Crofton Bike Doctor 2616- A Chapel Lake Drive, Gambrills, MD21054 Crofton Bike Doctor is locally owned and owner operated offering sales and service of bicycles. They carry favorite…More brands such as Trek, Felt, Cyfac, Co-Motion, Catrike, Look, Bell, Giro, Thule, Haro, MirraCo and more. There's a specific boutique within the store for women cyclist. On staff are professional fitters certified by F.I.S.T. for triathlon fittings, as well as Fit Kit and Trek Bicycle fitting certifications.