Our Providers
Meet the experienced providers at LeBauer Allergy & Asthma, dedicated to helping patients in Greensboro and Burlington, NC, find relief from allergies and asthma. With comprehensive care, personalized treatment plans, and nearly three decades of experience, our team is here to support your health every step of the way. Meet our providers today and take the first step toward feeling your best.
Dr. Ranjan Sharma
Dr. Sharma grew up in Greensboro and graduated from Page High School. He earned his Undergraduate degree from the University of North Carolina at Chapel Hill. His Medical Degree is from East Carolina University, and his residency in Internal Medicine was completed at the University of Maryland Hospital in Baltimore. His Allergy, Asthma & Immunology fellowship was completed at Duke University Medical Center. Dr. Sharma is a Diplomate of both the American Board of Internal Medicine and the American Board of Allergy & Immunology. He specializes in treating pediatric and adult patients who suffer from allergy-related illnesses.
Dr. Chris Van Winkle
Originally from Michigan, Dr. Van Winkle earned his Undergraduate Degree in Biology from Pepperdine University in California. He completed his Medical Degree at Vanderbilt University in Nashville, Tennessee, and served his Residency in Pediatrics at the University of North Carolina at Chapel Hill. Dr. Van Winkle entered private practice here in Greensboro in 2003 and enjoyed seven years as a General Practice Pediatrician with a keen interest in caring for Allergy and Asthma related conditions.
Dr. Katherine Oberhelman
Katherine Oberhelman, MD, will be joining LeBauer Allergy & Asthma in November 2025. Dr. Oberhelman specializes in Allergy, Asthma, and Immunology, caring for both adults and children. She offers allergy testing and treatment for a wide range of allergic conditions, including asthma, sinusitis, allergic skin conditions, environmental allergies, and food allergies. Originally from New Orleans, Dr. Oberhelman earned her undergraduate degree from Fordham University in New York and her medical degree from Tulane University in Louisiana. She is Board Certified in Internal Medicine, having completed her residency training at St. Louis University in Missouri. She completed her Allergy & Immunology Fellowship at Tulane University and will relocate to the Greensboro area to join LeBauer Allergy & Asthma. Please note that once finalized, she will begin practicing under her new name, Dr. Katherine Holt.
Brislyn Saylor, PA-C
We welcome Brislyn Saylor, PA-C, to our practice and our community as of September of 2024. Originally from Kentucky, Ms. Saylor earned her undergraduate degree in Biology from Eastern Kentucky University and her Master of Science in Physician Assistant Studies from the University of the Cumberlands. She is board-certified through the National Commission on Certification of Physician Assistants and has over six years of experience caring for pediatric and adult patients with allergy and asthma conditions. She is excited to be joining LeBauer Allergy and Asthma to manage treatable health conditions with quality specialty care to help prevent patients from getting sick and needing to seek care at urgent cares and emergency rooms. Ms. Saylor will collaborate closely with our specialist physicians and be an integral part of our patients’ care team for follow-ups and sick care. She will see patients in our Greensboro and Burlington offices.
Dr. Meg Whelan
Dr. Whelan practiced with LeBauer Allergy and Asthma from 2005 until she passed away in March 2025. She was a native of Long Island, N.Y., and completed her Fellowship in Allergy and Immunology in Philadelphia. She earned her BS in Biology from Duke University and completed her Medical Degree and Residency training at SUNY Stony Brook. Dr. Whelan was a trusted physician dedicated to helping patients in our community and is deeply missed.
Dr. Eugene LeBauer – Retired
Dr. LeBauer is a native of Greensboro and a graduate of Greensboro High School. He earned his Undergraduate and Medical degrees from Duke University. He served his Residency in Internal Medicine at Ohio State University Hospital and completed a Fellowship in Allergy/Immunology and Pulmonary Medicine at the University of Colorado. After spending two years in the US Air Force in the Division of Allergy, Dr. LeBauer returned to Greensboro to begin private practice in the Internal Medicine subspecialties of Allergy and Pulmonology. Dr. LeBauer retired on December 31, 2012.
