Welcome to the Division of General Internal Medicine and Geriatrics at Stony Brook Medicine, Suffolk County’s premier academic health system. Our physicians and advanced practice providers are dedicated to delivering exceptional, compassionate care across the adult lifespan.
Our Mission:
We aim to provide outstanding patient-centered and evidence-based medical care, advance discovery and innovation through research, educate future healthcare leaders, and improve the health and well-being of adults and older adults in our community.
Our Vision:
We strive to be leaders in comprehensive adult and older adult care, recognized for clinical excellence, collaborative practice, education, research, and our commitment to helping every patient achieve their unique health goals.
Who We Are:
Internal medicine physicians are "complexivists;" experts in care complexity—integrating and managing the dynamic, interacting biological, psychological, social, and health-system factors that make a patient's care difficult, rather than treating any single organ or disease in isolation. We combine scientific expertise with a deep commitment to understanding each patient as a whole person, partnering with individuals and families to promote health, navigate illness, and achieve the best possible quality of life. Our care is comprehensive and longitudinal, ranging from preventive care and wellness to management of multiple chronic conditions and serious illness, allowing us to build lasting relationships with our patients.
Our training equips us to see the "big picture," integrating information across organ systems, diagnoses, treatments, and life circumstances to develop personalized care plans tailored to each patient's goals and needs through every stage of adulthood. We care for patients in a wide variety of health settings including the outpatient office, local assisted living facilities, teaching nursing homes, and patients’ private homes.
Internal Medicine physicians are known as “the doctor’s doctor;” our expertise is often sought by colleagues across disciplines because of our ability to connect the dots, solve complex clinical problems, and coordinate care for the whole person.
Our care would not be complete without our interprofessional team members who help form the foundation of caring for our patients and include our clerical staff, nursing staff, care coordinators, social workers, and other allied health staff.
Our geriatricians extend this philosophy with a specialized focus on healthy aging and person-centered care for older individuals, championing interprofessional teamwork, honoring personal goals and preferences, and addressing the unique medical, functional, social, and emotional needs that accompany aging. We believe that exceptional care begins with listening and treating every older adult with dignity, respect, and compassion.
Our division has three outpatient clinical locations: Stony Brook Primary Care in East Setauket, Advanced Specialty Care at Lake Grove, and Advanced Specialty Care at Commack. As a nationally recognized NCQA Patient-Centered Medical Home, we deliver high-quality primary care using a team-based approach with physicians leading a team comprised of advanced practice providers, nurses, care managers, pharmacists, and other healthcare professionals to provide coordinated, comprehensive, and patient-centered care. This academic mission enriches every aspect of our work and strengthens our commitment to improving the health of the communities we serve. In addition, we have an innovative “Enhanced Geriatric Care Program” which provides care coordination to our most complex patients aiming to reduce hospitalizations, help navigate the complexities of the healthcare system, and keep patients at home.
Beyond the clinical setting, our division is committed to advancing medicine through education, research, innovation, and leadership. We strive to prepare the next generation of physicians, improve healthcare delivery, and serve our communities through scholarship and advocacy.
Many members of our division hold leadership roles within the Department of Medicine and through the Renaissance School of Medicine. They are also very active in many professional organizations, such as the American College of Physicians (both nationally and at the local NYACP chapter), American Geriatrics Society (both nationally and at the local MAGS chapter), Society of General Internal Medicine, and Alliance of Academic Internal Medicine.
Our division teaches medical students, Internal Medicine Residents, Geriatric Medicine Fellows, and learners in Stony Brook’s other health professional schools (including nurse practitioner and physician assistant students). We host a well-established ACGME accredited 1-year Geriatric Medicine Fellowship in addition to the 2-year innovative “Geriatric Medicine Fellowship/Hospitalist track” whereby physicians spend half of their time as a geriatric fellow and the other half as a hospitalist attending with emphasis on additional leadership training.
Together, we are advancing a vision of healthcare that is comprehensive, collaborative, and works to improve the lives of adults and older adults today and for generations to come.
I encourage you to learn more about our Division on this site as well as Stony Brook Medicine as a whole!

Kimberly A. Kranz, MD, FACP
Interim Chief, Division of General and Geriatric Medicine