Dr. Barbara Lock is an experienced physician, board-certified in emergency medicine. Dr. Lock has clinical work experience in caring for patients of all ages, and she has academic and administrative work experience in evidenced based medicine, pathways design, quality, and pain. Dr. Lock went to Boston University School of Medicine and completed training at the Jacobi/Montefiore combined residency in Emergency... Read More about Barbara Lock, MD

Danny Lock, MD, is board certified in family medicine. Dr. Lock earned his medical degree from the Universidad Autonoma de Guadalajara School of Medicine in Mexico. He completed two internships: one at LA County-USC Medical Center, and another at UC Irvine Medical Center. He also completed a residency through the USC Family Medicine Residency Program. Dr. Lock really cares about... Read More about Danny Lock, MD

Brion J. Lock, M.D., graduated with a bachelor of arts degree from Kalamazoo College in Kalamazoo, Mich. He earned his medical degree from Wayne State University School of Medicine in Detroit, Mich. He completed his residency in internal medicine at the University of Alabama at Birmingham. Dr. Lock was chosen to serve as chief resident for one year after completion... Read More about Brion Lock, MD

Dr. Lock-O'Hanlon is originally from the Los Angeles area. She attended the University of California, San Diego, where she studied Psychology with a Neuroscience focus in addition to her pre-medical studies. She earned her medical degree at the University of Texas School of Medicine at San Antonio and completed her residency in Internal Medicine at Mount Sinai Beth Israel. In... Read More about Clarissa Lock-O'Hanlon, M.D.

With every patient, I strive to build a connection, establish trust and provide excellent medical care.

I am focused on patient centered care.

I believe in taking the time to truly listen to each patient’s story and provide care that is both compassionate and personalized. My focus is on prevention, education, and the use of advanced diagnostics to guide treatment, including cardiovascular screening for individuals at high risk. I have a strong background in cardiac imaging, nuclear cardiology, and cardiac critical care, as... Read More about Ankur Panchal, MD

My clinical focus includes complex valvular heart disease, pulmonary hypertension, and pericardial conditions. I earned my medical degree from AIIMS in New Delhi, completed my residency at the Mayo Clinic in Rochester, and pursued fellowships in cardiology and echocardiography at UAB and UCSF. I’m board certified in internal medicine, cardiology, echocardiography, and nuclear cardiology. I’m excited to be part of... Read More about Siddharth Singh, MD

Dr. Kristine Chen is a Family Medicine doctor at ARC Round Rock, and is accepting new patients in Round Rock, north and central Austin, and the surrounding areas.

I strongly believe in a patient-focused approach that integrates advanced technology with compassionate and individualized treatment. I strongly believe in a team approach as collaboration among multidisciplinary teams improves patient outcome. I also prioritize patient education and shared decision-making to empower patients to actively participate in their treatment and long-term overall health.

I believe in providing evidence-based care with a patient-centered approach. I want patients to fully understand their cardiac conditions, their specific risk factors and take part in formulating their treatment plans. I am also interested in incorporating preventative strategies to help patients make sustainable changes to take charge of their cardiovascular health.

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