New Search Teri M. O'Neil F.N.P., M.S.N., M.S.N. (301) 698-9444 Department Medicine Specialty Internal Medicine Primary Office Address: Gaffar Syed Md. PA 801 Toll House Ave, Bldg H-4 H4 Frederick, MD 21701 Phone: (301) 698-9444 Recommend this Physician Get Directions Education Undergraduate - SUNY Plattsburg Postgraduate Education - Pace University Board Certifications American Nurses Credentialing Center