection and proactive management of medical conditions are key to achieving optimal health outcomes.

Exceptional Patient Care

As a patient-centered physician, Dr. O'Leary is committed to providing exceptional care tailored to the individual needs of each patient. He takes the time to listen and understand their concerns, ensuring they feel heard and valued. With his warm and empathetic demeanor, he creates a supportive environment where patients can openly discuss their health issues.

Dr. O'Leary believes that effective communication is an essential aspect of developing a strong physician-patient relationship. He educates his patients about their medical conditions, treatment options, and lifestyle modifications, enabling them to actively participate in their healthcare decisions.

Education and Credentials

Dr. Daniel J. O'Leary obtained his medical degree from [Name of Medical School]. He subsequently completed his residency in Internal Medicine at [Name of Hospital]. With years of experience in primary care, Dr. O'Leary is well-versed in the latest medical advancements and evidence-based practices. He maintains active memberships in professional organizations, keeping himself updated with medical advancements and enhancing his skills.

Contact Information and Appointments

To schedule an appointment or learn more about the comprehensive primary care services offered by Dr. Daniel J. O'Leary, please visit the UMass Memorial Health website. You can find detailed contact information, including the clinic address, phone number, and convenient appointment scheduling options.


Dr. Daniel J. O'Leary is a highly accomplished and dedicated internal medicine physician providing top-quality primary care services in Leominster. With his extensive expertise, patient-centered approach, and commitment to excellence, he aims to improve the health and well-being of individuals throughout the community.

If you are seeking a compassionate and skilled internal medicine doctor, Dr. O'Leary is here to support you on your healthcare journey. Contact UMass Memorial Health today to schedule an appointment and experience personalized, comprehensive primary care at its finest.

Kevin Krumm
Dr. O'Leary is a fantastic doctor! 👨‍⚕️ Very knowledgeable and caring.
Oct 17, 2023