Tolland 231 Merrow Rd Suite 3915 Tolland, CT 06084 Phone: (860) 875-9856 Send Us A Message LocationSouth Windsor OfficeTolland OfficeDoctorJohn Walker, MDOlga Bulygina, MDSreenivas Gunturu, MDLori Bryon, PABrittany MolkenthinScott O'Brien, PA-CTristin Geist, APRNNikisha Hamal, MSN, FNP-CFrederic Bernstein, DO, FACC, FSCAIName* Email* Phone*Message*Please use this form for general information purposes only. DO NOT send personal health information through this form. Specific patient care must be addressed during your appointment.CommentsThis field is for validation purposes and should be left unchanged. Our Location