O&O Alpan, LLC is a multi-specialty medical center that specializes in rare disorders. We provide both clinical and laboratory services, and conduct research in different therapeutic areas.

We are a unique, one-of-a-kind business that started from the mere necessity of providing diagnostics, treatment and a medical house for patients with chronic, rare and yet to be diagnosed complex conditions.

Allergy/Immunology Clinic and  Infusion Clinic are our main clinical divisions.  While our outreach clinics spread to the surrounding states, our spacious, state-of-the-art main facility at Fairfax, VA house in addition a  pharmacy,  and  a clinical diagnostic laboratory.

We work tirelessly to put the individual with life-long conditions first.  We respect their privacy, think about their comfort, and listen to them.  Through their medical journey, most thought that they were voiceless, but at O&O, their conversations lead to diagnoses, and treatment options. Our goal is to help our patients find answers to their medical questions.
— Dr. Oral Alpan