ICAP

Building the future

…of global public health

REACH Fellows

REACH fellows are problem solvers in public health preparedness. They are leaders who can find structure and set priorities amid chaos and uncertainty. They are innovators driven to find practical solutions to complex public health emergencies. They are collaborative yet decisive when humanity is faced with threats to health. And they are relentless in their pursuit of building resilient health systems.

Current Fellows

Gabrielle Henry-Clarke
Gabrielle Henry-Clarke

Support Services/Patient Transport Manager

Gabrielle is an experienced healthcare operations leader with more than 14 years of service at New York-Presbyterian Hospital. She currently serves as an Operations Manager overseeing Patient Transport, Mailroom and Morgue operations across the Columbia and CHONY campuses. In this role, she leads diverse teams, manages daily operations and staffing, monitors performance, and works collaboratively with clinical and support departments to ensure safe, efficient, and patient-centered service. She holds an MBA in Business with a concentration in Human Resources, a bachelor’s degree in Hospitality Management, and an associate degree in Culinary Arts. Gabrielle’s leadership approach is grounded in accountability, clear communication, employee development and continuous improvement. She is passionate about strengthening teams, developing future leaders, improving operational processes, and creating a workplace culture where employees feel supported while maintaining high standards of performance, professionalism, and patient care.

Carmen Huynh
Carmen Huynh

Director of Nursing, Central Sterile and Endoscopy Reprocessing (Cornell Sphere)

Carmen Huynh, MPA, RN, NEA-BC, CNOR, CRCST is a Director of Nursing for Perioperative Services at NewYork-Presbyterian Hospital. She provides strategic and operational oversight for Central Sterile Processing and Endoscopy Reprocessing services across six hospital campuses, including NewYorkPresbyterian Queens, Brooklyn Methodist, Weill Cornell, and Lower Manhattan. With more than a decade of perioperative nursing experience, Carmen has developed expertise in operations management, quality improvement, workforce optimization, and healthcare innovation. She earned her Bachelor of Science in Nursing from Hunter College and a Master of Public Administration from New York University’s Robert F. Wagner Graduate School of Public Service. She is currently pursuing her Doctor of Nursing Practice degree at Case Western Reserve University. During the height of the COVID19 pandemic, Carmen led NewYork-Presbyterian’s staffing command center, where she managed complex workforce deployment efforts across the health system and developed a passion for healthcare operations and systems leadership. She currently leads multiple interdisciplinary committees and enterprise-wide process improvement initiatives focused on operational excellence, patient safety, and advancing perioperative and sterile processing practices.

Sacha Keenan
Sacha Keenan

Director of Support Services

Sacha Keenan is a healthcare operations leader with responsibility for Environmental Services, Food & Nutrition, and Patient Transport at NewYork-Presbyterian Lower Manhattan Hospital. In the role of Director of Support Services, Sacha provides strategic and operational leadership focused on safe, reliable, and patient-centered care. With experience spanning frontline operations, workforce planning, process improvement, compliance, and technology-enabled workflow transformation, Sacha works across disciplines to strengthen service delivery and advance organizational priorities. This includes supporting the thoughtful adoption of tools such as Epic, Sentact, pCare, automation, and artificial intelligence to improve efficiency while maintaining a strong focus on patient safety and staff engagement. Sacha is known for a collaborative, approachable leadership style grounded in accountability, clear communication, employee development, and continuous improvement. A former collegiate athlete, Sacha brings the same commitment to preparation, teamwork, and long-term performance to healthcare leadership. Prior to the current position, Sacha held progressive roles in healthcare support services, developing broad operational experience and a practical understanding of the teams and systems that support the patient experience. Sacha holds an MBA from the University of Arizona Global Campus and bachelor’s degrees in Dietetics and Nutrition & Food Sciences from the University of Vermont. She believes great healthcare extends beyond the bedside and is driven by the people and services that support every patient’s journey.

Karla Portocarrero
Karla Portocarrero

Patient Care Director, Bone Marrow Transplant

Karla Portocarrero is an accomplished nurse leader with more than 15 years of nursing experience and over five years in progressive leadership roles. She began her nursing career in Emergency Medicine, where she developed a strong clinical foundation in managing complex and high-acuity patient populations. Her passion for patient-centered care and professional growth led her to transition into Oncology Nursing, where she has built extensive expertise in caring for patients with hematologic and oncologic conditions.  Karla currently serves as the Patient Care Director of the Bone Marrow Transplant Unit at New York-Presbyterian/Columbia University Irving Medical Center. In her role, she is committed to fostering a culture of safety, excellence, trust, and staff engagement while ensuring the highest quality of care for patients and families navigating complex treatments. She is recognized for her collaborative leadership style, operational excellence, and dedication to creating an environment where both patients and team members can thrive. A passionate advocate for professional development, Karla finds great fulfillment in coaching, mentoring, and empowering others to reach their personal and professional goals. She believes that strong leadership is built on authenticity, continuous learning, and meaningful relationships. Through her work, she strives to inspire future nurse leaders and cultivate teams that deliver exceptional patient outcomes. As she begins her fellowship journey, Karla looks forward to expanding her leadership expertise, strengthening her ability to drive innovation and change, and continuing to make a lasting impact on the nursing profession and the communities she serves.
Kathleen Queenan
Kathleen Queenan

Physician Assistant, Hospital Medicine, NYP/Columbia

Kathleen’s experience as a frontline healthcare provider bridges clinical care with health systems thinking. Since 2022, she has practiced in the Department of Hospital Medicine at NYP-Columbia, serving as the primary contact on the interdisciplinary care team for a diverse patient population. Kathleen holds dual Bachelor’s degrees in Biology and Spanish from Miami University, a minor in Molecular Biology, and a Master of Science in Physician Assistant Studies from Rush University, where she completed her capstone research in antibiotic stewardship. At NYP-Columbia, she piloted an emergency preparedness curriculum for hospitalist PAs through the VP&S Simulation Center and founded NYP PAs for Global & Community Health. She is drawn to REACH’s mission of building durable, community-centered health solutions — and brings a vision-driven leadership style rooted in the belief that health is a human right.
Lisa Rivera
Lisa Rivera

Director of Rehabilitation Services

Lisa Rivera, MS, OTR/L, is Director of Rehabilitation Services at NewYork-Presbyterian/Weill Cornell Medical Center, bringing over 24 years of clinical and rehabilitation leadership experience. She provides strategic and operational oversight for physical therapy, occupational therapy, and speech-language pathology across acute care, inpatient rehabilitation, and outpatient settings. Her leadership focuses on advancing the patient experience, clinical quality, access to care, regulatory readiness, staff engagement, and organizational performance. Her accomplishments include strengthening rehabilitation operations across NYP, supporting successful CARF accreditation surveys, advancing regulatory readiness and interdisciplinary performance improvement, leading various program expansions- including the planning and successful opening of Och Spine NewYork-Presbyterian PT at The Spiral. As hospital liaison to the NYP Weill Cornell Inpatient Adult Patient and Family Advisory Council, she champions the patient voice and promotes meaningful patient and family participation in hospital decision-making.
Rushi Shah
Rushi Shah

Manager, Operations

Rushi Shah is a healthcare leader whose career spans emergency medical services, systems engineering, performance improvement, and healthcare operations. Since joining NewYork-Presbyterian in 2018, he has held progressive leadership roles focused on improving operational performance, strengthening organizational readiness, and advancing strategic initiatives across a complex academic health system.  Prior to joining NewYork-Presbyterian, Rushi worked as an EMT-Critical Care provider, where he gained firsthand experience responding to emergencies in dynamic, high-pressure environments. That experience fostered a lasting appreciation for the importance of preparedness, teamwork, and adaptability in delivering effective care during times of uncertainty. Upon joining NewYork-Presbyterian, Rushi served as a Clinical Systems Engineer within the Quality and Patient Safety department, leading performance improvement initiatives using Lean, Six Sigma, and A3 problem-solving methodologies. Through this work, he partnered with multidisciplinary teams to improve processes, enhance operational efficiency, and support patient care outcomes. Today, as Manager of Operations, Rushi works closely with frontline staff, physicians, operational leaders, and senior leadership to address operational challenges, improve processes, and support key initiatives across the health system. His approach is guided by a passion for systems thinking, root cause analysis, and continuous improvement, applying Lean principles to solve complex healthcare challenges and drive sustainable organizational change. Rushi holds a Bachelor of Science in Biomedical Engineering and a Master of Science in Industrial Engineering. He is passionate about applying systems thinking, Lean methodologies, and data-driven decision making to improve processes and solve complex healthcare challenges.
Jeff Wagner
Jeff Wagner

Senior Director, Intelligence & Emergency Management

Jeff Wagner is the Senior Director of Intelligence and Emergency Management at NewYork-Presbyterian, where he leads enterprise investigations, intelligence, insider threat, emergency management, and risk management initiatives. With more than 30 years of experience spanning healthcare, federal law enforcement, emergency management, homeland security, and government contracting, he has built and led programs focused on complex global investigations, crisis management, organizational resilience, and public safety. Prior to joining NYP, Jeff served in several senior leadership positions with the U.S. Drug Enforcement Administration (DEA), including Assistant Special Agent in Charge (ASAC) and Chief of Emergency Operations, where he directed large-scale investigative, intelligence, enforcement, and national-scale emergency preparedness programs. After retiring from DEA 2023, he also managed a FEMA, Office of National Continuity Programs (ONCP) emergency communications contract supporting the Integrated Public Alert and Warning System (IPAWS). Throughout his career, Jeff has led complex, high-risk operations and developed enterprise-wide governance and risk management frameworks. He is passionate about advancing security, preparedness, and resilience strategies that protect people, operations, and critical infrastructure.
Elyse Zlotnikov
Elyse Zlotnikov

Director of Talent Acquisition

Elyse Zlotnikov is a Director of Talent Acquisition at NewYork-Presbyterian, where she leads clinical and non-clinical recruiting, oversees large-scale staffing initiatives for expansions and Joint Ventures, drives workforce development, career programming, and community-based employment partnerships and created the first healthcare-based Returnship program for immigrants, refugees, and asylum seekers. She is also a founding board member of Haven Charter High School for Health Sciences in the Bronx, holds a bachelor’s degree from Saint Peter’s University and a Masters of Health Care Innovation from University of Pennsylvania.

For questions or further information, please contact Claire Raether, Training and Education Specialist and Fellowship coordinator at cr3144@cumc.columbia.edu.