Corporate Leadership



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Raymond J Kostkowski has served as the Chairman of CoreLife Health Services since 2012. He is responsible for the oversight and strategic direction of the business and directly manages health system partnerships.

Prior to serving as Chairman, Mr. Kostkowski was President and Chief Executive Officer of Capital Trust Finance since 1999. His responsibilities include managing the Company’s growth and strategic banking partnerships as a leading commercial finance company to the business sector.

Earlier, Mr. Kostkowski served as President of Orion Holdings. His responsibilities included the negotiation, acquisition and integration of more than 200 companies serving in the healthcare, technology, distribution, and the retail sector. His extensive operating experience extends over 30 years with private and public companies.

Presently, Mr. Kostkowski serves as Chairman of Benfield Investments Corp., a leading commercial property investment and management company. He serves on the board of Capital Call and CoraCares, a children’s health non-profit.



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Sean P Kostkowski has served as President of CoreLife Health Services since 2012.

Based on a personal experience, Mr. Kostkowski founded CoreLife and created a new category within healthcare that did not previously exist. As President of CoreLife, Mr. Kostkowski serves as a hands-on executive with direct oversight of the expansion and the executive operating team of the business.

Prior to CoreLife, Mr. Kostkowski served as a compliance manager within the healthcare division of CTF Corporation.

Mr. Kostkowski serves as a board member of CoraCares and is actively involved in numerous child advocacy programs. He also serves on the board of Sixx Investments Corp.

Mr. Kostkowski is a graduate of the University of Delaware with a B.A. in History and was an Athletic Merit Scholar.


Executive Vice President, Chief Financial Officer

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Ryan Ebersole drives the organization and strategy of the company’s financial position with responsibility for finance, accounting, planning & analysis, and technology. He sets the strategic direction for the coordinated and consolidated revenue and cash management function, buoyed by an enterprise-wide data management and business intelligence function; participating in key decisions pertaining to strategic initiatives. 

Mr. Ebersole has contributed significantly to CoreLife since 2013, previously as Executive Vice President and Chief Operating Officer. His leadership helped the company grow from two practices and 10 employees in 2013 to 35 practices and more than 300 employees in 2021.

Prior to joining CoreLife, Mr. Ebersole served within JPMorgan Private Bank. His responsibilities included bank operations and asset management. He has more than 10 years of experience in various capacities including operations, finance, real estate, and consulting.

Mr. Ebersole also serves on the board of directors of CoraCares and

Mr. Ebersole is a graduate of the University of Delaware with a B.S. in Finance from the Alfred Lerner College of Business & Economics.


Executive Vice President, Chief Business Officer

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David DeLeonibus leads and drives CoreLife’s healthcare partnerships, business development operations and marketing efforts with a focus on the long-term growth and expansion of the organization. His ability to foster and maintain relationships has been key to the growing success of CoreLife. 

Serving as Executive Vice President since 2014, Mr. DeLeonibus was able to grow referral networks from 150 a year to over 25,000. In addition to establishing multiple health system partnerships, Mr. DeLeonibus was responsible for the development, integration and growth strategy for all health system and physician partnerships.  

Prior to joining CoreLife, Mr. DeLeonibus served as a Director of Customer Care with Autonation – America’s Largest Auto Retailer.

Presently, Mr. DeLeonibus serves on the board of Directors of CoraCares, a children’s health non-profit and is actively involved in community health initiatives.

Mr. DeLeonibus has a B.B.A in Business Management & Finance from College of Roanoke.


Chief Operating Officer

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Jay Somers serves as CoreLife’s Senior Vice President of Administration. He is responsible for overseeing all corporate and administrative functionality, as well as leading key strategic initiatives. In this role, Mr. Somers collaborates with executive and retional leadership to identify performance improvement opportunities and co-create targeted initiatives with cross-functional departments.

Mr. Somers served with distinction for over 12 years as an Officer in the United States Military where he held several specialties including “Healthcare Administration Officer” and “Healthcare Intelligence Officer.” Upon leaving the United States Military, he continued to lead in operation roles within the healthcare industry, notably at Davita Dialysis and later at Healogics, earning awards for operational distinction with both organizations.

Mr. Somers holds a Bachelor’s Degree in Public Health, a Master’s degree in Healthcare Administration from George Mason University, and a Master’s Degree in Business Administration from the University of Maryland.


Vice President of Sales & Healthcare Relations

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As the Vice President of Sales & Healthcare Relations for CoreLife Healthcare Mr. Drumheller provides leadership, direction and management for the company’s sales processes and teams. He is responsible for the overall growth, sales and performance of the company, providing direction and the alignment of objectives with the business strategy.

Prior to joining CoreLife Mr. Drumheller served as an Account Executive for Konica Minolta Healthcare. There he oversaw four different product categories and was responsible for driving new business in six separate states. Mr. Drumheller has a wide range of experience and expertise in the healthcare and financial markets. As an innovative and profit-driven sales and business development Leader, Mr. Drumheller has a proven ability to design effective sales strategies, build relationships, secure clients, and achieve strong results under challenging circumstances.

Mr. Drumheller holds a Bachelor of Science Degree in Business Administration and Finance from Greensboro College.

Medical Leadership

Cory Clayville

Vice President of Medical Exercise

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Cory Clayville serves as CoreLife’s Vice President of Medical Exercise. He is responsible for ensuring a quality patient experience as it relates to physical health and exercise care. Mr. Clayville collaborates and works closely with the other members of the Clinical Leadership Team to ensure safe and effective exercise practices throughout CoreLife.

Mr. Clayville has been in the medical exercise and rehabilitative industry for over 10 years, earning a Bachelor’s in Exercise Science as well as holding certifications in medical exercise, functional exercise, and personal training.

Patrick Dunn

Vice President of Dietetics

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Patrick Dunn, MPH, RD, LDN serves as the Vice President of Dietetics for CoreLife. In his capacity, Mr. Dunn oversees all aspects of nutrition services, quality assurance, clinical metrics, and key performance indicators across the organization for all Registered Dietitians. Mr. Dunn is responsible for the creation and coordination of nutrition-related initiatives and strategies throughout the company. Mr. Dunn develops and refines dietetic policies, procedures, and protocols while serving as a liaison between Corporate and Regional markets.

Mr. Dunn’s background is in maternal and pediatric nutrition. Prior to CoreLife, he served as a nutritionist and dietitian for the Maryland state WIC program where he served some of the largest communities and populations in Maryland. He has combined experience in the fields of clinical and community dietetics, public health policy and programs, as well as business.

Mr. Dunn earned his Master’s in Public Health from the University of Maryland and a Bachelor’s in Nutrition Science Cum Laude from Morgan State University. He is devoted to the dietetics profession and is invested in supporting and mentoring CoreLife dietitians to uphold the CoreLife mission, vision, and model. Patrick enjoys the opportunity to make a difference, inspire fellow dietitians to excel at what they have to offer, and to advocate for the value RDs bring to patients and the healthcare team.

Leah Mandley

Vice President of Behavioral Health

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Leah Mandley, LCSW-c is the Vice President for Behavioral Health Services for CoreLife.

Prior to joining CoreLife, Ms. Mandley spent more than 20 years working in the mental health and substance use treatment industry. For the past 10 years, she served in area director and program/clinical director roles. She has formal training in Situational Leadership and is an approved Clinical Supervisor with various licensing boards.

Her passion is supporting clinicians in their professional development, resulting in holistic patient care and overall patient wellness. Clinically, Ms. Mandley has a myriad of formal training in trauma informed care models and cognitive behavioral therapy. She believes that underneath a patient’s physical health issues are unacknowledged or untreated behavioral health conditions and/or traumatic experiences. With the support of the behavioral health team, patients will not only succeed at meeting their goals but will thrive.

Dr Pressly
Cressent Pressly M.D., M.P.H.

Medical Director, CoreLife Novant Health

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Dr. Pressly, MD, MPH is a board-certified family medicine physician in Winston-Salem, NC. Dr. Pressly earned her Bachelor of Science from University of Richmond, her Master in Public Health from the Medical College of Virginia and her doctorate in medicine from Wake Forest University School of Medicine. She completed her residency at Cone Health Residency Program in Greensboro, NC, before joining Novant Health Maplewood Family Medicine, where she has over 15 years of experience caring for patients of all ages. She also serves on the advisory board for the Community Health and Wellness Institute of Novant Health. Dr. Pressly’s focus is on promoting mental and physical wellness, women’s health, and providing patient-centered compassionate care.

As Medical Director, Dr. Pressly oversees the clinical operations of the practices, leads collaborative efforts within the medical community and raises awareness of the comprehensive program CoreLife Novant Health offers for the treatment of obesity and its related illnesses.

Denise Dennis-Coke
Denise Dennis-Coke,
M.D., M.P.H.

Medical Director, CoreLife Novant Health

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Dr. Denise Dennis-Coke, MD, MPH serves as the Medical Director for CoreLife Novant Health in North Carolina.

Dr. Dennis-Coke completed her Bachelor’s degree in Biology and Master of Public Health degree at the University at Albany in Albany, New York. She then completed medical school and residency training in Internal Medicine at the Jacob’s School of Medicine in Buffalo, NY.  She enjoys teaching and taught clinical medicine to medical students and residents for 2 years after training. She currently practices primary care medicine in Charlotte, NC. 

Dr. Dennis-Coke has always had an interest in chronic disease management and particularly how weight affects other chronic conditions. As a result, she pursued a subspecialty certification in the field of Obesity Medicine and became a Diplomate of the American Board of Obesity Medicine in 2020. She has since incorporated Obesity Medicine into her current clinical practice. She is passionate about helping her patients reduce their chronic disease burden and live their healthiest and most vibrant lives.

Regional Leadership


President CoreLife North Carolina

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Steve Garner serves as President of CoreLife North Carolina overseeing all operations, business activities, and expansion efforts in the North Carolina market.

Mr. Garner has an extensive leadership history in both the acute and ambulatory healthcare settings.  Prior to joining CoreLife, he worked for 15 years at Novant Health in a variety of roles within the orthopedic service line.  

Mr. Garner received his Bachelor’s of Science in Athletic Training from High Point University, and his Master’s of Healthcare Administration from Seton Hall University.


President of CoreLife Maryland

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Barbara serves as President of Corelife Maryland overseeing all operations, business activities, and expansion efforts in Maryland. Barbara brings over three decades of experience and leadership in the healthcare sector to our team here at CoreLife.

Her background spans across pharmaceutical sales, operations for home care and wound care centers across several metro-area hospitals, administrator of assisted living facilities, and sales/marketing director of long term care facilities. Barbara graduated from Salisbury University with a Bachelor’s degree in Business Administration.