Find a Top Internist Near Me in Garland, TX – Book an Appointment Instantly

• Cardiovascular Disease
• Echocardiography - Eligible
• Nuclear Cardiology - Eligible
• Internal Medicine

• Texas Health Arlington Memorial
• Texas Health Heart & Vascular Hospital Arlington

• Fellowship, Cardiovascular Disease:  University of Texas Southwestern Cardiology Fellowship 
• Residency, Internal Medicine:  University of Texas Southwestern Medical School at Dallas 
• Medical School, MD Degree: University of Texas Southwestern Medical School at Dallas 
• Undergraduate, B.S. Neurobiology:  The University of Texas at Austin 

• UT Southwestern Alumni Scholarship (2010)
• Phi Beta Kappa Honor Society / Sigma Alpha Lambda Honor Society (2009)
• Walter B. Smith Jr. Scholarship (2008)
• Gerlad Walker Memorial Scholarship, Scottish Rite Memorial Scholarship, Garland Rotary Club Scholarship, Garland Health Science Scholarship, National MS Society Scholarship, Garland HS Hockey Scholarship (2006)

• HeartPlace HEB - Bedford Clinic
• Huguley /Burleson Clinic
  

• Interventional Cardiology
• Cardiovascular Disease
• Echocardiography
• Nuclear Cardiology
• Internal Medicine

• Glen Rose Medical Center
• Medfinity Health HEB
• Texas Health HEB
• Texas Health Huguley Hospital Fort Worth South

• Fellowship, Interventional Cardiology: Baylor College of Medicine, Houston, Texas
• Fellowship, Cardiovascular Disease: Baylor College of Medicine, Houston, Texas 
• Residency, Internal Medicine:  Baylor College of Medicine, Houston, Texas 
• Medical School, MD Degree: Texas Tech University Health Sciences Center School of Medicine, Lubbock, Texas
• Undergraduate: The University of Texas at Arlington, Arlington, Texas 

• Alpha Omega Alpha Honor Medical Society
• American College of Cardiology
• American Medical Association

• Ambulatory Care Achievement Award, Baylor College of Medicine (June 2014)
• Outstanding Student Award, Department of Internal Medicine, Texas Tech School of Medicine (2011)
• Alpha Omega Alpha Honor Medical Society (2010-present)
• University Scholar Award (2005-2006, 2006-2007)
• Honoree for College of Science Academic Excellence Reception (2003)
• The National Dean's List (2002-2007)
• Fort Worths Top Doctors of 2026

• Thamwiwat, A, Sudhakar D, Paniagua D, and Denktas AE. Suspected coronary fat embolism after liposuction. Catheter Cardiovasc Interv. 2018;1-4.

• Thamwiwat A, Levine GN. Chapter 14: Chest pains and Angina. Cardiology Secrets, 5th Edition. Ed. Glenn N. Levine. Philadelphia: Elsevier, 2018.125-134. Print.

• Thamwiwat A, Mejia R, Nutman TB, Bates JT. (2014). Strongyloidiasis as a cause of chronic diarrhea, identified using next-generation Strongyloides stercoralis-specific immunoassays. Curr Trop Med Rep. 2014; 1:145-147.

• Hira RS, Thamwiwat A, Kar B. Tandem. Heart placement for cardiogenic shock in acute severe mitral regurgitation and right ventricular failure. Catheter Cardiovascular Interv. 2014;82(2):319-322.

• Cardiovascular Disease
• Echocardiography
• Internal Medicine

• Baylor Scott & White Medical Center Plano
• Baylor Scott & White | The Heart Hospital Plano
• Medical City Dallas
• Medical City Heart Dallas
• Medical City Frisco
• Medical City Plano
• North Park Heart & Vascular Center

• ​Fellowship, Cardiovascular Disease: Thomas Jefferson University Hospital, Philadelphia, PA​
• Residency, Internal Medicine: Thomas Jefferson University Hospital, Philadelphia, PA
• Internship, Internal Medicine: Thomas Jefferson University Hospital, Philadelphia, PA
• Medical School, MD Degree: Emory University School of Medicine, Atlanta, GA
• Undergraduate, BS Biology: Emory University College, Atlanta, GA

• American College of Cardiology
• American Society of Echocardiography

• Interventional Cardiology
• Cardiovascular Disease
• Vascular Medicine
• Endovascular Medicine
• Internal Medicine

• Baylor Scott & White Medical Center Plano
• Baylor Scott & White | The Heart Hospital Plano
• Medfinity Health Plano
• Medical City Frisco
• Medical City Plano
• North Park Heart & Vascular Center
• Texas Health Allen
• Texas Health Dallas
• Texas Health Frisco
• Texas Health Plano

• Fellowship, Interventional Cardiology: Baylor University Medical Center, Dallas, TX
• Fellowship, Cardiovascular Disease: Baylor University Medical Center, Dallas, TX
• Residency, Internal Medicine:  Baylor University Medical Center, Dallas, TX
• Internship, Internal Medicine:  Baylor University Medical Center, Dallas, TX
• Medical School, MD Degree: UT Southwestern Medical School, Dallas, TX
• Undergraduate: Rice University, Houston, TX

• Medical Director of Cardiovascular Services - Texas Health Presbyterian Hospital - Plano
• Technology Committee Chair - Texas Health Resources Heart and Vascular Council
• Texas Super Doctors: Rising Star: 2013
• Texas Super Doctors: Rising Star: 2020
• Texas Super Doctors: Rising Star: 2021
• Texas Super Doctors: Rising Star: 2022
• Texas Super Doctors: Rising Star: 2023
• Texas Super Doctors: Rising Star: 2024
• Texas Super Doctors: Rising Star: 2025
• D Magazine Best Doctors in Collin County: 2020, 2021, 2022, 2023, 2024, 2026
• D Magazine Best Doctors: 2021

• Fox News, Carrollton restaurant worker meets team who saved her life after heart attack

• Peterman, Mark A., "Has This Study Finally Settled the Debate on Supplements?". texashealth.org. December 28, 2022. https://www.texashealth.org/areyouawellbeing/Heart-Health/Has-This-Study-Finally-Settled-the-Debate-on-Supplements

• Peterman, Mark A., "90% of People with Type 2 Diabetes Had High Risk for Heart Attack, Study Finds (Texas Health Plano)". healthline.com. November 16, 2020.

• Peterman, Mark A., "North Texas Cardiologists Notice Significant Increase in Unique Form of Cardiomyopathy". texashealth.org. August 11, 2020.

• Peterman, Mark A., "How Sugary Drinks Can Affect Cholesterol Levels and Heart Health". Healthline.com. February 26, 2020.

• Fazel PA, Peterman MA, Schussler JM. Three-Year Outcomes and Cost Analysis in Patients Receiving 64-Slice Computed Tomographic Coronary Angiography for Chest Pain. American Journal of Cardiology 2009:104:498-500.

• Peterman MA, Hamman BL, Schussler JM. 64-Slice CT angiography of saphenous vein graft anastomoses fashioned with interrupted nitinol clips. Annals of Thoracic Surgery 2007:83:1204.

• Peterman MA, Donsky MS, Matter GJ, Roberts WC. A Starr-Edwards model 6120 mechanical prosthesis in the mitral valve position for 38 years. American Journal of Cardiology 2006:97:756-758.

• Peterman MA, Farooq H, Roberts WC. Facts and principles learned at the 31st Annual Williamsburg Conference on Heart Disease. Baylor University Medical Center Proceedings 2004:17:106-115.

• Peterman MA, Roberts WC. Syndrome of protein C deficiency and anterior wall acute myocardial infarction at a young age from a single coronary occlusion with otherwise normal coronary arteries. American Journal of Cardiology 2003:92

• Peterman, MA. "5 Hidden Causes of Heart Disease. What can increase your risk and how to prevent it". nextavenue.org. Frieda Wiley, PharmD. December 12, 2018.

• Peterman, MA. "27 Daily Habits That Are Ruining Your Heart. TURNS OUT, THOSE LATE NIGHTS AT THE OFFICE ARE PRETTY BAD FOR YOUR TICKET". bestlifeonline.com. Ashley Moor. June 12, 2019.

• Peterman, MA. "Vitamin D Won’t Lower Risk of a Heart Attack, But There Are Still Reasons to Take It". healthline.com. George Citroner. June 19, 2019

• Cardiovascular Disease
• National Board of Echocardiography
• Vascular Ultrasound (RPVI credential)
• Internal Medicine

• Baylor Scott & White Medical Center Plano
• Baylor Scott & White | The Heart Hospital Plano
• Medfinity Health Plano

• Fellowship, Cardiovascular Disease: University of Rochester/Strong Memorial Hospital, Rochester, NY
• Residency, Internal Medicine: University of Rochester/Strong Memorial Hospital, Rochester, NY
• Medical School, MD Degree: Washington University School of Medicine, St. Louis, MO 
• Undergraduate, BS Biological Sciences: Stanford University, Stanford, CA

• Echocardiography - transthoracic and transesophageal
• Stress Testing
• Invasive Cardiology - diagnostic cardiac catheterization, including from the radial (wrist) approach
• Vascular Ultrasound - Peripheral Arterial Disease (PAD) Treatment and Peripheral Vascular Disease (PVD) Screening, including Carotid Artery Ultrasound, Ankle-Brachial Index (ABI), and Abdominal Aorta Ultrasound
• Nuclear Cardiology
• Preventive Cardiology - Management of risk factors such as high blood pressure and cholesterol, Coronary Calcium Score
• Cardiomyopathy
• Congestive Heart Failure - Cardiology Consultation
• Arrhythmias - Cardiac Rhythm Devices, EKGs, Cardioversions, and ILRs

• D Magazine's Best Doctors in Collin County: 2026
• D Magazine's Best Doctors in Collin County: 2025
• D Magazine's Best Doctors in Collin County: 2024
• Texas Monthly's Super Doctors (Rising Stars): 2020, 2021, 2022
• Young Award for outstanding teaching and compassionate care, 2010
• Distinguished Alumni Scholarship, full tuition for four years, Washington University School of Medicine
• Alpha Omega Alpha, Washington University School of Medicine
• Graduated with Honors, Distinction, and Phi Beta Kappa, Stanford University
• Fox Award, for outstanding performance as an undergraduate in Biological Sciences and contributions to research and teaching, Stanford University
• Excellence in Teaching Award, for outstanding performance as a course assistant, Stanford University

• Chief Fellow, University of Rochester, 2012-2013
• Fellow of the American College of Cardiology (FACC)

• John E. Reuter and John C. Teeters, Chapter 18: Preoperative Cardiovascular Risk Assessment for Non-cardiac Surgery; Manual of Outpatient Cardiology; Editors JD Bisognano, R Beck, R Connell; Springer; 2012. 445-464

• Michael W. Fong and John E. Reuter. Right Ventricular Tumor and Thrombus. Journal of the American College of Cardiology. 2008. 52(19):1598

• Grand Rounds, Department of Medicine, University of Rochester. Transcatheter Aortic Valve Replacement for Severe Aortic Stenosis. November 13, 2012
• ACC 2011 -- New Orleans, LA. External Multicenter Validation of the Mehran Risk Score for Contrast-Induced Nephropathy. April 4, 2011

• Cardiovascular Disease
• Internal Medicine

• Baylor Scott & White Heart and Vascular Hospital - Dallas
• Baylor University Medical Center
• Methodist Charlton Medical Center

• Fellowship, Cardiology: Plaza Medical Center of Fort Worth, Ft Worth, TX 
• Residency, Internal Medicine: Plaza Medical Center of Fort Worth, Ft Worth, TX 
• Internship, Internal Medicine (Specialty Track): Plaza Medical Center of Fort Worth, Ft Worth, TX 
• Medical School, Doctor of Osteopathic Medicine: Nova Southeastern University College of Osteopathic Medicine, Ft. Lauderdale, FL 
• Undergraduate, Bachelor of Science (Summa Cum Laude): Barry University, Miami Shores, FL 

• American College of Cardiology
• American College of Osteopathic Internists
• American Osteopathic Association
• Texas Medical Association
• Texas Osteopathic Medical Association

• Interventional Cardiology
• Cardiovascular Disease
• Echocardiography
• Internal Medicine

• Interventional Cardiology Fellowship - University of Texas Health Science Center in Houston
• Cardiovascular Disease Fellowship - University of Texas Health Center in Houston
• Internal Medicine Residency - University of Texas Health Science Center in Houston
• Medical School - Universidad Central de Venezuela Luis Razetti Medical School

• English
• Spanish

Dr. Sam Abraham is an Internist located in Richardson Texas who has been practicing medicine for more than 15 years and is board certified in Internal Medicine. His medical philosophy is to treat the whole patient through both diagnosis and education, helping to provide patients with the tools and treatment they need to prevent disease and reverse negative health impacts.

Dr. Abraham is a firm believer in cost-effective healthcare, and his clinic has been designed to provide convenient access to medical care for prompt attention, diagnosis and treatment without unnecessary tests or delays.

Dr. Abraham is not only a compassionate professional with experience working with patients of all ages, but he’s also a respected medical leader and has been an Assistant Professor of Medicine at the University of North Texas Health Science Center, where he has trained hundreds of medical students to provide the best in medical care.

He received his bachelor’s degree with a major in Biology and minor in Respiratory Therapy, Magna Cum Laude, from Stephen F. Austin State University in Nacogdoches, Texas. He completed graduate studies at the University of North Texas Health Science Center in Fort Worth and received his M.D. from University of Health Sciences, St. Johns. He completed his Internal Medicine residency at Methodist Dallas Medical Center. In addition to his internal medicine expertise, Dr. Abraham is currently completing a certification in Integrative Holistic Medicine.

Prior to establishing Texas Primary Care Center, Dr. Abraham was part of the Internal Medicine Department at Parkland Memorial Hospital as well as at the Federal Medical Center of Carswell. He has served as an Associate Medical Director of Tarrant County Correctional facility and has spent the last several years teaching and supervising Internal Medicine residents, Family Medicine residents, and other medical students.

Caring for patients with accessible, personal, and cost-effective treatment is what Dr. Abraham enjoys most, which is why he has established a new private practice in the Richardson/Plano area. Dr. Abraham has privileges at Methodist Richardson Medical Center and Plano Medical Center. He lives in Richardson with his wife and two children. He is very involved with his church, and he enjoys traveling and music.

Gary E. Goff, MD, has come to be known as one of the leading physicians serving Dallas and North Texas families. His combination of reputable training, extensive experience, and compassionate service have set him apart, leading to long-term relationships with his patients built on trust and integrity. He specializes in the diagnoses, treatment, and prevention of chronic illnesses, cardiac health, cancer, diabetes, preventative medicine, common ailments, and more.

Dr. Goff attended Hardin Simmons University in Abilene, Texas, where he completed his undergraduate degree. Following undergraduate studies, Dr. Goff moved on to Dallas to attend the University of Texas Southwestern Medical School to complete his medical degree in 1993. He underwent his internship and residency training at Parkland Memorial Hospital and St. Paul University Hospital, both prestigious medical facilities.

Following the completion of his residency program, Dr. Goff gained extensive experience serving in many roles throughout the healthcare system. He has worked in affiliation with Baylor University Medical Center in Dallas, served as the medical director for both the Baylor Ellis County Community Health Clinic as well as the Pleasant Manor Nursing Center in Waxahachie, Texas, and created his own vibrant medical practice. Throughout these experiences, he has come to be seen as a caring and dedicated physician committed to community wellness.

Dr. Goff is board certified with the American Board of Internal Medicine and is a proud member of the Texas Medical Association, the Medical Group Management Association (MGMA), the American Medical Association, the Texas Medical Directors Association, and the Dallas County Medical Society. In addition, he has received numerous awards and recognitions, including the Republican Gold Medal Award for 2002 and 2003 and the Courtesy Staff Physician at Baylor University Medical Center.

Munir Hazbun, MD, is a board-certified pulmonologist, critical care specialist, and sleep medicine physician serving patients in Dallas, Texas. He joined Southwest Pulmonary Associates in 2008 and brings a wealth of experience and a patient-centered approach to the diagnosis and treatment of complex respiratory and sleep disorders.

Originally from Santiago, Chile, Dr. Hazbun earned his medical degree from the prestigious Universidad de Chile. He completed his internship at Texas Tech Health Science Center in El Paso and went on to pursue fellowship training at Baylor College of Medicine in Houston, where he specialized in Pulmonary, Critical Care, and Sleep Medicine.

Dr. Hazbun is quadruple board certified by the American Board of Internal Medicine in Pulmonary Medicine, Sleep Medicine, and Internal Medicine. His clinical interests include persistent cough, shortness of breath, lung cancer, sarcoidosis, and complex sleep-related breathing disorders. Known for his thoughtful, comprehensive care, he works closely with each patient to identify the root cause of their symptoms and create personalized treatment plans.

Fluent in both English and Spanish, Dr. Hazbun is committed to serving the diverse needs of the Dallas community. He has been named among D Magazine's Best Doctors and recognized as a Texas Super Doctor from 2010 to 2015 and again in 2025. He has also served as a board member for the local chapter of the American Lung Association.

Outside of medicine, Dr. Hazbun enjoys spending time with his wife, Dr. Pilar Bescos, a family medicine physician, and their two children. His personal interests include biking, pickleball, golf, learning piano, gardening and traveling with his family.

Tayler Long, MD, is a board-certified pulmonologist at Southwest Pulmonary Associates in Plano, Texas. He is committed to providing excellent pulmonary and critical care medicine to the community. 

Dr. Long earned his Bachelor of Arts in Human Biology from Stanford University in Palo Alto, California, before completing his Doctor of Medicine at the University of California, San Diego School of Medicine. He went on to complete both his residency in Internal Medicine and his fellowship in Pulmonary and Critical Care Medicine at the prestigious UT Southwestern Medical School in Dallas, Texas.

In addition to his clinical training, Dr. Long holds a Master of Science in Healthcare Leadership and Management from UT Dallas, equipping him with the tools to lead effectively in today’s evolving healthcare landscape. His advanced education and years of experience allow him to offer expert care in managing complex lung diseases, respiratory failure, and critical illness.

Dr. Long joined Southwest Pulmonary Associates in 2007. He has served as President of the Medical Staff at Texas Health Plano and currently holds leadership roles on the Medical Executive Committee at Texas Health Frisco. He also serves as the Director of the ICU at Texas Health Frisco, reflecting his commitment to both patient care and institutional excellence. He is has been recognized as one of D Magazine's Best Docs repeatedly, most recently in 2025.

Outside of medicine, Dr. Long is a devoted husband and father. He is married and enjoys spending time with his three beautiful children.

Mark Robertshaw, MD, is a board-certified pulmonologist and critical care medicine specialist proudly serving patients in Plano, Texas. He joined Southwest Pulmonary Associates in 2023, bringing with him a wealth of clinical experience and a compassionate, patient-centered approach to care.

Dr. Robertshaw completed his fellowship in Pulmonary and Critical Care Medicine at UT Southwestern Medical Center in Dallas, Texas, where he was honored to serve as Chief Fellow during the 2022–2023 academic year. He completed his residency training at Duke University Hospital in Durham, North Carolina, and earned his medical degree from the University of Missouri in Columbia. His academic journey began at the University of Notre Dame in South Bend, Indiana, where he received his Bachelor of Science and developed a lifelong passion for Fighting Irish football.

Board certified by the American Board of Internal Medicine in both Pulmonary Medicine and Critical Care Medicine, Dr. Robertshaw is committed to helping patients manage a wide range of respiratory conditions with leading-edge diagnostic tools and individualized treatment plans. His dedication to community service has been recognized with prestigious honors, including the President’s Volunteer Service Award and the Congressional Award, both received in 2013.

Outside the clinic, Dr. Robertshaw enjoys spending quality time with his wife and daughter, golfing, and cheering on his alma mater during college football season. He looks forward to building long-lasting relationships with his patients and their families throughout the Plano community.

Anthony Ortegon, MD, is a board-certified pulmonologist, critical care specialist, and sleep medicine physician providing expert care to patients in Dallas, Texas. Since joining Southwest Pulmonary Associates in 2013, Dr. Ortegon has been dedicated to helping individuals manage a wide range of respiratory and sleep-related conditions with compassionate, evidence-based care.

Dr. Ortegon earned his Bachelor of Arts in Biology from Swarthmore College in Pennsylvania and went on to receive his Doctor of Medicine from Temple University in Philadelphia. He completed both his residency in Internal Medicine and his fellowship in Pulmonary and Critical Care Medicine at UT Southwestern Medical School in Dallas, one of the nation’s leading academic medical centers.

He is triple board certified by the American Board of Internal Medicine in Internal Medicine, Pulmonary Medicine and Critical Care Medicine. Dr. Ortegon specializes in the diagnosis and treatment of conditions such as asthma, COPD, interstitial lung disease, pulmonary hypertension, and sleep apnea. Dr. Ortegon has a special interest in the diagnosis of various lung pathologies requiring multiple advanced bronchoscopy procedures, including Ion robotic bronchoscopy. Overall, his clinical approach emphasizes clear communication, individualized care plans, and a strong commitment to improving his patients’ overall health and quality of life.

Known for his thoroughness and approachability, Dr. Ortegon values the long-term relationships he builds with his patients. He is proud to be part of the Southwest Pulmonary Associates team and to serve the Dallas community with integrity and expertise.