USF Infectious Disease

Dr. Walgampaya is a board-certified internal medicine physician. After completing his undergraduate studies in biology and pre-medicine, Dr. Walgampaya received his medical degree from St. George's University School of Medicine in Grenada, West Indies. He completed his internal medicine residency program at Seton Hall University/St. Michael's Medical Center in Newark, NJ. Previously, Dr. Walgampaya served as a medical director, chief medical officer and coroner, worked in an emergency room, and practiced both traditional and outpatient internal medicine. In his spare time, he enjoys volunteering, reading, traveling, gardening, cycling and running. Treats patients 18 years of age and older.

Dr. Jeffrey Lester graduated from the University of South Florida with a bachelor degree in finance in 1996. He returned to USF in 1997 to earn a degree in chemistry, completed in 2004. Dr. Lester attended Ross University School of Medicine and graduated with a doctor of medicine degree in June 2004. In July 2004 he started his internal medicine residency at the University of Oklahoma in Tulsa and became board certified in internal medicine in 2007. He completed his training in medical genetics at the University of Miami in 2009. In November 2009 Dr. Lester moved to Maryland and worked for Family Health Centers of Baltimore, a small community health center serving with the National Health Service Corps for three years treating low income, indigent patients in internal medicine. In September 2013 Dr. Lester joined the Tampa General Medical Group to open the Sun City Center location. He is a general internist and sees patients 18 years of age and older.

Dr. Lester treats patients 18 years of age and older.
Dr. Lester is recognized by the NCQA Diabetes Recognition Program.

Dr. Atreyi Chakrabarti is a board-certified family medicine physician. She attended medical school at Netaji Subhash Chandra Bose Medical College in Jabalpur, India. After earning her medical degree, Dr. Chakrabarti completed her residency trainings in internal medicine and family medicine at the North Wales University Hospital in Wales, U.K., and Rotherham Hospital NHS Trust, U.K. She worked as a general practitioner in Rotherham and Stoke on Trent for two years before moving to the United States. During her time in Massachusetts, she was also appointed as an assistant professor in the Department of Family Medicine at the University of Massachusetts Medical School. Dr. Chakrabarti is a member of the American Association of Family Practice and the Massachusetts Medical Society. Dr. Chakrabarti speaks English, Hindi, Bengali, Urdu and Punjabi. Dr. Chakrabarti sees patients of all ages.

Esmeralda Young is a nurse practitioner certified by the American Academy of Nurse Practitioners. She graduated from St. Petersburg College with a degree in nursing and received her master of science degree in nursing from South University.

Prior to joining Tampa General Medical Group, Esmeralda worked in Tampa General's Medical and Surgical Oncology Unit providing acute nursing care to medical, surgical and oncology patients. Most recently, she practiced with the Community Health Centers of Pinellas in St. Petersburg, FL, providing primary care services and working to maintain continuity of care for patients by establishing diagnosis and treatment of common acute and chronic illness with health promotion and disease prevention.

Esmeralda is a member of the Florida Nurse Practitioner Network, Tampa Bay Advanced Practice Nurses Council, West Coast Council of Advanced Nursing Practices and the American Association of Nurse Practitioners.

Esmeralda treats patients 18 years of age and older.

Dr. Lohrbach is a board-certified family medicine physician. She completed her undergraduate studies and medical degree at the University of Iowa and went on to complete a residency in family practice at Barberton Citizens Hospital in Barberton, OH.

Prior to transitioning to the outpatient family care setting, Dr. Lohrbach's experience includes missionary work at a 100-bed hospital in Zambia where she cared for a wide range of acute and chronic patients. She also worked as an emergency medicine physician in Ohio and most recently practiced at Petersburg Healthcare Alliance in Petersburg, VA.

Dr. Lohrbach is a member of the American Academy of Family Physicians.

Outside of the office, she enjoys spending time with family, traveling and running.

Dr. Lohrbach treats patients 18 years and older.

Dr. Akif Ahmad is a board-certified family medicine physician who has practiced in his medical specialty since 2009. Fluent in English, Hindu and Urdu, Dr. Ahmad earned his medical degree from Dow University of Health Sciences in Pakistan, where he began his medical career after graduating in 2003. He went on to complete his family medicine residency at Drexel University in Philadelphia.

Dr. Ahmad has provided comprehensive family medicine care to the Tampa Bay area community since 2015. Before joining Tampa General Medical Group, he treated patients at Evara Health (formerly known as Community Health Centers of Pinellas) in St. Petersburg. Meanwhile, he served as a clinical assistant professor and clinical preceptor for medical students at Nova Southeastern University. Dr. Ahmad was also a clinical preceptor for medical students at the University of Kentucky and the University of Louisville after moving to the United States from Pakistan to begin his family medicine career.

Dr. Farrales is a medical graduate of Manila Central University in the Philipines and completed his family practice residency at Howard University Hospital in Washington, D.C. He relocated to Florida after his residency and for over 15 years worked as a hospital-employed physician and a private practitioner in Ocala and Williston prior to joining the Tampa General Medical Group in January of 2013. His experience includes comprehensive, robust family care practice delivery in rural health clinic settings and excellent treatment of patients from all groups and diverse backgrounds. Dr. Farrales is board certified by the American Board of Family Practice and is a member in good standing of the American Academy of Family Physicians.

Dr. Farrales treats patients of all ages.
Dr. Farrales is recognized by the NCQA Diabetes Recognition Program.

Dr. Chain is a board-certified family medicine physician. After graduating from Laurentian University in Ontario, Canada, Dr. Chain attended medical school at St. Matthew's University in Grand Cayman, Cayman Islands. He completed both family medicine and primary care sports medicine residency programs at the University of Connecticut/Saint Francis Hospital and Medical Center, where he served as chief resident.

Dr. Chain is a member of the American Academy of Family Physicians (AAFP), American Medical Society for Sports Medicine (AMSSM) and Connecticut Academy of Family Physicians (CAFP). Previously, he volunteered as a member of the medical professional team for the Boston Marathon and as an assistant coach for the North Bay Down Syndrome Society Special Olympic athletes. Dr. Chain is fluent in both English and French.

Dr. Chain treats patients of all ages.
Dr. Chain is recognized by the NCQA Diabetes Recognition Program.