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David Tepelhas

David Tepelhas been practicing dentistry since June of 2006 upon graduation from TuftsUniversity School of Dental Medicine. In 2014, he began volunteering for the Oral HealthProgram in the New York City Department of Health and Mental Hygiene (NYC DOHMH) tobeginto work in public health. After several months, he became a consultant to theprogram. By 2017, he was hired as a part-time NYC employee to help reinvigorate a school-based dental program in NYC public schools, while continuing to maintain his own privatedental practice. The Oral Health Program used innovative methods which included dataanalysis and policy changes to strategically utilize portable dentistry as a way to improveaccess to dental care for NYC’s schoolchildren.During this time, 105 schools served withdental care in 2014 increased to over 700 schools by 2020, including the prioritized use ofevidence-based dental disease preventing treatments. David also advises on policy,surveillance, and oral health educational materials for the public.


Hannah Byrnes-Enoch

Hannah Byrnes-Enoch is currently Senior Advisor, Special Operations in the Office of the Commissioner at the NYC Department of Health and Mental Hygiene, where she works on the COVID-19 vaccine rollout. She previously spent five years at NYC Health + Hospitals implementing the largest eConsult program in the country as a pathway to improve access to ambulatory specialty care, enhance communication between primary care and specialty clinicians, and ensure that the right patients get the right care in the right timeframe, for which she received the 2020 Frederick O’Reilly Hayes Prize. Ms. Byrnes-Enoch received a Master of Public Health in Health Policy from Yale School of Public Health in 2010.


Ruby B. Choi

Ruby B. Choi began her public service career in 2006 working for various city government offices in Chicago and New York, as well as the MTA. In 2010, she joined the NYC Mayor’s Office of Operations working under the Bloomberg and De Blasio administrations on a range projects to make City operations more efficient and effective. In 2016, Ms. Choi was appointed Assistant Commissioner at the NYPD.  She designed and established the Department’s Project Management Office.  The Project Management Office (PMO) functions as a central coordinating entity for implementing major initiatives in the NYPD that impact public safety, community engagement, and innovative delivery of services to the people of New York City.  Currently, in partnership with other units at the NYPD, the PMO provides support on a range of police reform and customer service initiatives.

Ms. Choi was born and raised in New York City.  She holds a Bachelor of Arts degree in Political Science and International Studies from the University of Chicago, and a Master degree in International Affairs and Urban Policy from Columbia University, School of International and Public Affairs.  Additionally, she attended the Senior Executives in State and Local Government program at the Harvard Kennedy School in 2017.