Our Practice
Barrington Obstetrics and Gynecology Associates was founded in 1979 during the founding of Good Shepherd Hospital, so we have plenty of experience in meeting your needs. We continue to work exclusively with Good Shepherd and have offices in the medical buildings on the hospital grounds as well as an office further northwest in Crystal Lake.
Our Physicians
All of the physicians in our practice are board certified, are members of the American College of Obstetricians and Gynecologists (ACOG) and are licensed to practice in Illinois. All of the physicians continue to obtain Continuing Medical Education (CME) credits to further enhance their medical skills and to provide our patients with the most recent advances in gynecological and obstetrical care.
Thomas A. DiGiulio, M.D.
Dr. DiGiulio joined the practice in 1988 after completing his residency in Obstetrics and Gynecology at Rush-Presbyterian Hospital in Chicago. He graduated from Rush Medical College, and also has a Bachelor of Arts from Northwestern University.
In addition to ACOG, Dr. DiGiulio is a member of the Chicago Medical Society, the Illinois State Medical Society and the American Fertility Society.
Dr. DiGiulio is originally from Peoria, Illinois. He is married and has four children, has run in the Chicago Marathon and is a Northwestern Football booster.
Ann T. Warren, M.D.
Dr. Warren joined the practice in 1998. She completed her residency at Rush-Presbyterian Hospital in Chicago including acting as Chief Resident. She is a graduate of Northwestern University Medical School and has a Bachelor of Science from Stanford University.
Dr. Warren is President-Elect of the medical staff at Good Shepherd Hospital and will become President in 2006.
Prior to joining Barrington Obstetrics and Gynecology Associates Dr. Warren practiced in the Barrington and Chicago area for ten years.
Dr. Warren is married with two children and plays competitive racquetball.
Tina Fiore Knight, MS, PA-C
Tina joined the practice in 2005 as a Physician Assistant. Tina graduated from Finch University of Health Sciences/The Chicago Medical School with a Master of Science in the Physician Assistant program in 2001, then moved immediately into practice with a large OB/Gyn group. She has a Bachelor of Science from the University of Illinois Chicago.
Ms. Knight is Board Certified with the National Commission on Certification of Physician Assistants with Special Recognition in Surgery. She is a member of the Association of Physician Assistants in Obstetrics & Gynecology, the American Academy of Physician Assistants, the Illinois Academy of Physician Assistants and the American Academy of Surgical Physician Assistants.