About Us

Southern New Hampshire Health, includes:

  • Southern New Hampshire Medical Centera 188-bed acute care facility located in the heart of downtown Nashua, has a medical staff of over 500 primary and specialty care providers from Foundation Medical Partners, Dartmouth-Hitchcock Nashua, and local independent practices. 

  • Foundation Medical Partners, a multi-specialty provider group, including more than 300  providers in primary, specialty and immediate care serving thousands of patients in more than 70 practices across southern New Hampshire and northern Massachusetts.

  • Immediate Care, offering walk-in care 7 days a week at 4 locations.

We’re dedicated to improving your health and wellbeing with innovative programs and preventive health resources.

A Member of SolutionHealth
SolutionHealth is a regional healthcare organization that represents a combination of Southern New Hampshire Health and Elliot Health System. The founding vision of SolutionHealth is to provide highly-coordinated, community-based regional healthcare through collaborative planning to increase access, quality, value and community benefit for residents of southern NH. Learn more.

A Partner with Boston’s Top Teaching Hospital
We are Massachusetts General Hospital’s first clinical affiliate in the region. This affiliation gives you easy access to world-class treatment, with joint programs in stroke, cancer, trauma, vascular surgery and pediatric specialties.
Leaders in Care Delivery
Through Foundation Medical Partners, we’re redesigning primary care.  Patients in our primary care practices are part of a patient centered medical home (PCMH), a new model for care delivery. Team-based and tightly coordinated, medical homes can improve care at lower costs. Learn more about PCMH.


Our Mission and Vision


Southern New Hampshire Health is dedicated to providing exceptional care that improves the health and well-being of individuals and the communities we serve. 


Southern New Hampshire Health is a provider of choice, delivering convenient access to high value, quality care in an environment that embraces dignity, compassion and service to the people of our community.

Our Beliefs

A higher level of care means we believe in treating you the way we would like to be treated.
It starts with empathy — listening to how you feel and working to understand your needs.
It continues with respect — spending quality time to explain care and services in a way that everyone can understand.
Communication is important — we work as a team to keep everyone, including you and your family, informed about your care.
Relationships are built on trust — something that is yours to give, and ours to earn, in everything we do.
Our dedication to a higher level of care is more than words. It takes expertise, knowledge and commitment. We work every day to deliver the best possible care, tailored to your needs, with support and understanding.

Senior Leadership

Executive Team

Tom Wilhelmsen​, Interim President, Southern New Hampshire Health
Tom was the President and CEO of Southern NH Health for 28 years, retiring in 2016. Under his tenure, Southern NH Health grew from a small community hospital to an essential fully integrated health care delivery system, inclusive of Southern New Hampshire Medical Center and Foundation Medical Partners. He oversaw many campus renovations, service expansions and clinical partnerships, including the clinical affiliation agreement with Massachusetts General Hospital. We are happy to welcome Tom back to Southern NH Health to help continue to lay the groundwork for the future success of our organization as we continue our mission to care for our community as we have been doing for 128 years, continue to expand services to meet our community’s ever-evolving needs, and continue to chart our course together as a founding member of SolutionHealth. 

Mark Santos, President, Foundation Medical Partners 
Mr. Santos joined Foundation Medical Partners in 2007 and was promoted to Chief Operating Officer in 2012. In 2019, he assumed the additional role of Senior Vice President of Business Development for the Health System in addition to his duties for Foundation Medical Partners.  In 2020, he assumed the role of Chief Operating Office of Southern New Hampshire Health and in 2021, he was appointed President of Foundation Medical Partners.  His prior positions were with Harvard Pilgrim Health Care and Harvard Vanguard Medical Associates. Mr. Santos is a graduate of Massachusetts College of Pharmacy with a BS in Pharmacy and he completed an MBA at Rivier College.

Paul L. Trainor, Senior Vice President of Finance, Chief Financial Officer 
Paul joined the organization in 2007.  He has held various finance positions with Optima Health, Elliot Hospital, and Catholic Medical Center. He has a Bachelor of Science degree in accounting from Bentley College and a Master of Health Care Management from New England College. 

Senior Management Team

Rebecca Cooper-Piela, MS, APRN-BC, Vice President of Quality and Accreditation and Chief Quality Officer
Rebecca joined Foundation Medical Partners in 1995 as a primary care provider. She is a board-certified adult nurse practitioner. She became involved in medical leadership when she joined the Board of Governors, serving from 1997 to 2003 and again in 2007 through 2009.  Rebecca began her work with quality assurance when she joined the Foundation Quality Assurance Committee in 2005. In 2015 she took on the role of Medical Director for the Quality Assurance, Department of Foundation Medical Partners. In December of 2019 she was promoted to the role of Chief Quality Officer for Southern NH Health. In 2021 Rebecca was promoted to Vice President of Quality, Safety and Accreditation and Chief Quality Officer. She graduated from Boston College with a Bachelor’s of Science in Nursing in 1991 and Master’s in Nursing in 1994. Rebecca is also Certified in Health Care Quality Management by the American Board of Quality Assurance and Utilization Review Physicians.

Michael J DeLeo, MD, Chief Medical Officer, Foundation Medical Partners 
Dr. DeLeo is a board-certified diagnostic radiologist with subspecialty fellowship training in Breast and Oncologic Imaging.  He received his Bachelor of Arts from Middlebury College and his MD as a member of the Alpha Omega Alpha Honor Medical Society from the University of Massachusetts Medical School.  Following his internship in Internal Medicine at Massachusetts General Hospital, Dr. DeLeo completed his residency in Diagnostic Radiology and fellowship in Breast and Oncologic Imaging at the University of Pennsylvania, where he served as Chief Resident and completed a residency track in Healthcare Leadership and Quality.  Since joining Southern NH Health in 2015, Dr. DeLeo has served on the Board of Governors of Foundation Medical Partners as the Radiology Division Chair and Medical Executive Committee of SNHMC as the Radiology Department Chair.  He is the Radiation Safety Officer for the health system and Medical Director for the diNicola Breast Health Center and the Southern NH Health Cancer Program.  Dr. DeLeo also serves as the Secretary/Treasurer of the New Hampshire state chapter of the American College of Radiology.  He is a Certified Physician Executive through the American Association for Physician Leadership and is completing his Master's in Business Administration with a focus in Medical Management at the Isenberg School of Management at the University of Massachusetts.

Joseph Leahy, DO, Associate Vice President of Emergency Medicine
Dr. Leahy joined Southern New Hampshire Medical Center in December 1997 as a staff emergency medicine physician and held several leadership positions prior to his appointment as Associate Vice President of Emergency Medicine.  He has served as the Chief of the Medical Staff and Penultimate Past President of the NH Osteopathic Association.  In addition to his administrative duties, Dr. Leahy continues to treat patients in the Emergency Department.  Dr. Leahy graduated from the University Of New England College Of Osteopathic Medicine in Biddeford, ME, and completed a residency in Emergency Medicine at Union Hospital in Union, NJ.

Timothy Scherer, MD, Vice President of Medical Affairs and Chief Medical Officer for Southern New Hampshire Health
Dr. Scherer, a board-certified gastroenterologist, joined Southern NH Health in 2018 as the Chief Medical Officer.  He received his Bachelor of Science from the State University of New York, Binghamton, and his MD from the State University of New York Health Science Center, Brooklyn.  He completed his internship and residency in Internal Medicine at Dartmouth-Hitchcock Medical Center in Lebanon, NH, and his fellowship in Gastroenterology at Lahey Clinic in Burlington, MA.  Dr. Scherer has served on Dartmouth-Hitchcock’s Board of Trustees and the Board of Directors of the Surgery Center of Greater Nashua.