Our Providers

Robert Sikora, MD, FACAAI, FAAAAI

*Northern Virginia Magazine's Top Doctor since 2015!

Dr.  Robert Sikora founded The Virginia Center for Allergy and Asthma with the goal to provide  exceptional diagnostic and treatment options for a wide spectrum of allergic disorders.  He has been practicing in Virginia for over 15 years and is a diplomate

of the American Board of Allergy and Immunology. He obtained his medical degree at the Rosalind Franklin University of Medicine and Science/Chicago Medical School in 1994; he then completed his residency in Internal Medicine in 1997 at Northwestern University.  Dr. Sikora remained at Northwestern University to complete his fellowship in Allergy/Immunology which he completed in 1999.   He was elected Chief Fellow of the Allergy/Immunology Division at Northwestern University and also won the Illinois State Allergy Society Award for excellence in research for his paper on occupational asthma.

Since moving to Virginia, Dr. Sikora has been invited to speak at many physician meetings and has been on the Speakers’ Board of several pharmaceutical companies.  He is a Fellow of both the American Academy of Allergy and Immunology as well as the American College of Allergy and Immunology. He holds the honor of being named a “Top Doctor” in Northern Virginia in 2015.  Dr. Sikora resides in Fredericksburg with his wife, Dr. Barbara Newberg and their several dogs.   His interests outside of the office include cooking, travel and photography – in fact, many of his photos can be found on the walls of his office.  He also runs a dog rescue with his wife in the Washington DC area and has rescued over 10,000 dogs thus far.  For those interested, please visit their website: www.k-9lifesavers.org.

Darshana Alle, MD

Dr. Darshana Alle joined The Virginia Center for Allergy & Asthma in 2015 after four years in private practice in Northern Virginia.  She is a diplomate of the American Board of Allergy & Immunology and the American Board of Internal Medicine.  Dr. Alle

is a native of Louisiana, but completed the majority of her medical training in  Ohio. She graduated from the University of Akron in 2001 with a bachelor’s degree in Natural Sciences and obtained her medical degree at the Northeast Ohio Medical University in 2005. She then pursued her internship and residency in Internal Medicine at Case Western Reserve University/University Hospitals of Cleveland. After completing residency, she returned to Louisiana to complete her fellowship in Allergy/Immunology at the Tulane University Medical Center in 2011.

Dr. Alle is a member of the American Academy of Allergy, Asthma and Immunology as well as the regional Greater Washington Allergy, Asthma and Immunology Society.  She has volunteered for Allergy and Asthma Network and is certified with The National Allergy Bureau.    She resides in Fredericksburg with her husband, Dr. Deepak Raghavan.  In her spare time, she enjoys working out, watching Netflix, and spending time with her family.