USF Department of Surgery

Edlyn Brown, MSN, RN, FNP-BC, is a nationally board-certified family nurse practitioner with fifteen years of experience providing nursing care. She excels at coordinating multidisciplinary care, developing patient treatment plans, and always works to deliver excellent clinical care with compassion. She is a member of the American Academy of Nurse Practitioners and Sigma Theta Tau, the national honor society of the nursing profession.

Brown earned her master's of science in nursing from Georgetown University and her bachelor's of science in nursing from Northwestern State University.

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.

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. Castro is a board-certified family medicine physician. He attended medical school at Arizona College of Osteopathic Medicine in Glendale, AZ and completed his residency at Largo Medical Center in Largo, FL. Dr. Castro's professional research experience includes multiple studies at the University of Michigan Cancer Center in the diagnosis and treatment of head and neck cancer. Dr. Castro's special areas of focus include:
- osteopathic manipulation and trigger point injections
- sports medicine and joint infection
- dermatologic procedures

Dr. Castro is a member of the American College of Osteopathic Family Physicians (ACOFP).

Dr. Castro treats patients of all ages.

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. 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. 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. Petrus is board certified in family medicine. He attended medical school at Southeastern University in North Miami Beach, Florida, where he earned his doctorate degree in osteopathy. Dr. Petrus completed his residency at Suncoast Hospital in Largo, Florida. As an undergraduate, he earned his bachelor of science degree in biology from the University of South Florida in Tampa, Florida. Dr. Petrus is a member of the American College of Osteopathic Family Physicians and the American Osteopathic Association.

Dr. Petrus treats patients 18 years of age and older.

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. Gadea is a board-certified internal medicine physician. He completed his undergraduate degree in biology at the University of South Florida in Tampa, FL. Dr. Gadea went on to complete his medical degree in osteopathic medicine at Nova-Southeastern College of Osteopathic Medicine in Davie, FL and an internal medicine residency at the Philadelphia College of Osteopathic Medicine in Philadelphia, PA.

Dr. Gadea has practiced as a primary care physician in the Tampa Bay area since 1998, providing care for adult and geriatric patients. For over six years, he served as a medical director for a private/public collaboration between the Florida Agency for Health Care Administration (AHCA) and Pfizer pharmaceutical company leading a disease management program specifically designed to help a large group of patients suffering from chronic medical conditions such as congestive heart failure and diabetes to better understand their medical conditions and health needs in order to better care for themselves and improve their quality of life.

Dr. Gadea's professional interests include individualized diabetes care, hypertension, chronic obstructive pulmonary disease and hyperlipidemia. He focuses on preventive health and patient education, and encourages his patients to take an active part in their healthcare plan.

Dr. Gadea has received numerous 'Patients Choice Awards' and was recently recognized as one of 'America's Best Physicians' by the National Consumer Advisory Board. He is a member of the American Osteopathic Association and has received recognition from the National Committee for Quality Assurance for diabetes care. He is fluent in English and Spanish.

Outside of the office, Dr. Gadea enjoys exercising, fishing and travelling with his family.