Montefiore Medical Group Leadership
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Primary Care

Montefiore Medical Group Leadership

The leadership team at Montefiore Medical Group (MMG) brings extraordinary levels of expertise and experience to our organization. MMG leadership upholds the highest standards of excellence and shows a dedication to the a model of care that addresses the needs of our patients in the the Bronx and Westchester County.

We invite you to get to know our executives and medical directors:

Executive Leadership

Andrew Racine MD PhDAndrew D. Racine, MD, PhD
Senior Vice President & Chief Medical Officer

Andrew D. Racine, MD, PhD, is Senior Vice President and Chief Medical Officer at Montefiore Medical Center and Professor of Clinical Pediatrics at Albert Einstein College of Medicine. He is responsible for Quality and Safety, Medical Affairs, Graduate Medical Education, and the 22-site Montefiore Medical Group.

Dr. Racine joined Montefiore in 1992 as Chief of the Division of General Pediatrics, where he was responsible for two large academic practices that include attending pediatricians as well as pediatric residents. Prior to this role, he served as Associate Director of Pediatrics at Jacobi Medical Center and as a faculty member in the Division of General Pediatrics at Columbia-Presbyterian Medical Center.

On a national level, Dr. Racine has been active in the American Academy of Pediatrics (AAP), serving as Chairman of the Advocacy Committee and Vice President and President of Chapter 3, District II. He also serves on the National Committee on Child Health Financing of the AAP and has achieved national recognition for his work on the use of hospital data to measure the effects of policy changes on health outcomes. Dr. Racine has received numerous awards, including the Lewis M. Fraad Award for Excellence in Teaching and the Emily Fenichel Award for Leadership in the New York Zero to Three Field. He was inducted into the Leo M. Davidoff Society of Albert Einstein College of Medicine for excellence in teaching.

Dr. Racine completed his undergraduate education at Harvard and holds a combined doctorate in medicine and economics from New York University. He trained at Harvard’s Boston Children’s Hospital and went on to join the faculty of Columbia University College of Physicians and Surgeons.


Deirdre RosadoDeirdre A. Rosado, MPA
Director of Operations Teaching and Neighborhood Practices

In her role, Ms. Rosado provides administrative and financial oversight to MMG’s academic teaching and neighborhood sites. She is also responsible for Montefiore’s WIC Program, Adolescent Primary Care Initiative and an ambulatory HIV program.

Ms. Rosado has over 25 years of experience in healthcare. She began her career in healthcare as a receptionist in the Department of Urology at Montefiore in 1993, and was promoted to Medical Staff Secretary within one year. As her career progressed, she became an Office Manager in Private Practice and later a Practice Manager at NYU. She joined Columbia and Cornell’s bi-campus Division of Vascular Surgery as Divisional Administrator in 2007.

Ms. Rosado re-joined Montefiore in 2008 as Administrative Director of Medical Group’s Family Care Center. In this role, Ms. Rosado successfully worked with multiple stakeholders including residency program directors to redesign practice operations and improve efficiency, patient flow, and the patient experience.

Ms. Rosado holds a Bachelor of Arts from New York University where she achieved the Founders Day Award for academic excellence. She continued her education at New York University’s Wagner School for Public Service where she earned an MPA.


Maureen WarnerMaureen Warner, RN
Director of Operations - Group Practices

Maureen Warner joined Montefiore in 1995 as Manager for Health Promotion, responsible for the development of a nursing-led hypertension program for MMG. Four years later, she was promoted to Director of Clinical Services and Education, in charge of clinical services in the 22 primary care offices, 15 school-based health clinics and eight homeless shelters within the network.

In this position, she coordinated the development of the ambulatory nursing education curriculum to enhance support staff competency and improve the quality of care delivered, and she managed multiple successful Joint Commission accreditations.

In 2010, Warner was promoted to Director of Operations, responsible for fiscal, clinical and human resource management in 11 MMG non-teaching health centers and the development of three urgent care centers. Together with the management team, she is responsible for the implementation of the Patient-Centered Medical Home, a unique model of care providing comprehensive, proactive and team-based care to all MMG patients.

Warner holds a bachelor’s degree in organizational management and a master’s degree in healthcare management from Mercy College. She also has a background in emergency department, intensive care unit and medical/surgical nursing and more than 30 years of clinical and administrative experience in acute care and ambulatory care settings.


Sybil Hodgson, MD
Regional Medical Director – Neighborhood Practices

As Regional Medical Director for MMG’s Neighborhood practices, Dr. Hodgson is responsible for clinical oversight and quality at five community based practices.

Dr. Hodgson completed her residency training in the Department of Family and Social Medicine before joining Montefiore in 2009 as an attending physician at West Farms Family Practice. In 2011, Dr. Hodgson was appointed Medical Director at West Farms.

A graduate of New York Medical College, Dr. Hodgson was a National Health Service Corps scholarship recipient. She holds an academic appointment with the Albert Einstein College of Medicine and is also an active member of the American Academy of Family Physicians. Currently, Dr. Hodgson serves on the peer review committee for MMG.


Donald D. Raum, MDDonald D. Raum, MD
Regional Medical Director
- Group Practices

Donald D. Raum, MD, joined Montefiore in July 2000 as a primary care provider at Montefiore Medical Group's Bronx East site. He became a site Medical Director in 2002, and subsequently Regional Medical Director for 11 MMG sites. He currently serves on numerous operations and quality committees, and is responsible for the delivery of care by physicians at these sites in the Bronx and nearby Westchester County. Dr. Raum is also Assistant Professor of Medicine at Albert Einstein School of Medicine.

Dr. Raum graduated from medical school at University of California, Los Angeles, where he was also an intern in internal medicine. He was a fellow in medicine at New York HospitalCornell Medical Center; a fellow in rheumatology and immunology at the Robert Breck Brigham Hospital, Harvard Medical School; and a fellow in hematology at the Peter Bent Brigham Hospital, Harvard Medical School.

Prior to joining Montefiore, Dr. Raum served as Assistant in Medicine, Instructor, and Assistant Professor of Medicine at Harvard Medical School, the Peter Bent Brigham Hospital and Beth Israel, Boston. His research interests at the Center for Blood Research in those years were in immunology, complement proteins, genetics, histocompatibility typing and diabetes.


Michael BrandsdorferMichael Brandsdorfer
Director of Finance

Michael Brandsdorfer is Director of Finance for Montefiore Medical Group, overseeing the financial reporting and management of its more than 20 outpatient sites and over 800,000 annual visits.

Prior to joining Montefiore in 2012, he spent five years as the Finance Director of a Federally Qualified Health Center in Brooklyn and six years as a member of the HealthCare Group at RSM McGladrey/Goldstein Golub Kessler, LLP.

Mr. Brandsdorfer received his BS in accounting from the Sy Syms School of Business at Yeshiva University in 2001 and has been a Certified Public Accountant since 2003. In 2009, he received the Jeffrey T. Latman Award for excellence in fiscal management from the Community Health Care Association of New York State.


Rahil Briggs, PsyDRahil Briggs, PsyD
Director of Pediatric Behavioral Health Services

Rahil Briggs, PsyD, joined us in 2005 as Director and founder of the Healthy Steps Program at Montefiore, a program that has expanded to multiple MMG sites to help to ensure that parents and their babies get started on the right track. Three years later, in 2008, Dr. Briggs was appointed Assistant Professor of Pediatrics, Albert Einstein College of Medicine. In 2013, she was named Director of Pediatric Behavioral Health Services and tasked with spearheading the formation of the most comprehensive integrated behavioral health system in the nation, developing innovative behavioral health programs for our pediatric and adolescent population while continuing to expand Healthy Steps to other sites.

Dr. Briggs's work concentrates on bringing together mental health specialists with primary care pediatrics, to focus on prevention, early childhood mental health and development, and parent-child relationships.

A Duke University graduate, Dr. Briggs completed her doctoral work at New York University. She has published numerous manuscripts in peer-reviewed journals, as well as book chapters, and she is widely quoted in popular publications.


Lisa StumpoLisa Stumpo
Director of Finance - Reimbursement and Data Analysis

Lisa Stumpo serves as Chief Revenue and Reimbursement Officer of Montefiore Medical Group and Montefiore Wakefield Ambulatory Care Center.

Stumpo is responsible for the oversight, reporting and analysis of all MMG reimbursement activities, including revenue cycle, business planning and physician compensation.

She has over 20 years of experience with various healthcare institutions with a focus on revenue cycle, coding and compliance, billing, collections and accounts receivable management and data analysis and reporting activities.

Her career began at Memorial Sloan-Kettering Cancer Center in 1991, where she worked in Clinical and Anatomic Pathology and the Physician Billing Department. She joined Montefiore in 1997 with progression as Billing Supervisor, Trainer and Manager of Physician Compensation. Her career moved forward as she joined the Weill Cornell Physician Organization in 2000, where she was Professional Billing Administrator followed by Assistant Director of Billing Operations. She re-joined Montefiore in June 2006 as Director of Revenue Cycle Initiatives.

Stumpo attended Syracuse University's College of Arts and Sciences and New York University's Wagner Graduate School of Public Service.


Maureen VachnaMaureen Vachna, RN, MSN
Director of Nursing

Maureen Vachna, RN, has served as Director of Nursing for Montefiore Medical Group since May 2012. She has over 30 years of nursing leadership experience. Prior to joining MMG, she was the Nursing Site Director of Medical Patient Care Centers & Services at the Wakefield Campus. In her current role, Ms. Vachna is responsible for the nursing clinical oversight of the Patient-Centered Medical Home and provides technical, educational and consultative support to all nursing staff.

Ms. Vachna received her BSN from Mercy College and her MSN in nursing administration from the College of New Rochelle. She also has certification as a Nurse Executive and Pediatric Nurse through the American Nurses Credentialing Center.