Mount Vernon Internal Medicine is made up of a team of professionals dedicated to providing the best quality healthcare in a responsive and caring environment. Our providers all have years of experience in the healthcare industry. They work in concert with nurses and office staff who try to understand your health issues quickly and apply the right treatment to get you back to your optimal health.
Albert Herrera, M.D.-President (Lorton)
Dr. Herrera joined Mount Vernon Internal Medicine in 1989. He served as its Vice President from 1993-2008 and as President since. He currently practices at our Lorton location. Dr. Herrera began his studies at Yale University- St. Vincent's Medical Center and completed at Franklin Square Hospital Center in Baltimore, Maryland. He is Board Certified in Internal Medicine and has been active in the medical community. He currently served on the Board of Directors of the Virginia Society of Medicine, the Doctors Health Medical Group and the Medtrust Medical Group. He has served as the Chairman of the Department of Medicine at Mt. Vernon Hospital and served on numerous other committees. Dr. Herrera is currently Medical Director of Manor Care Nursing Center located in Alexandria. He is fluent in Spanish and is married with two daughters. He enjoys reading, weight lifting and traveling with his family.
Stephanie Carter, M.D.- Vice President (Alexandria)
Dr. Carter joined Mount Vernon Internal Medicine in 1999, serving as the Vice President since 2008. She received her Doctorate from The University of Colorado, School of Medicine. She served a tour in the Army, completing her Internal Medicine Internship at Eisenhower Army Medical Center, Fort Gordon (Augusta), Georgia. She went on to serve at duty stations in Camp Humphrey, Korea and Fort McPherson, Georgia. After completing her military commitment, she finished her residency at the Atlanta Medical Center in Atlanta, Georgia, where she also served as a Chief Resident. After her residency, she returned to the Washington area and worked briefly with George Washington University before joining Mount Vernon Internal Medicine. She is the Medical Director at Belvoir Woods Healthcare Center where she cares for patients in the nursing and assisted living facilities. Her special interests are geriatrics and the management of chronic health care issues. Outside of the office, she enjoys traveling, music and providing charitable care to homeless cats.
Dr. Tylenda joined Mt. Vernon Internal Medicine in 2001. Dr. Tylenda received her Medical Degree from Georgetown University and completed her internship and residency at the Washington VA Medical Center. In the past, she has served as the Primary Care Physician for multiple health departments, including those in Alabama and Arlington, VA. She is the Medical Director at The Mount Vernon Nursing Center where she provides care to patient in the nursing and long term care facilities. Outside of the office, she enjoys canoeing, hiking with her dog Ernie and visiting her family cabin in PA.
Gary Davidson, M.D.
Dr. Davidson joined Mount Vernon Internal Medicine in 2011. He is Board Certified in Family Medicine. Dr. Davidson received his Doctorate from the Autonomous University of Guerrero and completed his residency at Conemaugh Memorial Medical Center in Johnstown, PA. Dr. Davidson ran his own solo private practice, Davidsville Family Practice in Hollsopple, PA for over 20 years. He was the Medical Director at Select Specialty Hospital of Johnstown, PA. Prior to joining Mount Vernon Internal Medicine, Dr. Davidson practiced at Quantico's Naval Health Clinic. He is a member of the American Academy of Family Physicians. Dr. Davidson is fluent in Spanish, French and Japanese. Dr. Davidson's special interests include managing chronic health issues and preventative medicine. Outside of the office, he enjoys traveling to visit family in Jonestown, PA.
Luiz Malini, M.D.
Dr. Malini joined Mount Vernon Internal Medicine in 2012. He is board certified in Internal Medicine. He received his medical doctorate from Escola de Medicina Da Santa Casa da Misericordia in Brazil. He completed his Internal Medicine Residency training at Roger Williams Hospital-Boston University affiliated in Rhode Island. Prior to joining MVIM, Dr. Malini was a hospitalist at Medstar Saint Mary's Hospital in Southern Maryland. In his free time Dr. Malini enjoys spending time with his family. He also likes exercising, playing sports and traveling
Lauren Jost, R.N. , C.N.P.
Ms. Jost joined Mount Vernon Internal Medicine in 2008. She is a Board Certified Adult Nurse Practioner. Her undergraduate study was conducted at York College in Pennsylvania and she received her Master's Degree from The George Mason University/George Washington Univeristy Collaborative Nurse Practioner Program. Prior to joining Mount Vernon Internal Medicine, she spent 9 years as a Cardiac Nurse at Inova Fairfax Hospital and The University Medical Center in Hackensack, New Jersey. Her special interest include geriatric and well woman care. Outside of the office, she enjoys visiting her family, traveling and shopping.
Robin Korin, R.N., C.N.P.
Ms. Korin joined Mount Vernon Internal Medicine in 2015. She is a Board Certified Adult-Geriatric Primary Care Nurse Practitioner. Her undergraduate study was conducted at West Virginia University and she received her Master's Degree from George Mason University. Before joining Mount Vernon Internal Medicine, she spent three years as an Intensive Care Unit Nurse at Virginia Hospital Center and two years as an Intermediate Care Nurse at MedStar Georgetown University Hospital. Outside of the office, she enjoys traveling, cooking, and football.
Jonathan Siddon, D.O.
Dr. Siddon joined Mount Vernon Internal Medicine in 2014. Dr. Siddon received his Doctorate at the Virginia College of Osteopathic Medicine in Blacksburg, VA. He completed his internship and residency at Pinnacle Health Systems in Harrisburg, PA. Dr. Siddon has a special interest in preventative medicine and the management of chronic illness. Outside of the office, he enjoys golf and lacrosse. He is an avid Virginia Tech Hokies and Washington Redskins fan.
Laura Nieves, M.D.
Dr. Nieves joined Mount Vernon Internal Medicine in 2015. She currently practices at the Alexandria location. Dr. Nieves was born in Puerto Rico and completed her undergraduate education at the University of Michigan. She returned to Puerto Rico for medical training before completing three years of Internal Medicine residency at the University of Connecticut School of Medicine. She previously served as Assistant Professor of Medicine at University of Connecticut. She is fluent in Spanish and English. Outside of the office she enjoys traveling, interior design, and spending time with her husband..
Brenda Rolander, R.N. , C.N.P.
Ms. Rolander joined Mount Vernon Internal Medicine in 2006. She is a Board Certified Family Nurse Practioner. Ms. Rolander received her Master's Degree from the George Mason University/George Washington University Collaborative Nurse Practioner Program. Prior to joining Mount Vernon Internal Medicine, she spent 20 years at Inova Alexandria Hospital as a nurse in the Adult and Neonatal Critical Care Units. Outside of the office, she enjoys spending time with her husband and three children, exercising and cooking.
Patrisha Mimna, R.N. , F.N.P.
Ms. Mimna joined Mount Vernon Internal Medicine in 2014. She attended Old Dominion University for both undergraduate and graduate studies. She is a certified Family Nurse Practitioner. Her background as a registered nurse is in intensive care/progressive care. She has a passion for preventative care. Outside of the office she enjoys reading, going to the gym, and traveling.
Raymond Murow, M.D.
Dr. Murow joined Mount Vernon Internal Medicine in 2009 through a merger with Internal Medicine Associates of Northern Virginia. Dr. Murow received his Doctorate from Georgetown Medical School, completed his residency in Dermatology at the University of Pennsylvania Hospital and his residency in Internal Medicine at Georgetown Hospital. Dr. Murow currently practices Internal Medicine with a sub-specialty in Dermatology. Dr. Murow served in the United States Army Medical Corps as a Major and was stationed at Fort Meade in Maryland. Outside of the office, he enjoys collecting records, classical music and spending time with his wife and two spoiled cats.
Dr. Sonya Bethel
Dr. Sonya Bethel has been involved in the practice of primary care medicine for the past thirty two years. A native of Miami, Florida, she received her M.D. degree from the University of Florida College of Medicine, then completed internship and residency in Family Medicine from St. Vincent’s Medical Center, Jacksonville, Florida. She has practiced in the Greater Washington area since 1987, gaining experience in multiple primary care settings. Dr. Bethel has an interest in Geriatric Medicine. Striving to improve the management quality of long-term care facilities, she has received Medical Director certification from the American Medical Directors Association. Dr. Bethel enjoys traveling and spending time with her husband Rick when away from the office.
Merica Shrestha, M.D.
Dr. Shrestha joined Mount Vernon Internal Medicine in 2016. She is board certified in Endocrinology and Internal Medicine. Dr. Shrestha received her Doctorate at the University of Missouri in Kansas City. She served in the United States Army, completing her residency and fellowship at Walter Reed National Military Medical Center. She recently completed her military commitment as Assistant Chief of Endocrinology at Dwight D. Eisenhower Army Medical Center in Ft. Gordon, Georgia. Dr. Shrestha sees a wide spectrum of endocrine disease, to include diabetes, thyroid disorders, bone disorders, and other gland/hormone disorders. She is also proficient in fine-needle aspiration biopsies of thyroid nodules. Outside of the office, she enjoys spending time with her husband and two children.
Mount Vernon Internal Medicine prides itself on providing well rounded patient care. As one of the driving forces in the Medical Community, we are proud to offer hospital and nursing home based care, both of which are unheard of in the area. This provides our patients with uninterrupted care during the times when they are most vulnerable.
Virginia Elesho, M.D.
Dr. Elesho joined Mount Vernon Internal Medicine in 2005. She received her Doctorate at Ross University School of Medicine in Dominica and completed her residency at St. Michaels Medical Center in Newark, New Jersey. Prior to joining Mount Vernon Internal Medicine, Dr. Elesho practiced at the VA Medical Center in Salem, Va and George Washington University Hospital in Washington, DC. Outside of the hospital, Dr. Elesho enjoys spending time with her family.
Valerie Chrosniak, R.N. C.N.P.
Ms. Chrosniak joined Mount Vernon Internal Medicine in 2002. She is a Board Certified Adult Nurse Practioner. Ms. Chrosniak received her Master's from George Mason University. She has experience in Cardiovascular Surgery and Critical Care. Outside of the hospital, she enjoys spending time with her family.
Nursing Home Providers:
Simon Lwin, M.D.
Dr. Lwin joined Mount Vernon Internal Medicine in 2008. He is Board Certified in Internal Medicine. Dr. Lwin received his Doctorate from the Institute of Medicine in Yangon, Myanmar. He completed his residency at Woodhall Medicine and Mental Health Center in Brooklyn, New York. Dr. Lwin is fluent in Burmese. Prior to joining Mount Vernon Internal Medicine, Dr. Lwin was a hospitalist at the Catskill Regional Medical Center in Harris, New York. Outside of the hospital, Dr. Lwin enjoys spending time with his wife and children and reading.
Lubna Rashid, M.D.
Dr. Rashid joined Mount Vernon Internal Medicine in 2012. She completed her residency training at AnMed Health Medical Center in Anderson, South Carolina. Subsequently, she completed her fellowship in Hospital Medicine from Corpus Christi Medical Center in Corpus Christi, Texas. Dr. Rashid is fluent in Urdu and Punjabi. Prior to joining Mount Vernon Internal Medicine, Dr. Rashid was a Hospitalist with IPC Healthcare in Dallas, Texas. Outside the hospital, Dr. Rashid enjoys reading, traveling and spending time with her family.
Hoa Huynh, R.N. , C.N.P.
Ms. Huynh joined Mount Vernon Internal Medicine in 2014. She is a Board Certified Nurse Practioner. She received her Master's from the George Mason University/George Washington University Collaborative Nurse Practioner Program. She has a special interest in Geriatric population and provides care to our patients in several local nursing homes. Prior to joining Mount Vernon Internal Medicine, she worked as a surgical nurse. She speaks conversational Vietnamese. Outside of the office, she enjoys spending time with her friends and family, traveling and reading.
Christian LaVenia, R.N. C.N.P.
Mr. Lavenia joined Mount Vernon Internal Medicin in 2014. He is a Board Certified Adult Medicine Nurse Practioner. His undergraduate study was conducted at Marymount University and he completed his graduate studies at George Mason University. Outside of the office, he enjoys hiking with his wife, daughter and his dog.
Kathleen Mares, R.N. C.N.P.
Kathleen Mares joined Mount Vernon Internal Medicine’s Nursing Home team in April of 2017. Kathleen has been a registered nurse for 40 years. Kathleen received her Bachelor's degree in nursing from Marymount University in 1980, and obtained her Nurse Practitioner degree from George Mason and George Washington University collaborative programs in 1994. Kathleen is the past president and now a member of the Virginia Council of Nurse Practitioners. Kathleen’s hobbies include professional spectator sports, needlework, sewing and being with my family.