Dr. Derrick is excited to join MMC as he returns to his home state of Tennessee. He attended the University of Tennessee in Knoxville, TN, for his undergraduate education with a focus on Biology and Biochemistry, Cellular and Molecular Biology. After completing medical school at East Tennessee State University’s James H. Quillen College of Medicine in Johnson City, TN, he relocated to Charleston, SC, to continue training at the Medical University of South Carolina Pediatric Residency Program. He further specialized in Allergy and Immunology for adult and pediatric patients at the Vanderbilt University Allergy and Immunology Fellowship Program in Nashville, TN. He is double board-certified in Pediatrics as well as Allergy and Immunology and currently accepts new adult and pediatric patients in the Allergy and Immunology clinic.Education for patients is critical to Dr. Derrick, and he draws from his background of having both parents as educators. His previous employment experience includes working with fellows training in Allergy and Immunology as well as directing an elective rotation for medical students and resident trainees interested in the specialty. He enjoys photography in addition to learning about history and travelling to broaden his own global education. Dr. Derrick is rated as an Experienced provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Vibratory Urticaria, Chronic Spontaneous Urticaria (CSU), Hives, and Allergic Conjunctivitis.

Dr. Dunn grew up just outside Memphis in Germantown, Tennessee. She graduated from the University of Memphis and attended University of Tennessee College of Medicine in Memphis. She stayed in Memphis to complete her internal medicine residency at the University of Tennessee. After completing her residency, she moved to the Nashville area to practice internal medicine. She married and now has 2 daughters. The family became interested in horseback riding several years ago and moved to a small farm in Murfreesboro. Together, they run a not-for-profit horse rescue and sanctuary. Dr. Dunn enjoys riding horses and working at the horse rescue. When not filthy from farm work, she loves to shop for bargains with her mother who lives nearby. Dr. Dunn enjoys caring for patients and developing long term relationships with them as a primary care provider. Dr. Dunn is rated as an Experienced provider by MediFind in the treatment of Allergic Rhinitis. Her top areas of expertise are High Cholesterol, Sitosterolemia, Obesity in Children, and Hypertension.

Jonathan Hafner, M.D., started his own practice, Rocky Top ENT & Allergy, as well as Rocky Top Hearing. Dr. Hafner completed his undergraduate degree at Vanderbilt and his medical degree at UT Memphis. He was trained at the University Texas-Houston/MD Anderson Cancer Center and Mayo Clinic, Rochester, Minnesota. Dr. Hafner is board certified and is a Fellow of the American Academy of Otolaryngology-Head and Neck Surgery and a Fellow of the American Academy of Otolaryngic Allergy. He has been practicing general ENT, pediatric ENT, and Allergy since 2011. Dr. Hafner is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Grass Allergy, Sinusitis, Allergic Rhinitis, and Nasal Polyps.

William Harvey is a primary care provider, practicing in Family Medicine in Knoxville, Tennessee. Dr. Harvey is rated as an Experienced provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Tracheitis, Acute Cystitis, Sinusitis, and Empyema. Dr. Harvey is currently accepting new patients.

Erika Mulligan is a primary care provider, practicing in Internal Medicine in Nashville, Tennessee. Dr. Mulligan is rated as an Experienced provider by MediFind in the treatment of Allergic Rhinitis. Her top areas of expertise are High Cholesterol, Sitosterolemia, Hypothyroidism, and Hypertension. Dr. Mulligan is currently accepting new patients.

Tidence Prince is an Allergy and Immunologist in Maryville, Tennessee. Dr. Prince is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP). Dr. Prince is currently accepting new patients.

William Cain is an Allergy and Immunologist in Maryville, Tennessee. Dr. Cain is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Cain is currently accepting new patients.

Erin Rohman is an Allergy and Immunologist in Cookeville, Tennessee. Dr. Rohman is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. Her top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Alpha-gal Syndrome (AGS). Dr. Rohman is currently accepting new patients.

Karthik Krishnan is an Allergy and Immunologist and a Pediatrics provider in Knoxville, Tennessee. Dr. Krishnan is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives. Dr. Krishnan is currently accepting new patients.

Marek Pienkowski is an Allergy and Immunologist in Kingsport, Tennessee. Dr. Pienkowski is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Food Allergy. Dr. Pienkowski is currently accepting new patients.

Jeffrey Schlactus is an Allergy and Immunologist in Athens, Tennessee. Dr. Schlactus is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Angioedema. Dr. Schlactus is currently accepting new patients.

Michael Springer is an Allergy and Immunologist in Morristown, Tennessee. Dr. Springer is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Conjunctivitis (Pink Eye). Dr. Springer is currently accepting new patients.

Joseph Wisniewski is an Allergy and Immunologist in Knoxville, Tennessee. Dr. Wisniewski is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Wisniewski is currently accepting new patients.

Megan Stauffer is an Allergy and Immunologist in Maryville, Tennessee. Dr. Stauffer is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. Her top areas of expertise are Alpha-gal Syndrome (AGS), Allergic Rhinitis, Grass Allergy, and Sinusitis. Dr. Stauffer is currently accepting new patients.

Jane Conley is an Allergy and Immunologist and a Pediatrics provider in Athens, Tennessee. Dr. Conley is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. Her top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Chinese Restaurant Syndrome. Dr. Conley is currently accepting new patients.

John Overholt is an Allergy and Immunologist in Spring Hill, Tennessee. Dr. Overholt is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Hives. Dr. Overholt is currently accepting new patients.

David Fortune is an Otolaryngologist in Goodlettsville, Tennessee. Dr. Fortune is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Empyema, Sinusitis, Allergic Rhinitis, and Grass Allergy. Dr. Fortune is currently accepting new patients.

Laura Green is an Allergy and Immunologist in Knoxville, Tennessee. Dr. Green is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. Her top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives. Dr. Green is currently accepting new patients.

Justin Morgan is an Otolaryngologist in Goodlettsville, Tennessee. Dr. Morgan is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Sinusitis, Empyema, Allergic Rhinitis, and Grass Allergy. Dr. Morgan is currently accepting new patients.

Marc Cromie is an Allergy and Immunologist and a Pediatrics provider in Chattanooga, Tennessee. Dr. Cromie is rated as a Distinguished provider by MediFind in the treatment of Allergic Rhinitis. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives. Dr. Cromie is currently accepting new patients.