NTIDC Staff & Physicians - Expertise in Exceptional Medical Care

The staff and physicians at North Texas Infectious Diseases Consultants provide expert medical care that exceeds all expectations. All physicians are board certified in Infectious Diseases. In addition, each NTIDC physician has completed a specialized fellowship training program in Infectious Diseases Medicine.

Our Physicians


Louis Sloan, MD

Dr. Sloan joined North Texas Infectious Diseases Consultants and has worked at Baylor University Medical Center since 1994. Dr. Sloan is board certified in both Infectious Diseases and Internal Medicine and completed his fellowship and residency training at Baylor. Dr. Sloan has a special interest in transplant medicine, post-operative infections and HIV/AIDS research; he implemented NTIDC's clinical research program for HIV/AIDS and clinical trials for other infectious diseases. Additionally, Dr. Sloan serves on the teaching faculty for Baylor University Medical Center and sits on multiple medication advisory boards. Dr. Sloan has consistently been named Best Doctor by D Magazine for infectious diseases. Dr. Sloan is married with 2 children.


Mezgebe Berhe, MD, MPH

Dr. Berhe joined North Texas Infectious Diseases Consultants in August 2005 after completing his Infectious Disease fellowship training at Virginia Commonwealth University in Richmond, Virginia and his Internal Medicine residency at St Barnabas Hospital affiliated with Cornell Medical Center in New York City. Dr. Berhe also holds a Masters of Public Health Degree from VCU in Epidemiology. Dr. Berhe has extensive training in both tropical medicine and transplant infections. Since joining NTIDC in 2005, Dr. Berhe has been active in research as a primary investigator and sub-investigator for clinical trials.


Clinton C. Haley, MD, MPH

Dr. Haley joined North Texas Infectious Diseases Consultants in 2009 after completing his Infectious Diseases fellowship at the University of Texas Health Science Center at Houston. Dr. Haley also holds a Masters Degree in Public Health from Harvard University. Prior to his fellowship, Dr. Haley served as an Epidemic Intelligence Service Officer for the Centers for Disease Control and Prevention (CDC) in Portland, Oregon. Dr. Haley completed his medical school training at Texas A&M University College of Medicine and his Internal Medicine Residency at Parkland Hospital in Dallas. Additionally, Dr. Haley participates as a sub-investigator for clinical trials.


Christopher J. Bettacchi, MD

Dr. Bettacchi joined North Texas Infectious Diseases Consultants in 2010 after completing his Infectious Diseases fellowship at the UAB Medical Center in Birmingham, Alabama. Prior to his fellowship, Dr. Bettacchi served as an Assistant Professor at the UAB Hospitalist Program. After graduating from the University of Notre Dame, Dr. Bettacchi completed his medical school training at St. George's University in New York and his Internal Medicine Residency at Loyola University Medical Center in Chicago. Dr. Bettacchi continues to impact the research community by offering projects on Hospital Epidemiology and Infection Control and also serves as an investigator for clinical trials at NTDIC. Clinically, Dr. Bettacchi is dedicated to the care of transplant recipients, post-operative and orthopedic patients, and those with HIV and Hepatitis C. Dr. Bettacchi is married with 2 children, and enjoys running and biking at White Rock Lake!


Rahaf Al Masri, MD

Dr. Al Masri joined North Texas Infectious Diseases Consultants in August 2016 after completing her Infectious Diseases fellowship with Baylor University Medical Center and her Internal Medicine Residency at Raritan Bay Medical Center in New Jersey. Dr. Al Masri has a special interest in HIV and transplant medicine and also participates as a sub investigator for clinical trials at NTIDC. Dr. Al Masri is married with 2 children.


Suzanne Wada, MD

Dr. Wada joined North Texas Infectious Diseases Consultants in July 2016. Previously Dr. Wada was the Clinical Director of Transplant Infectious Diseases and an Associate Professor of Internal Medicine, Division of Infectious Diseases at the University of Texas Southwestern Medical Center in Dallas. Dr. Wada received her medical degree from Temple University and completed her residency from the Medical College of Pennsylvania. She completed her fellowship in General Infectious Diseases from University Medical Center at Stonybrook (NY) and her fellowship in Transplant Infectious Diseases from the University of Pittsburg Medical Center (PA). Dr. Wada is married with 2 children.


Our Physician Assistants

Physician Assistants are valuable clinicians within the NTIDC practice. Each Physician Assistant has been highly educated and works under the direct supervision of their oversight physician. These clinicians provide a full array of medical services to our patients and maintain their own patient base.


Erin Duhaime, PA-C

Erin Duhaime joined North Texas Infectious Diseases Consultants in January 2009. Erin completed her Masters in Physician Assistant Studies at Stony Brook University, Stony Brook, New York. Erin previously served as NTIDC's HIV/AIDS Clinical Trials Coordinator and HIV/AIDS Research Assistant. Erin is an active member in the American Academy of Physician Assistants (AAPA). Erin is active in research as a sub-investigator for clinical trials.


Our Research Department

The physicians and staff of NTIDC conduct multiple clinical trials for the treatment and study of HIV/AIDS-infected individuals. Currently, the Research Department is participating in Phases I, II, III & IV trials and is one of the most respected and sought-after clinical trial sites.


Bryan King, LVN, CCRC

Bryan King joined North Texas Infectious Diseases Consultants in 2001 as the Director of the Research Department which he helped develop with Dr. Louis Sloan. Bryan has helped to expand the Research Department to a multi-phase respected site conducting multiple studies that continue the fight against HIV and other infectious diseases. He has established excellent ongoing relationships with sponsoring Pharmaceutical companies, giving patients access to new and improved treatments. Bryan graduated from nursing school in North Little Rock, Arkansas in 1989 and then moved to Dallas to help fight AIDS as a HIV Nurse. He is a member of the Association of Clinical Research Professionals and certified as a Clinical Research Coordinator.


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