USF Department of Internal Medicine

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.

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.

Mallory Lott, DNP, APRN, FNP-C, is a certified Family Nurse Practitioner with more than four years of direct patient care experience. She received her bachelor of science in nursing and doctor of nursing practice from the University of Florida in Gainesville, FL. Mallory has worked in both inpatient and outpatient healthcare settings at UF Health Shands Hospital and an internal medicine office. Using her clinical experience and personal observations, Mallory is committed to following evidence-based guidelines and takes a holistic approach to her patient care.

Mallory treats patients of all ages.

Dr. Kolanko is a board-certified family medicine physician. She completed her medical degree at the Medical University of Silesia in Katowice, Poland, and a residency in family practice at Indiana University.

Dr. Koslacz-Kolanko's previous experience includes practicing as a family medicine provider and medical director at the Kenosha County Health Center in Kenosha, WI. Her professional interests include community health, disease prevention and management of chronic disease. She is a member of the American Academy of Family Physicians and the Florida Medical Association.

Outside the office, Dr. Koslacz-Kolanko enjoys traveling, cooking, and spending time with family and friends. She is fluent in English and Polish.

Dr. Koslacz-Kolanko treats patients 12 years of age and older.

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. Ashish Singhal is a fellowship-trained multi-organ transplant surgeon with an affinity for treating patients with end-stage liver diseases and liver cancer and specializes in liver transplantation, liver resection, and living-donor liver transplantation.

Prior to joining Tampa General Hospital, Dr. Singhal served as a senior consultant surgeon at Fortis Hospitals, India. Dr. Singhal brings a wide range of experience and knowledge of the complex living-donor liver transplantation procedure.

Dr. Singhal's extensive experience includes working as an attending surgeon in the Division of Abdominal Organ Transplantation and Hepatobiliary Surgery at Allegheny General Hospital in Pittsburgh. He spent two years as a consultant surgeon in the Division of Liver Transplantation and Hepatobiliary Surgery at Fortis Hospital in Mohali, India, after being an assistant professor of surgery at the University of Cincinnati Medical Center.

In addition to transplantation, Dr. Singhal treats patients with liver disease, cancer of the liver, gallbladder, bile ducts, and other cancers that spread to the liver from other organs. He has an unparalleled commitment to working with patients in complex health circumstances and providing high-quality care to improve the quality of life of patients.

Dr. Singhal is credited with several publications, book chapters, presentations, abstracts, and journal reviews in areas of his expertise. Affiliated with the American Society of Transplant Surgeons and numerous professional organizations, Dr. Singhal has served as a committee member for many professional organizations too. His research interests include living donor liver transplantation, liver cancer, liver regeneration, and transplant immunology/pharmacology.