Guilford Medical Associates Scott L. Holwerda, M.D.

Internal Medicine

A Georgia native, Dr. Scott Holwerda received his undergraduate training at Samford University in Birmingham, Alabama. He then returned to Georgia to attend Mercer University School of Medicine in Savannah. He completed his Internal Medicine Internship and Residency at Wake Forest Baptist Medical Center. He is newly married and looking forward to starting a family…

Guilford Medical Associates William Douglas Shaw, Jr., M.D

INTERNAL MEDICINE DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE Dr. Shaw was born and raised in Greensboro and graduated from Page High School. He received his BA from the University of North Carolina at Chapel Hill and his MD from Wake Forest University School of Medicine. He completed an Internal Medicine Internship and Residency at Wake…

Guilford Medical Associates John M. Russo, M.D.
John M. Russo, M.D.

INTERNAL MEDICINE DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE Dr. Russo is a native of Long Island, New York. He graduated from the University of New York at Albany and received his MD from the University of New York Health Science Center at Syracuse School of Medicine. He completed his Internal Medicine Internship and Residency at…

Guilford Medical Associates Richard W. Tisovec, M.D.
Richard W. Tisovec, M.D.

INTERNAL MEDICINE DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE A Chicago native, Dr. Tisovec graduated from the University of North Carolina at Chapel Hill. He completed medical school at the University of Illinois College of Medicine and Residency Training in Internal Medicine at the University of North Carolina at Chapel Hill. Dr. Tisovec joined Guilford Medical…

Guilford Medical Associates Mark A. Perini, M.D.
Mark A. Perini, M.D.

MARK A PERINI, MD INTERNAL MEDICINE DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE A Greensboro native, Dr. Perini graduated from Greensboro Grimsley High School in 1990. He also graduated from the University of North Carolina at Chapel Hill and the Wake Forest University School of Medicine. He completed the Internal Medicine Residency Program, Primary Care Track…

Guilford Medical Associates Daniel G. Paterson, M.D.
Daniel G. Paterson, M.D.

INTERNAL MEDICINE / DIABETES DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE A Boston native, Dr. Paterson graduated from Boston University and completed medical school at George Washington University. Following residency in Internal Medicine at Walter Reed Army Medical Center, he served in the army for 10 years, achieving the rank of major. Dr. Paterson joined Guilford…

Guilford Medical Associates Ravi R. Avva, M.D., Ph.D.
Ravi R. Avva, M.D., Ph.D.

INTERNAL MEDICINE / DIABETES DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE

INTERNAL MEDICINE / DIABETES DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE A Greensboro native, Dr. Avva graduated from the University of North Carolina at Chapel Hill and Duke University School of Medicine. He received a Ph.D. in Microbiology and Immunology from Duke University and also completed his residency in Internal Medicine at Duke University. Dr. Avva…

Guilford Medical Associates Stephen A. South, M.D.
Stephen A. South, M.D.

Medical Staff

INTERNAL MEDICINE / DIABETES, ENDOCRINOLOGY AND METABOLISM DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE DIPLOMATE, AMERICAN BOARD OF IM IN ENDOCRINOLOGY AND METABOLISM A Vermont native, Dr. South moved to North Carolina with his parents in 1973. He graduated from the University of North Carolina at Greensboro and from the Bowman Gray School of Medicine at…

Guilford Medical Associates Richard A. Aronson, M.D.
Richard A. Aronson, M.D.

Medical Staff

RICHARD A. ARONSON, MD INTERNAL MEDICINE / DIABETES DIPLOMATE, AMERICAN BOARD OF INTERNAL MEDICINE A Duke University graduate, Dr. Aronson is originally from Boston. He completed medical school at the Bowman Gray School of Medicine at Wake Forest University and a residency in internal medicine at the University of Florida in Gainesville. Dr. Aronson joined…