Current and Former Fellows

Christopher M. O’Connor, FACHE
Chief Executive Officer
Yale New Haven Health

Christopher M. O’Connor is Chief Executive Officer of Yale New Haven Health System (YNHHS), the largest and most comprehensive healthcare system in Connecticut and recognized nationally for advanced clinical care. Prior to his role as CEO, Mr. O’Connor first served as Executive Vice President and Chief Operating Officer when he joined the Yale New Haven Health System in 2012. He was appointed President of YNHHS in 2020, where he was responsible for the operations of the System.

Mr. O’Connor previously served as President and CEO of the Saint Raphael Healthcare System and the Hospital of Saint Raphael, serving in that position until the successful affiliation with Yale New Haven Hospital, September, 2012. Previous roles included serving as President of Caritas St. Elizabeth Medical Center, the 340-bed flagship of the six-hospital system affiliated with the Archdiocese of Boston and Tufts School of Medicine, and as Vice President of Clinical Operations for the Ochsner Health System in New Orleans.

Mr. O’Connor is a member of a number of boards, including serving as chair of the Connecticut Hospital Association (CHA). He is a Fellow of the American College of Healthcare Executives (ACHE). Mr. O’Connor received his Masters in Health Services Administration from George Washington University in 1996 and his Bachelor of Arts, Economics from George Washington University in 1993.

Emily Muha
Administrative Fellow
2024 – 2026
Yale New Haven Health
[email protected]
 
Emily Muha was born and raised in Long Valley, New Jersey. She earned a Bachelor of Science in Nutritional Sciences from the University of New Hampshire and a master’s degree in Health Administration from the Edward J. Bloustein School of Planning and Public Policy at Rutgers University. 

 

Muha worked full-time as a research coordinator at Rutgers’ Institute for Health, Health Care Policy, and Aging Research during graduate school. In this position, she worked on studies examining the psychological propensities of providers and patients that lead to poor end-of-life care outcomes. Additionally, Muha executed process improvement projects which resulted in increased study recruitment and enrollment rates. She also volunteered as vice-president of the Rutgers Graduate Society of Healthcare Leaders. Muha is a member of the Upsilon Phi Delta Honor Society. 

 

Outside of her professional role, she enjoys going to the beach and spending time with her friends and family.

Emma Stanley
Administrative Fellow
2024 – 2026
Yale New Haven Health
[email protected]
 
Emma Stanley was born and raised in Fairhope, Alabama. She earned a Bachelor of Science in Public Health from Tulane University and a Master of Health Administration from Tulane University.

 

Stanley completed her administrative residency as a care delivery resident at The Kinetix Group - Powered by Petauri, a care delivery consultancy, where she supported client teams in their effort to improve patient outcomes for underrepresented disease states. During her time in graduate school, Stanley served as president of the Health Management Student Leadership Association. Collaborating with her peers, she led the organization and execution of an annual event aimed at fundraising to support sending students to educational conferences. Stanley is a member of the Delta Omega Honor Society and the Upsilon Phi Delta Honor Society.

 

Outside her professional role, she enjoys spending time with her family and friends, reading a good book, traveling to warm places and baking lots of bread.

Sue Tenorio Céspedes, MBBS, BSMLS, MHA
Administrative Fellow
2023-2025
Yale New Haven Health
[email protected]
 
Sue Tenorio Céspedes was born in Tehuacan, Mexico. At age 15, she moved to Ireland to attend St. Louis High School in Dublin. She returned to Mexico and earned a Bachelor of Medicine, Bachelor of Surgery from the University of Puebla. After moving to the United States, she earned a Bachelor of Science in Medical Laboratory Science from the University of Bridgeport and a Master of Healthcare Administration from New York University. She also earned a Lean Six Sigma Green Belt for Healthcare Certificate from Emory University and an Executive Leadership Development Certificates from Wharton and MIT.  

 

Tenorio Céspedes has held various clinical and academic roles as a physician, teacher and medical laboratory scientist. While completing her MHA, she worked full-time as the lead medical microbiology laboratory scientist and advanced medical laboratory scientist in hematology and clinical chemistry at Norwalk Hospital. During that time, Tenorio Céspedes served as a Quality and Safety Committee member and a peer inspector for the College of American Pathologists in New York City. She also worked closely with the Connecticut Department of Public Health, implementing new molecular testing and responding to the COVID-19 pandemic and the 2022 mpox outbreak. 

 

Outside of her professional role, she enjoys spending time with her husband and three children, cooking, reading and going to the beach.

Chandler Wilson, MHA 
Administrative Fellow
2023-2025
Yale New Haven Health
[email protected]
 
Chandler Wilson is a native of Pine Bluff, Arkansas. She earned a Bachelor of Science in Biology from the University of Arkansas at Pine Bluff and a Master of Health Administration from the University of Arkansas for Medical Sciences. She recently completed Emory Continuing Education’s Lean Six Sigma Greenbelt for Healthcare Certificate program.

 

Chandler worked full-time as an Anesthesia Tech Manager in Perioperative Services during graduate school at the University of Arkansas for Medical Sciences (UAMS). As a manager, she doubled the staffing matrix while maintaining employee engagement and implemented a career ladder for her team to help with retention. Additionally, Chandler worked on interdepartmental projects to better support patient outcomes. She also volunteered as a recruiter for the UAMS Master of Health Administration Program. Chandler is a member of the Delta Omega Honor Society and the Upsilon Phi Delta Honor Society.

In year one of her fellowship, Chandler committed to projects that supported health system initiatives by improving operational efficiency. She is most passionate about increasing access to healthcare for all populations. Her most recent project focused on successfully launching a moderate sedation care model for dialysis patients who need semi-urgent access to dialysis procedures. The program allows for operational efficiency and optimized resource allocation by utilizing a trained moderate sedation nursing team. It also creates OR capacity for higher-acuity cases that require anesthesia resources.

Outside her professional role, she enjoys traveling and learning about different cultures, spending time with her family and dog, Mason, traveling and singing. Chandler also enjoys giving back through volunteerism and mentorship. She is an active member in her church, sorority, Alpha Kappa Alpha Sorority Inc., and serves on the Advisory Board for the MHA programs at UAMS.

Lianne Brown, MHA
Senior Consultant, Business Development and Strategic Partnerships
Yale New Haven Health
[email protected]
 
Lianne Brown was born and raised in Richmond, Virginia. She earned a Bachelor of Science degree in Public Health from Tulane University and a Master of Health Administration from Tulane University. She also completed the post-baccalaureate, pre-medical program at the University of Virginia. 

Brown completed her administrative fellowship training with Yale New Haven Health in 2021, where she supported and implemented a number of strategic initiatives and operational projects throughout the health system. Immediately following her fellowship, she joined the YNHHS Neurosciences, Orthopedics and Spine (NOS) service line as a senior manager. She is now a senior consultant on the Business Development and Strategic Partnerships team. In this role she is focused on transactional work through mergers and acquisitions, strategic growth and developing partnerships with external stakeholders.

Outside of her professional role, Lianne enjoys spending time with friends and family, traveling and is a certified Pilates instructor.

Madelyn Kaehler, MHA
Manager, Supportive Care
Smilow Cancer Hospital
[email protected]

Madelyn Kaehler was born in Minneapolis, Minnesota. She earned her Bachelor of Science degree in Kinesiology from the University of Minnesota and her Master of Healthcare Administration from the University of Kentucky, College of Public Health.

Kaehler completed her Administrative Fellowship training at Yale New Haven Health in 2021 where she supported initiatives in strategic planning, finance and oncology program development. She is now the manager of the Supportive Care Navigation, Integrative Medicine and the Cingari Family Boutique teams at Smilow Cancer Hospital. She broadly supports the Supportive Care departments at Smilow Cancer Hospital and is heavily involved in strategic operations for the teams she manages. 

Outside of her professional role, she enjoys spending time with friends and family, exercising, attending sporting events and traveling.  

Lewis Goodrum, MHA
Associate Director, Regional Practice Operations
Northeast Medical Group
[email protected]

Lewis Goodrum was born and raised in Dallas, Texas. He earned his Bachelor of Science in Public Health from Brigham Young University and his master’s degree in Health Administration from The Ohio State University’s College of Public Health. 

Goodrum completed his administrative fellowship training at Yale New Haven Health and supported initiatives in hospital acquisitions, ambulatory care facility planning, patient experience and business development. He is now an associate director of Regional Practice Operations for Northeast Medical Group. He is responsible for all day-to-day operations of 15 medical practice locations, including services of Internal Medicine, Gastroenterology, Pediatrics, Walk-in, Allergy and Telehealth.

Outside of his professional role, he enjoys spending time with his wife and children, reading, exercising, hiking and participating in local triathlons.

Marie-Helene Gratton, MBA, MPH
Vice President, Digestive Health and Urology
Yale New Haven Hospital
 [email protected]

Marie-Helene Gratton was born and raised in Montreal, Canada. She received her undergraduate degree in Finance from McGill University and graduate degrees in Business Administration and Public Health from Yale University.

She began her career at Yale New Haven Hospital in 2007 as an Administrative Fellow and has collaborated on a number of strategic projects during her tenure, including establishment of a transfer center (Y-Access), creation of initial system-wide service line plans, planning and managing the acquisition and integration of the former Hospital of Saint Raphael. She also worked on the conceptualization and initial planning for the Center for Clinical Neurosciences at the Saint Raphael Campus. She currently leads the Digestive Health service line, Urology, Dermatology and Plastic Surgery for Yale New Haven Health System.

Prior to joining Yale New Haven Hospital, Gratton worked for Bombardier and IMS Health as an Internal Consultant, where she conducted program risk assessments as well as market and financial analyses of new business line acquisitions.

Outside of her professional role, she enjoys spending time with her husband, children, cats and friends. 

Yollanda London, MPH
Interim Chief Strategy Officer 
Yale School of Medicine, Yale Medicine Administration
[email protected]

Yollanda London was born in Guyana and raised in Jamaica, Venezuela, and Costa Rica. She holds a bachelor of science degree from Southern Connecticut State University and a master of public health from the Yale School of Public Health.

After completing the administrative fellowship, she joined Yale New Haven Hospital’s ambulatory division, and later transitioned to business development with Yale New Haven Health. Her leadership positions in various healthcare organizations have further enhanced her knowledge and expertise.

Currently, Yollanda serves as the Chief Business Development and Planning Officer at Yale Medicine. In this role, she takes on a key leadership position in supporting the aligned physician enterprise. She leads due diligence efforts for transactions, co-leads joint strategic planning initiatives with the Office of Strategy Management, oversees provider network analytics and supports the physician business planning process. With her extensive expertise and strategic mindset, Yollanda is instrumental in driving the growth and success of the physician enterprise network and business development efforts.

Outside of her professional role, she enjoys spending time with her family, running and working out.

Theresa Zinck-Lederer, MPH, CPMSM, CPCS
Executive Director, Medical Staff Services
Medical Staff Administration
Yale New Haven Health
[email protected]

Theresa Zinck-Lederer was born and raised in Connecticut. She earned her Bachelor of Arts degree from Wesleyan University and master’s degree in Public Health with a concentration in Health Policy and Administration from the Yale University School of Epidemiology & Public Health.

She completed her administrative fellowship training which included supporting hospital quality improvement projects. One such project involved the evaluation of first case start times in the operating rooms. She also supported strategic planning and marketing initiatives. In the latter part of the fellowship, Zinck-Lederer worked with the medical staff and administrative leadership to establish a Yale New Haven Hospital medical staff independent physician group.

Zinck-Lederer has continued her career at Yale New Haven Hospital and, subsequently, Yale New Haven Health to support the administrative processes related to physicians, the medical staff and each of the health system’s Chief Medical Officers. Her current focus is on the standardization of operations and foundational documents including privileging and credentialing, medical staff bylaws and medical staff policies.

Outside of her professional role, she enjoys spending time with her husband, family and her Yorkshire terrier, walking and going to the beach.