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Addison Internal Medicine logo

Promoting health by treating the whole person.

Serving all Dallas-Ft. Worth Communities

Our Practice

The internal medicine doctors and staff at Addison Internal Medicine provide advanced primary medical care in Dallas, Texas. Our top-rated internists and staff provide compassionate primary health care that promotes health and wellness.


At Addison Internal Medicine, we have the experience and expertise to properly diagnose and treat acute illnesses and manage chronic diseases, with a focus on preventive care. We refer patients to medical specialists as needed and work closely with those specialists to optimize your health. 

Same-Day and Next-Day Appointments Available!

Our History

Addison Internal Medicine was founded by internal medicine specialists Dr. J. Shaun Murphy, Dr. Quynh Ton-That, and Dr. Tri T. Nguyen. As a medical group, we aim to offer Dallas-area residents access to the highest quality internal medicine services. 

The primary care providers on our Addison Internal Medicine team are among the highest-rated in Dallas-Ft. Worth. When you visit our office, you receive expert medical care and outstanding customer service from healthcare professionals dedicated to helping you achieve your best health.

Dr. J. Shaun Murphy, Dr. Quynh Ton-That, and Dr. Tri Nguyen
left to right: Dr. J. Shaun Murphy, Dr. Quynh Ton-That, Dr. Tri Nguyen

Celebrating our 10th anniversary, the healthcare providers and staff at Addison Internal Medicine proudly announce our recent relocation to a new, state-of-the-art facility designed to accommodate our patients and growing team. With an on-site lab and x-ray services, we offer comprehensive care under one roof, making healthcare more accessible and convenient for the members of our Dallas, TX, community and the surrounding areas.

Our Services

As Addison’s top internists, our doctors provide complete care in a clean, comfortable, and welcoming environment. Whether performing a mole removal procedure or providing dietary advice to a diabetes patient, our doctors offer the best in personalized medical care.

At Addison Internal Medicine, we take the time to get to know your unique medical history and patiently listen to your current health concerns to deliver the best possible diagnoses, recommendations, and medical solutions.


We accept nearly all major insurance plans.
Please call our office to see if we are in-network. 

**Please call our office to verify insurance coverage prior to scheduling or attending an office visit.

See What Patients Are Saying About Us

Outstanding facility. Courteous and professional staff. It was remarkably personal, nothing felt rushed, and yet I was out of there in an hour for a full physical. Lab on site, web access to results. For me this is a totally different experience that I’ve ever had at a doctor's office.

Self-Verified Patient

Google Reviews

Everyone is so friendly and accommodating. I am always amazed at how well the staff recognizes me and remembers the details of my story. They take the time to really listen to what you have to say, ask questions and follow up with me.

Self-Verified Patient

Efficient appointment scheduling and check-in. Fast service to see the nurse or doctor for annual checkup exam, flu shot, EKG and blood work. Knowledgeable and personal medical staff who didn't come across as rushed. Overall excellent!

Self-Verified Patient


Schedule An Appointment

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Our internal medicine specialists are currently accepting new patients
Call us to schedule your appointment or conveniently book your appointment online!

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