Our Physicians

Brady L. Allen, M.D.

Dr. Allen was born and raised in Port Arthur, Texas. He graduated summa cum laude from the University of Texas at Austin in 1975. He attended Southwestern Medical School from 1975 to 1979. He did his Internship and Residency in Internal Medicine at Yale-New Haven Hospital.

He returned to Dallas to begin his private practice in the summer of 1982. Being a gay Internist in a large urban setting...

...read more
Dr. Allen was born and raised in Port Arthur, Texas. He graduated summa cum laude from the University of Texas at Austin in 1975. He attended Southwestern Medical School from 1975 to 1979. He did his Internship and Residency in Internal Medicine at Yale-New Haven Hospital.

He returned to Dallas to begin his private practice in the summer of 1982. Being a gay Internist in a large urban setting, he was one of the 1st physicians to diagnose and treat patients with HIV Disease. His many awards include the "Crystal Hope" award from AIDS-Interfaith Network, the "Aetna" award from DIFFA,  and the "Volunteer of the Year" award from  the AIDS-ARMS Network.

In December of 2007, all the AIDS Service Organizations honored his 25 years in the field with a Lifetime Achievement Award, presented to him by Dr. Jocelyn Elders.

Dr. Allen is a member of the Gay and Lesbian Medical Association, the International AIDS Society,  and the American Society for AIDS Research. He is board certified in Internal Medicine and is a certified "HIV Specialist" by the American Academy of HIV Medicine.
  • Internal Medicine
  • HIV Specialist™

David M. Lee, M.D.

Dr. David M. Lee grew up in Princeton, TX. He attended the University of North Texas where he graduated summa cum laude. He graduated from the University of Texas Medical Branch in Galveston with honors. His residency in Internal Medicine was at Baylor University Medical Center in Dallas, where he remains an active member of the medical staff. He specializes in general Internal Medicine and HIV Medicine, and he is credentialed by the American Academy of HIV Medicine as an HIV Specialist™.

  • Internal Medicine
  • HIV Specialist™

Marc A. Tribble, M.D.

Dr. Tribble is originally from Arlington, TX. His educational background includes graduations from Baylor University, the University of Texas Medical Branch at Galveston, and Baylor University Medical Center at Dallas. He also completed an Infectious Disease fellowship at UT Southwestern Medical Center. He has experience in clinical research with trials of new HIV medications. Dr. Tribble was named to D Magazine's Top Doctors 2007 list for the first time, and was recently named....

...read more
Dr. Tribble is originally from Arlington, TX. His educational background includes graduations from Baylor University, the University of Texas Medical Branch at Galveston, and Baylor University Medical Center at Dallas. He also completed an Infectious Disease fellowship at UT Southwestern Medical Center. He has experience in clinical research with trials of new HIV medications.

Dr. Tribble has been named to D Magazine's annual "Top Doctors in Dallas" list in the category of Infectious Diseases every year since 2007. He remains on staff at Baylor University Medical Center at Dallas, and he fosters the education of medical students, residents, and fellows.

His clinical areas of focus include HIV, Hepatitis C, and general Infectious Diseases, including Travel Medicine.
  • Internal Medicine
  • Infectious Diseases
  • HIV Specialist™

D Magazine Top Doctors

2007-2015

Donald A. Graneto, M.D.

Dr. Graneto works to keep Dallas healthy - one patient at a time - by creating individual health plans customized to each patient's unique needs. He grew up in Cleveland, Ohio, and graduated from The Ohio State University College of Medicine before moving to Dallas. He completed his residency in Family Medicine at the University of Texas Southwestern, and is certified by the American Board of Family Medicine. His areas of interest include preventive medicine, general primary care, HIV treatment, health information technology and optimizing management of chronic medical conditions.

  • Family Practice
  • HIV Specialist™

D Magazine Top Doctors

2015

Eric Klappholz, ANP-C

Eric Klappholz, ANP-C was born and raised in North Richland Hills, Texas. He attended Texas Woman's University where he graduated with honors (Sigma Theta Tau) and earned a Master's in Science as an Adult Nurse Practitioner. In addition, he holds a Bachelor's of Science in nursing and a Bachelor's of Business Administration from the University of Texas at Arlington. Eric is certified through the American Academy of Nurse Practitioners, and is licensed by the Texas Board of Nursing as an Adult Nurse Practitioner.

...read more
Eric Klappholz, ANP-C was born and raised in North Richland Hills, Texas. He attended Texas Woman's University where he graduated with honors (Sigma Theta Tau) and earned a Master's in Science as an Adult Nurse Practitioner. In addition, he holds a Bachelor's of Science in nursing and a Bachelor's of Business Administration from the University of Texas at Arlington. Eric is certified through the American Academy of Nurse Practitioners, and is licensed by the Texas Board of Nursing as an Adult Nurse Practitioner.

Eric strives to be a partner in his patients health by providing high-quality primary care to all of his patients, including those with HIV. Eric focuses on health promotion, disease prevention, and health education and counseling, guiding patients to make positive health and lifestyle choices.

In his free time Eric enjoys training for marathons and triathlons.
  • HIV Specialist™

Peter Triporo, RN, ACNP-BC

Peter Triporo RN, ACNP-BC, attended the University of Texas at Arlington, where he received his Masters of Nursing with Honors (Sigma Theta Tau and Phi Kappa Phi). He is board certified through the American Nurses Credentialing Center (ANCC) and licensed by the Texas Board of Nursing as an Adult Acute Care Nurse Practitioner. As a Nurse Practitioner, Peter excels in health promotion, counseling, prevention and disease management. He believes in building a strong, collaborative partnership with patient’s to improve their access and quality of care they receive.

Robert W. Henderson, M.D.

Dr. Robert W. Henderson retired from UPG in 2011. He began private practice in Dallas in 1973. In 1994, he joined Dr. Brady Allen to focus primarily on HIV Care although he had treated HIV since the very beginning of the epidemic. He practiced 38 years and regards his last years with Uptown Physicians Group as the happiest of his career.