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Sloan Student Ambassadors

The Sloan Student Ambassadors are residential MHA, BS/MHA, and MBA/MHA graduate students who are excited to speak with you to answer your questions about the Sloan Program in Health Administration and to discuss your healthcare passions, interests, and motivations. Each ambassador is a volunteer and can be reached via email to coordinate either a phone call or Zoom call. Please allow up to 72 hours for Ambassadors to respond.

Learn more about our ambassadors


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Channing Hamilton

Channing is a second year student in the Sloan Program at Cornell University. She was born and raised in Lubbock, TX, and spent her undergraduate years in Austin at the University of Texas where she earned her Bachelor of Science in Public Health and a Minor in Business. Prior to graduate school, she interned at MaineHealth on the strategic planning team and worked as a Patient Care Host at Crossover Health, a preventative and primary care provider to large US employers and their employees. Channing is passionate about providing high-quality patient-centered care and wants to continue learning more about value-based models, operations, and physician relations and management. This summer in New York City she worked as a Graduate Intern for NewYork-Presbyterian in the Physician Services department for the Medical Group. Channing is exploring administrative fellowships after graduation and hopes to work for a health system that prioritizes collaboration and health equity.

Outside of academics, Channing enjoys traveling with friends and family, cooking, scuba diving, and spending time outside.

You can reach her by emailing or connect on Channing’s LinkedIn.

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David Martinez Vicenttin 

David is a class of 2024 MHA candidate at Cornell University. David was born in Cancun, Mexico, and raised in Miami, Florida where he completed his Bachelor of Health Services Administration at Florida International University. He obtained the credentials of a Certified Dietary Manager (CDM) through the University of Florida as he gained experience in diverse healthcare settings, ranging from acute care to rehabilitation centers and senior living, in which he led and managed nutritional operations with a focus on patient experience and leading quality assessment and performance improvement efforts. 

This summer David worked as a Graduate Administrative Intern at Massachusetts General Hospital within the Cancer Center. He is also the Leadership Fellow for the Medical Organization for Latino Advancement (MOLA) a non-profit organization based in Chicago. With this foundation, he aspires to enhance the leadership and analytical skills needed to improve access and quality care at the international level.

In his free time, he enjoys traveling, trying new recipes, and outdoor activities.

You can reach him by emailing or connect on David’s Linkedin.

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Ayman Hashmi

Ayman Hashmi is a first-year student in the Sloan Program in Health Administration at Cornell University. He holds a bachelor’s degree in public health from the University of Waterloo and is proud to serve as Sloan’s first Canadian Ambassador from Mississauga, Ontario.

During his undergraduate years, Ayman discovered his passion for digital health transformations taking place in Canada’s healthcare space. He collaborated with graduate professors on various  healthcare consulting projects related to the Canadian healthcare system, focusing on provincial and municipal initiatives taking place in Ontario. These experiences allowed Ayman to gain a  strong background in Canadian healthcare system operations, data privacy laws and regulations as well as interoperability standards being implemented in Canada’s universal healthcare system. Ayman is enthusiastic about connecting with prospective Canadian students who are considering Sloan for their postgraduate studies. He aims to share his experiences and insights to help them make informed decisions about their educational path. 

Outside of the Sloan program, Ayman enjoys trying out new pizza spots, cooking and working out.

You can reach him at or connect on Ayman’s Linkedin.

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Sparkle Sillim

Sparkle Sillim (she/her/hers) is a second year Sloan student. Her home is in The Bronx, NYC but was born and raised in Ghana. She graduated in May 2022 with a bachelor’s degree in Human Biology, Health and Society from Cornell and stayed to earn her master’s degree. Between graduation and her first year at Sloan, Sparkle explored NYC more and fell in love with it while interning at The Enclave Nursing and Rehabilitation Center, which she continued through her Fall semester. She served as an administrative and patient relations intern working closely with the human resource department. For her graduate summer internship, Sparkle interned at the Cleveland Clinic, Florida as an Administrative Intern for the Medical Operations Florida Region. After enjoying her internship, she knows she has a lot more to learn and is therefore applying for Administrative Fellowships to start her career as a healthcare leader. 

Outside of academics, Sparkle loves to listen to music, watch TV shows (all genres except horror) and getting to know her friends on a much deeper level with games like We’re Not Really Strangers. 

You can reach her at or connect on Sparkle’s LinkedIn

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Marie-Ange Kanellos

Marie-Ange (she/her/hers) is second-year Sloanie. Marie-Ange is from Kingston, Ontario, where she earned her Bachelor of Science (Honors) in Life Sciences with a Health Studies minor at Queen’s University. Before Sloan, Marie-Ange oversaw the Staying Connected Program at Kingston Health Sciences Centre, including coordinating the four programs in its portfolio. During her time at Cornell, Marie-Ange has also served as the VP of Recognition for Women+ in Healthcare Leadership. Marie-Ange is the Vice President of Community Service for the Sloan Student Association, and co-chairs the Academic Advisement Committee in her role. Last summer, Marie-Ange completed her administrative internship at the Cleveland Clinic in their Neurological Institute in Cleveland, OH.

Outside of the Sloan Program, Marie-Ange loves to cook, run and take fitness classes, dance, find a new patio, and explore new places.

You can reach her at or connect on Marie-Ange’s LinkedIn.

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Christopher Tran

Chris Tran (he/him) is a second-year Sloan student from Dallas, Texas. He also completed his undergraduate degree at Cornell through the 5-year BS/MHA program. Within Sloan, Chris serves as the student VP of Corporate Affairs, helping to bring exciting companies to Cornell. He is also co-President of the Sloan Consulting Club. Last summer, Chris worked at Deloitte as a Healthcare Summer Associate, supporting a large pharmacy benefit manager. 

Outside of the Sloan Program, Chris loves to cook, lift weights, and try new restaurants.

You can reach him at or connect on Chis’ LinkedIn.

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Natalia Valdivia

Natalia (she/her) is a second-year student enrolled in the Sloan Program in Health Administration at Cornell University. Her educational background includes an undergraduate degree in Engineering from the University of Chile, where she demonstrated a commitment to technical expertise, innovation, and productivity. Her experience in healthcare began at a healthcare organization before she joined the MHA program.

Natalia is driven by a passion for enhancing the quality of life for patients and their families. During a summer internship, she worked in the Performance Excellence Department at UCLA Health, where she demonstrated a results-oriented approach and a commitment to continuous learning. Her experience in the healthcare field has equipped her with valuable hands-on skills.

Natalia enjoys running, weightlifting, racquetball, and tennis in her free time. She also enjoys traveling, spending time with friends and family, watching movies, and drawing.

You can reach her at or connect on Natalia’s LinkedIn.

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Natalie Stopfer

Natalie Stopfer (she/her/hers) is currently a second-year MHA student with the Sloan Program class of ‘24. She is serving as Vice President of Internal Affairs for the 2023-2024 academic year. Natalie earned her Bachelor of Science in Nursing from the University of Minnesota, where she was born and raised. Following graduation in 2020, she worked in Minneapolis, MN for two years as an inpatient behavioral health nurse. Natalie spent her summer in Cleveland, Ohio as an Administrative Intern at Cleveland Clinic in the Respiratory Institute. Her interests in healthcare include marketing, digital health/innovations, and mental health care. She looks forward to visiting more Finger Lake wineries and going to Cornell hockey games while still in Ithaca. 

Outside of Sloan, Natalie enjoys going for hikes with her 2 y/o pup, Clove, trying new tasty tapas, and playing pickleball!

You can reach her at or connect on Natalie’s LinkedIn.

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Samyukta Singh

Samyukta Singh is a 2nd-year in the Sloan Program in Health Administration at Cornell University. After being born in India, spending her childhood years in Singapore and teenage years in Houston, she graduated from University of Texas at Austin with a degree in Human Biology. After receiving her undergraduate degree, she spent a year and a half working for eClinicalWorks, where she provided up-front solutions to clients implementing new EHRs and focused on increasing patient engagement, telemedicine, and self-scheduling services.

She currently serves as the President of Women+ in Healthcare Leadership (W+IHL), Vice President of Operations and Partnerships Committee Lead for Sloan Student Association, and as a BioEntrepreneurship Fellow at Cornell’s Johnson Graduate School of Management. In the summer of 2023, she interned at a boutique healthcare strategy firm called Veralon as a Strategy & Planning Associate. As part of her internship, she worked on diverse client engagements such as a value-based care payer contracting strategy for a Clinically Integrated Network (CIN), a service line feasibility project for a Critical Access Hospital (CAH) and research projects that included hospital M/A activity modeling, ambulatory surgery center (ASC) financial benchmarking and physician engagement research in Accountable Care Organizations (ACOs). 

She would like to use her skills and experiences in the future to partake in increasing patient equity, decreasing human errors, improving clinical outcomes and facilitating better care coordination for everyone.

You can reach Samyukta at

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Alejandra Rivera 

Alejandra (Ally) Rivera (she/her/hers) is a 2nd-year dual Master of Health Administration and Master of Public Administration fellow. With the duality of her studies, Alejandra is specializing her studies in healthcare policy to further explore methods that will increase equity within the U.S. healthcare system. Prior to attending Cornell, Alejandra acquired her Bachelor of Science in Public Health, with a minor in Political Science, from Hunter College, City University of New York (CUNY). She has worked for government agencies, such as the House of Representatives and the New York Assembly, and for healthcare organizations, such as Memorial Sloan Kettering Cancer Center, Iroquois Healthcare Association, and Mayo Clinic. Her most recent experience was this past summer, working for the Strategy Department, Development and Planning Division, at Mayo Clinic. Alejandra is passionate about improving equity, access, and delivery of quality care to underrepresented communities, especially the Hispanic and Latinx population. 

Outside of her studies, Alejandra enjoys traveling, trying different work out classes, and listening/dancing to Latin Urban music. 

You can reach her at or on Alejandra’s LinkedIn!