Gary G. Graf APRN My Medical Specialty: Endocrinology male | Speaks: English Primary Phone: (785) 368-0440 Board Certification American Nurses Credentialing Center (Family NP) Education Nursing School Nursing Washburn University Topeka, KS 1992 This Provider Practices at: Cotton O’Neil Diabetes & Endocrinology Center 3520 S.W. 6th Ave. Topeka, KS 66606-2806 (785) 368-0445 Get Directions Suggest An Update Credential change? New location?Enter provider updates below.Close Your Email* Update DetailsCAPTCHAEmailThis field is for validation purposes and should be left unchanged. This iframe contains the logic required to handle Ajax powered Gravity Forms. Need an appointment? Log into MyChart Don't have MyChart? Sign up today.