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 Grass Allergy. His top areas of expertise are Vibratory Urticaria, Chronic Spontaneous Urticaria (CSU), Hives, and Allergic Conjunctivitis.

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 Grass Allergy. His top areas of expertise are Grass Allergy, Sinusitis, Allergic Rhinitis, and Nasal Polyps.

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 Grass Allergy. Her top areas of expertise are High Cholesterol, Sitosterolemia, Hypothyroidism, and Hypertension. Dr. Mulligan 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 Grass Allergy. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Cain 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 Grass Allergy. 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.

Erin Rohman is an Allergy and Immunologist in Cookeville, Tennessee. Dr. Rohman is rated as a Distinguished provider by MediFind in the treatment of Grass Allergy. 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 Grass Allergy. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives. Dr. Krishnan 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 Grass Allergy. 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 Grass Allergy. 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 Grass Allergy. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Wisniewski 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 Grass Allergy. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Food Allergy. Dr. Pienkowski 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 Grass Allergy. Her top areas of expertise are Alpha-gal Syndrome (AGS), Allergic Rhinitis, Grass Allergy, and Sinusitis. Dr. Stauffer 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 Grass Allergy. Her top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives. Dr. Green 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 Grass Allergy. Her top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Chinese Restaurant Syndrome. Dr. Conley 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 Grass Allergy. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives. Dr. Cromie is currently accepting new patients.

Nicholas Kolinsky is an Allergy and Immunologist in Johnson City, Tennessee. Dr. Kolinsky has been practicing medicine for over 9 years and is rated as a Distinguished provider by MediFind in the treatment of Grass Allergy. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Kolinsky 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 Grass Allergy. His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Hives. Dr. Overholt is currently accepting new patients.

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

Laura Hunt is a Pulmonary Medicine provider in Franklin, Tennessee. Dr. Hunt is rated as a Distinguished provider by MediFind in the treatment of Grass Allergy. Her top areas of expertise are Asthma in Children, Asthma, Lung Metastases, and Grass Allergy. Dr. Hunt is currently accepting new patients.

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