The Revenue Cycle Operations Administrative Fellowship at the Children’s Hospital of Philadelphia is a two-year program. This fellowship program offers a unique opportunity to gain exposure to the complex relationship between revenue cycle management and clinical operations within a health system. The goal is to create a talent pipeline for critical revenue cycle positions. 

The Revenue Cycle Administrative Fellowship Program is housed within RCO in the Division of Financial Services. RCO focuses on streamlining the revenue cycle through enhanced management insight and exposure of all aspects of revenue cycle management: Scheduling, Registration, Financial Clearance, Coding, Revenue Integrity, Reimbursement, Utilization Review, Billing, Collections, Managed Care Contracting, and Customer Service. Our program is designed to provide in-depth experience and knowledge of how revenue cycle financial management functions at all levels across the health system.

The fellow will be immersed in the revenue cycle through project-based work and shadowing rotations in the first year. Rotations in a more focused area in the revenue cycle will take place in the second year. Rotations in the following core areas will be included in the first year:

• Service Access, Financial Clearance, and Registration
• Mid-Revenue Cycle Management (Coding, HIM, UR, and Revenue Recognition)
• Billing/Collections

The fellow will have multiple opportunities to interact and participate with leadership and staff of all CHOP entities to enhance their education of how the CHOP contributes to clinical operations and our patients' healthcare experience.

Informational Webinar

Join us to learn more about the CHOP Revenue Cycle Fellowship.

• Webinars: Register at the links below
  • July 28th, 2026, 12:00– 1:00 PM EDT - CHOP Administrative Fellowship Information Session - July 28th
    • The SVP and COO of Care Network will be there!
  • August 21st, 2026, 12:00 - 1:00 PM EDT - CHOP Administrative Fellowships Information Session - August 21st
    • The VP of Revenue Cycle will be there!
  • September 2nd, 2026, 5:00 – 6:00 PM EDT - CHOP Administrative Fellowships Information Session - September 2nd

How to Apply

The RCO Administrative Fellowship has moved its fellowship application for the 2027-2029 application cycle to the National Administrative Fellowship Centralized Application System (NAFCAS).

Timeline

• Application opens on July 1, 2026.
• All application materials must be submitted no later than September 10, 2026. Applications will be reviewed on a rolling basis once all required materials are received.
• Selected applicants will be invited to a first-round interview and if the application is selected to move forward, the applicant will be invited on-site to the Children’s Hospital of Philadelphia Sept. 30th - Oct. 1st, 2026.
• A final decision will be communicated to final round applicants shortly following the final round interview.

Required Material

To apply, please submit the following materials via NAFCAS by 11:59pm on 9/10/26:

• Current Resume (2 Pages Maximum)
• Personal Statement of Interest (1 page maximum)
  • Why are you interested in pursuing an administrative fellowship in revenue cycle at CHOP? Include your short and long-term goals of pursuing a career in pediatric health. Describe your top 3 values and why they are important to you.
• Official Graduate and Undergraduate Transcripts
• Two (2) Letters of Recommendation:
  • (1) Academic,
  • (1) Professional
  • (1) Other Optional (Academic or Professional)

Selection Criteria

The Administrative Fellowship meets all of ACHE's criteria to participate as a program. Our goal is to find a candidate who will be the best fit for the organization and will benefit most from the experience.

The fellowship begins in July of each year. Ideal candidates for the position will meet the qualifications below.

CHOP seeks candidates from strong masters-level-accredited programs. Qualified candidates for the Administrative Fellowship Program are Masters-prepared individuals who have completed the degree requirements within one year prior to application or upon completion of the fellowship in one or more of the following fields of study or related degree programs:

• Public health
• Business administration
• Health services administration
• Hospital or Health administration

Candidates with a master’s degree focused in healthcare administration from a program accredited by the Commission on Accreditation of Healthcare Management Education (CAHME) are required. 

Candidates may have working experience through areas such as:

• Employment
• Externship
• Internship
• Fellowship

Additionally, candidates should have:

• A strong interest in revenue cycle operations.
• A foundational knowledge in the core competencies of healthcare administration
• Record of leadership and teamwork, and demonstration of excellent verbal and written communication skills required. 

Other qualifications:

• Possesses broad knowledge of current and historical perspectives in areas such as: healthcare business management, administration, clinical practice management, finance, human resources and/or information systems.
• Candidates must be self-starters willing to work in a fast-paced, multidisciplinary, system environment. 

If, for whatever reason, you are unable to provide one or more of these application materials, please email RCOAdminFellowship@chop.edu.

Mentorship

Primary Executive Leadership Preceptor: Fabian Stone

Fabian Stone is the Vice President of Revenue Cycle at the Children’s Hospital of Philadelphia. With over 25 years in healthcare leadership, Fabian Stone has an innovative focus on clinical and revenue cycle management. He excels in leading high-performance teams to achieve impactful, mission-driven results and implementing advanced financial strategies, all while prioritizing the patient experience. Before joining CHOP, Fabian held various leadership positions at the Duke University Health System, where he honed his expertise in optimizing revenue cycles and implementing advanced financial strategies. 

As the VP of Revenue Cycle at CHOP, he is currently leading the centralization of the hospital's revenue cycle structure, fostering a culture of transparency and inclusivity. Fabian is dedicated to advancing the use of technology and analytics to enhance operational efficiency and patient outcomes. In addition to his operational achievements, Fabian is dedicated to mentoring and developing future leaders in healthcare.

Meet the Fellows

1st Year Fellows

Chloe Zieroff

Chloe Zieroff is a Master of Health Administration candidate in the Sloan Program at Cornell University, where she focuses on health information management, revenue cycle strategy, and quality improvement. She earned her Bachelor’s degree in Health Sciences Leadership and Policy with a minor in Business, building a strong foundation in healthcare operations and finance.

Prior to joining Children’s Hospital of Philadelphia, Chloe gained hands-on experience advancing hospital operations and patient-centered initiatives at Manning Family Children’s Hospital. There, she led projects spanning behavioral health workflow optimization, implementation of an e-Consult program across multiple service lines, and initiatives supporting Safe Sleep certification and community health mapping. These experiences strengthened her ability to work across clinical and administrative teams, align operational strategy with patient outcomes, and drive measurable improvements in access, efficiency, and quality of care.

Chloe is deeply inspired by CHOP’s mission and collaborative culture, particularly its commitment to delivering innovative, patient-centered care for children and families. She is drawn to the intersection of revenue cycle and innovation, with a particular interest in leveraging AI and automation to improve denials prevention, streamline operations, and enhance financial sustainability. During her fellowship, she aims to deepen her expertise in pediatric revenue cycle systems while contributing to data-driven strategies that support both organizational performance and patient-centered care.

Tyler Matt

Tyler earned his Master of Healthcare Administration from The Ohio State University in May 2026 following a military career and the completion of a B.S. degree in Bioengineering from Clemson University.

Prior to pursuing a career in healthcare, Tyler spent eight years serving as a Submarine Officer in the U.S. Navy based out of Norfolk, Virginia. Through extensive experience in international, industrial, and undersea environments, he developed strong leadership, operational, and problem-solving skills that now inform his continued commitment to a life of service in the pediatric hospital setting.

Since leaving the Navy, Tyler has balanced graduate studies with hands-on healthcare experience at Connecticut Children’s and Licking Memorial Hospital. During his fellowship at CHOP, he seeks to continue growing personally and professionally by developing a deeper understanding of revenue cycle operations while integrating into the Philadelphia community.

2nd Year Fellow

Ahmad Kassar

Ahmad Kassar is a second-year Revenue Cycle Operations Administrative Fellow at the Children’s Hospital of Philadelphia (CHOP). He earned his Master of Healthcare Administration from California Baptist University in August 2024 after completing undergraduate studies in Public Health Policy and Business Management at the University of California, Irvine. Prior to joining CHOP, Ahmad gained experience in public health laboratory operations, where he supported financial management, billing processes, and the implementation of an EPIC-based LIMS/EMR system.

During his first year of the fellowship, Ahmad contributed to initiatives aimed at advancing revenue cycle maturity, with a focus on process improvement and the integration of emerging technologies such as artificial intelligence and automation. He also led work to map complex billing processes for a clinical trial and collaborated with payors to identify strategies to reduce claim denials and improve overall payor experience.

In his second year, Ahmad is focused on deepening his experience in patient financial services and enterprise finance while continuing to explore AI- and automation-driven solutions to enhance operational efficiency and revenue cycle performance. He is motivated by CHOP’s commitment to innovation and excellence in pediatric healthcare and looks forward to contributing to its continued advancement.

Previous Fellows

Aditi Patel

From 2024–2026, Aditi Patel served as an Administrative Fellow at the Children's Hospital of Philadelphia, where she supported a variety of enterprise-wide initiatives focused on revenue cycle transformation, operational innovation, and strategic collaboration. During her fellowship, Aditi worked on projects related to robotic process automation (RPA) and artificial intelligence within revenue cycle operations, helping identify opportunities to improve efficiency and reduce administrative burden. She also supported work related to Cell and Gene Therapy operations and financial processes, enterprise downtime preparedness efforts, and the launch of multiple Clinical Revenue Integrity Committees to strengthen collaboration between clinical and revenue cycle leadership. Since completing her fellowship, Aditi has transitioned into healthcare consulting at Chartis, where she supports healthcare organizations in strategic and operational transformation initiatives.

Aditi graduated from Columbia University in May 2024 with a Master of Health Administration. While in school, she interned at a healthcare consulting firm focusing on revenue cycle management, where she developed a strong interest in healthcare finance, operations, and strategy. She also earned her Bachelor’s degrees in Exercise & Sport Science and Public Policy, along with a minor in Health and Society, from University of North Carolina at Chapel Hill in 2022.

Arjun Natarajan

Arjun Natarajan is a second-year Administrative Fellow with the Revenue Cycle team at the Children's Hospital of Philadelphia (CHOP), supporting clinical, operational, and finance teams across Behavioral Health, Access/Pre-Service, Middle Revenue Cycle, and Patient Financial Services. His fellowship work has centered on Behavioral Health initiatives spanning the full patient journey - from scheduling and registration through coding and billing - including the implementation of Advanced Practice Providers at CHOP's Cedar Avenue facility, the transition of professional behavioral health coding to a new vendor (Kode Health), and building a more structured approach to coding audits. He has also partnered cross-functionally with DTS, Epic Teams, Internal Audit, Corporate Compliance, and CHOP Legal on documentation, billing, and regulatory efforts.

Looking ahead beyond his fellowship, Arjun is intent on pursuing a role in Middle Revenue Cycle, where he can stay close to how clinical departments administer care and help align those activities with medical and payor policies. By building a career in this space, Arjun intends to chart a path closer to being a hospital leader that can bridge the work of hospital finance with the work of clinical service lines at CHOP. Outside of work, he is originally from San Francisco and enjoys hiking, biking, swimming, live music, basketball, and video games - and is a proud fan of Matt Damon films. His favorite ice cream flavor is Neapolitan.

Mazen Oneissi, MD, MPH

Mazen Oneissi is the first fellow and alumnus of our administrative fellowship program. He holds a Master of Public Health (MPH) from Johns Hopkins University, where he specialized in healthcare management and finance, as well as risk sciences and public policy. Before transitioning to healthcare management, Mazen worked as a physician and genetics researcher across several esteemed institutions.

During his fellowship, Mazen focused on bridging the gap between clinical and financial operations in healthcare, striving to enhance the patient experience while safeguarding the financial integrity of healthcare providers and institutions. He played a pivotal role in launching and developing the Clinical Engagement Strategy within the revenue cycle department, a project that has now become the cornerstone of his current position at CHOP.

Outside of his professional endeavors, Mazen enjoys perfecting the art of baking, creating intricate French pastries and sourdough breads in his spare time.

Contact us

For additional information about the administrative fellowship program, please reach out to: RCOAdminFellowship@chop.edu

Equal Opportunity

Children’s Hospital of Philadelphia is an equal opportunity employer, committed to creating an environment where all people feel valued and respected and can contribute to their fullest potential.  A non-discrimination and harassment policy is strictly enforced. No applicant for employment shall be subjected to discrimination because of race, color, sex, national origin, religion, disability, age, sexual orientation or family status.

Other Requirements

To carry out its mission, it is of critical importance for  Children’s Hospital of Philadelphia (CHOP) to keep our patients, families and workforce safe and healthy and to support the health of our global community. In keeping with this, CHOP has mandated all workforce members (including trainees) onsite at any CHOP location for any portion of their time be vaccinated for COVID-19 as a condition of employment.

This mandate also applies to workforce members or trainees performing work for CHOP at non-CHOP locations. Additionally, all workforce members based in, or regularly scheduled to work at, any New Jersey location are mandated to be both vaccinated and boosted for COVID-19, with booster timing consistent with applicable guidelines. The CHOP COVID-19 vaccine mandate is in alignment with applicable local, state and federal mandates. CHOP also requires all workforce members and trainees who work in patient care buildings or who provide patient care to receive an annual influenza vaccine. Employees may request exemption consideration for CHOP vaccine requirements for valid religious and medical reasons. Please note start dates may be delayed until candidates are fully immunized or valid exemption requests are reviewed. In addition, candidates other than those in positions with regularly scheduled hours in New Jersey, must attest to not using tobacco products.

Children's Hospital of Philadelphia is an equal opportunity employer. We do not discriminate on the basis of race, color, gender, gender identity, sexual orientation, age, religion, national or ethnic origin, disability, protected veteran status or any other protected category. CHOP is a VEVRAA Federal Contractor seeking priority referrals for protected veterans.

CHOP is committed to building an inclusive culture where employees feel a sense of belonging, connection and community within their workplace. We are a team dedicated to fostering an environment that allows for all to be their authentic selves. We are focused on attracting, cultivating and retaining diverse talent who can help us deliver on our mission to be a world leader in the advancement of healthcare for children.

We strongly encourage all candidates of diverse backgrounds and lived experiences to apply.