MEET THE TEAM
Nicolas Chronos, MD, FACC, FESC
Dr. Nicolas Chronos is managing partner of Lake Country Medical Group. He is an interventional cardiologist and internist who is internationally recognized for his pioneering heart disease research. Dr. Chronos has over 30 years of medical experience. In addition to his internal medicine expertise, Dr. Chronos specializes in general cardiology, coronary artery disease management and heart failure management. He treasures his patients and dedicates himself to their complete wellness.
Peter Chapman, MD, FACC
Dr. Peter Chapman is a cardiology and electrophysiology specialist with over 40 years of medical experience. An expert in detecting and treating abnormal heart rhythms, Dr. Chapman assesses patients’ need for curative ablation, defibrillators and pacemakers. He also helps patients manage and maintain their existing cardiac devices. Dr. Chapman is devoted to facilitating a healthy heart rhythm for all his patients.
Kenneth Sternberg, DO, FACC
Dr. Sternberg is a board-certified internist, cardiologist, and interventional cardiologist who has an extensive interest, education and clinical expertise in all aspects of venous disease. He brings with him over 20 years treating venous disease including venous reflux and chronic venous insufficiency. Dr. Sternberg has set up a vein clinic at Lake Country Medical Group where he performs minimally invasive procedures including sclerotherapy, radiofrequency ablation, adhesive closure and foam ablation inorder to treat venous disease.
Eric Silver, MD
Dr. Eric Silver is a women’s health care specialist with over 40 years of medical experience. He specializes in all aspects of women’s health care, including menopause, sexual dysfunction, and gynecologic procedures. He provides women a supportive and friendly atmosphere for their health care needs throughout their lives. His passion is in being a partner to, and advocate for, his patients in all aspects of their overall health care.
Diane Peterman, MD
Dr. Peterman brings with her over 25 years of experience in emergency medicine and urgent care. Dr. Peterman completed medical school at New York Medical College and her emergency medicine residency at North Shore University Hospital. As an experienced urgent care physician, she is an expert in diagnosing and treating a wide range of illnesses and injuries that require immediate attention. She is highly trained to assess patients’ symptoms, order and interpret diagnostic tests, and provide treatment.
Luis A. Pagan-Carlo, MD, FACC
Dr. Luis A. Pagan-Carlo is a board-certified cardiologist with over 25 years of medical experience. Based at the Minneapolis Heart Institute at Abbot Northwestern Hospital in Minnesota, he provides virtual cardiology care to Lake Country Medical Group patients. Dr. Pagan-Carlo is committed to providing world-class care that promotes a healthier life.
Jessica Heiring, MD
Dr. Jessica Heiring is coming to Lake Country Medical Group from Minneapolis, Minnesota. She is married, has three children and has been coming to the Lake Oconee area for over twenty five years to visit her in-laws. She is excited to be at Lake Oconee where she lives for the majority of the year and looks forward to becoming more involved in the local community and enjoying all that it has to offer.
Dr. Heiring trained at the University of Minnesota where she did her medical training and residency. She completed a Neuromuscular and EMG fellowship following her residency. She then joined the Minneapolis Clinic of Neurology, one of the largest private practice neurology groups in the United States of America, and was in clinical practice there for over 25 years. She has been on the board of directors of the Minneapolis Clinic of Neurology, lectured nationally and conducted over 20 clinical research trials.
Kimberly Warnock, NP-C
Kim is a Family Nurse Practitioner who brings over nine years of experience providing exceptional care for both acute and chronic illnesses. After years of working in the Emergency Department, Kim has seen the true value of comprehensive preventative medicine, diabetes care, and management of chronic illness and it has become her passion. Kim is a highly valued addition to our team.
Kim graduated with her Bachelor’s degree from Georgia College and State University in 2009. She then practiced as a registered nurse in inpatient cardiology and Emergency Medicine. Kim became a Nurse Practitioner in 2013, graduating with a Master of Science in Nursing from Medical College of Georgia. Kim is board certified by the American Association of Nurse Practitioners.
For the past nine years Kim has practiced Emergency Medicine in multiple Emergency Departments in the area, treating patients of all ages, complaints, and acuities. This experience makes Kim exceptionally well rounded and capable of providing our patients with the absolute best healthcare. Kim and her husband have lived in the Lake Oconee area since 2009 and have three wonderful children. She enjoys time on the lake and traveling. She looks forward to taking care of patients and building relationships in the community she lives in.
Amy Hayes, AGNP-C
Amy is an Adult/Gerontology Nurse Practitioner, graduating from the University of Alabama at Birmingham with a MSN degree in Adult -Gerontology. She now provides exceptional care in Adult & Geriatric Primary Care. After 17 years of working as a Registered Nurse in Home Health, ICU, and in the Medical/Surgical care setting she has found her passion in providing comprehensive preventative medicine and the management of Memory Loss. We are so excited to have added Amy to our team as a Leader in the field of Geriatric Medicine and she will be a great asset to our community!
Amy graduated with her Bachelor’s of Science in Nursing from Brenau University in 2006. Shortly thereafter she moved to the Lake Oconee community and has worked as a registered nurse in Home Health, Intensive Care, and Medical Surgical specialties. Amy became a Nurse Practitioner in 2023, graduating with a Master of Science in Nursing from The University of Alabama at Birmingham.
Amy was the founding Director of Clinical Services at The Glen, where she led the clinical team and established a culture of Clinical Excellence. After receiving her Nurse Practitioner degree she joined the Lake Country Medical Group to head up the Senior Care group. She has developed a loyal patient base and is an excellent member of our clinical team. She will be working with our Neurologist, Dr Jessica Heiring, to establish the Lake’s only Memory Loss Clinic. Dr. Nicolas Chronos is truly delighted that Amy has joined our growing team at the Lake Country Medical Group.
Amy has lived at Lake Oconee since 2007 and is enjoying life here with her five year old daughter and their family dog. When she isn’t taking fantastic care of her patients she enjoys spending time with family and friends, shopping, and good food!
Michelle Lamm, AGNP
Michelle Lamm is an Adult-Gerontological Nurse Practitioner specializing in
Cardiology. She completed her Bachelor’s in Nursing at Indiana University in 2008, and her Masters in Nursing with cardiovascular concentration at Duke University in 2015.
She joined Lake Country Medical Group in 2018 when she joined Drs Chronos and Chapman to grow the Cardiology Group. Michelle is an excellent clinician and has brought great expertise and extensive knowledge in Cardiology to the Lake Country Community. She specializes in the diagnosis and treatment of all Adult Cardiovascular disease and has a major focus on prevention of heart disease. She was central to the establishment of the Dean Ornish Cardiovascular Disease reversal program at the lake with Dr. Chronos in 2019-2021.
Michelle has been central to Cardiovascular disease prevention education efforts in our community. She is passionate about health education and women’s heart disease.
She lives in Greensboro with her husband and three children. In her free time she enjoys traveling and cheering on her children in their activities.
Dr Chronos believes that the clinical partnership of the Cardiologist with the
Cardiovascular trained Nurse Practitioner provides an excellent team of health care providers working to improve the Heart and Vascular health in our community.
Jessica Coleman, FNP-C
Jessica is a Family Nurse Practitioner who brings over five years of experience providing care for both acute and chronic illnesses to all patients. Jessica has experience in both the hospital and outpatient setting and has specialized in primary care and women’s health services. She has managed both acute and chronic conditions in these settings. As a Family Nurse Practitioner, she has treated children and young adults as well as patients in their Senior years. She works with all the providers and will focus with Dr Diane Peterman on both General and Acute Medical care for our community. She will also extend our Gynecology practice here at the lake working alongside Dr Eric Silver.
Jessica graduated with her Bachelor’s degree from Middle Georgia State University in 2014. She then practiced as a registered nurse in inpatient orthopedics and medical surgical nursing. Jessica became a nurse practitioner in 2018, graduating with a Masters of Science in Nursing from the University of North Georgia. Jessica is board certified by the American Association of Nurse Practitioners.
For the past five years, Jessica has practiced family medicine and has treated patients through primary care services and women’s health services. She is an expert in women’s health and provides all aspects of women’s health to all ages.
Jessica is a native of this area and has lived here all of her life. She and her husband live in the area and enjoy traveling and time with their family.
Dr. Chronos is truly excited that Jessica brings significant increased breadth to our family medicine group, and she has significant expertise that can grow our women’s health initiative.
Christy VanCleve, CMA
Christy is a Certified Medical Assistant with over 10 years in the medical field. She is a native of Eatonton and Lake Oconee. She joined LCMG in 2017 to help establish the Care Management Team and the Medicare Chronic Care Management Program. She leads our Referral team and acts as our facility’s management manager. She works closely with the senior management of Lake Country Medical Group, and acts as a liaison between the clinic and its patients.
When Christy is not helping the clinic run smoothly, she enjoys spending time with her family and friends. She has 2 daughters, Abbiegail, whom is 23 and works as a dental assistant in Eatonton, and Paisley, a second grader at Gatewood Schools. She loves football, GO DAWGS, concerts, and anything True Crime.
RJ Brooks, Vice President of Operations
RJ Brooks directs the day-to-day functions of Lake Country Medical Group. RJ coordinates with our care team to provide all our patients with a smooth, hassle-free experience. RJ has over 10 years of experience in durable medical equipment. His passion is facilitating an environment where patients can enjoy excellent health care with convenience and comfort.
Grace Greenwald, RN, Clinical Director
Grace is a Lake Oconee local who draws from her clinical experience as an Emergency Nurse to bring a dynamic, patient-centered approach to our Clinic. She strongly believes that time is your most valuable, yet limited resource. She helps to optimize our clinical flow to ensure our patients get the most out of their time spent with our trusted medical providers. Grace also trains our team in new clinical skills to ensure safety, comfort, and best practice for each of our valued patients.
Grace offers aesthetic services through her business, Refine with Grace, at our clinic. With eight years of dermatology and aesthetic experience, Grace has achieved advanced certification through her work at Dermani Medspa in Atlanta, The Injectable Academy, and the American Academy of Facial Esthetics. Refine with Grace partners with Kay Greeveson, APNP & owner of Regents Park Aesthetics in London, and Dr. Christopher Assandra based out of Beverly Hills to offer our community cutting edge aesthetic services with safe, expert level techniques, and the artist eye that Grace possesses. Grace offers thorough skin consultation, aesthetic injections, and a variety of treatment options to help you reach your safest, most natural results. Grace thoroughly educates her patients prior to treatment, takes her time during treatments to ensure each result is optimal and comfortable. She gives her fullest attention and availability to follow up care so patients are supported every step of the way on their aesthetic journey.
Alicia Ramfos, Director of Connected Care Institute
Alicia comes to LCMG with 20+ years of experience in geriatrics from home health to assisted living. She has been the Director of Connected Care Institute here at LCMG since September 2022. When Alicia is not making sure all of our patients are taken care of she is spending time with her daughter Olivia, 3 amazing grandchildren Francis, G, Joe, and her wonderful husband, Erik of 36 years. Alicia enjoys knitting, reading, running, and being in the outdoors.