Yale Medical Group Management

Senior Management

Paul Taheri, MD, MBA

Paul Taheri, MD, MBA

Chief Executive Officer

Oversees Yale Medical Group and the senior management group.


Ronald J. Vender, MD

Ronald J. Vender, MD

Chief Medical Officer

Leads efforts to improve the quality and safety of medical care, to develop and strengthen clinical programs, and to maintain the highest level of practice standards.


Frederick Borrelli

Frederick Borrelli

Chief Operating Officer

Leads efforts to improve and standardize clinical operations, including critical initiatives focused on reducing the cost of practice, elevating the patient experience, optimizing clinical space utilization, and integrating new physicians and acquired practices.


Kimbirly Moriarty

Kimbirly Moriarty

Chief of Network Strategy

Responsible for the centralization of YMG’s efforts toward building its physician network, developing strategic alliances and partnerships, and pursuing new practice acquisitions.


Babar Khokhar, MD, MBA

Babar Khokhar, MD, MBA

Medical Director of Ambulatory Services

Leads efforts to improve the ambulatory practice; directs YMG’s Clinical Optimization Service to enhance the experience of patients and providers by identifying opportunities for increased efficiency, ensuring implementation of YMG standards, and sharing successful strategies across the practice.


Judy Guay

Director, Compliance

Oversees medical billing compliance, clinical trials compliance, billing audits, third party reviews, compliance education/training, and YNHH compliance relations.


Marie Follo

Director of Practice Management

Responsible for the oversight and management of the Yale Medical Group centralized physician practices.Manages patient satisfaction for YMG.


Joni Jones

Manager, Credentialing

Serves as the primary liaison between physicians and their staff, clinical departments, managed care organizations and government programs regarding credentialing policies and procedures, provider participation, and all issues related to access for delivery of patient services.


Sally Thibodeau

Director of Business Office Operations, Patient Financial Services

Responsible for the management of centralized operational areas of Patient Financial Services: central registration, insurance follow-up and cash posting, customer service, and internal collections; consulting and implementation of phone systems.


Sally Chesney, MHS, MT(ASCP), CPC

Director, Revenue Integrity & Analytics

Responsible for data, systems and processes to ensure accurate and timely reimbursement of professional services encompassing coding and pricing, edits and logic, claim and payment processing, payer performance, quality assurance and audit, comprehensive data analysis, and end user training on revenue cycle processes and practice development.