Our Providers
Meet Our Providers
GI North is comprised of a team of diverse providers dedicated to compassionate, individualized care for every patient, every time.
Gastroenterologists
DR. SIMON COFRANCESCO
Dr. Tyler An
Dr. Chunsu Jiang
Dr. Haoran Peng
Dr. Betty Li
Pathologist
Dr. Tara Chang
Advanced Practice Providers
Jessica Calabro MSN, BSN, AGACNP-BC, RN, RNFA
Aashna Jain
Raven Rose
Shubar Bahaduri
Dr. Simon Cofrancesco
Board-Certified Gastroenterologist
GI North was founded in September 2011 after Dr. Cofrancesco relocated to the North Atlanta area from rural Mississippi with his wife and five children. Since that time, Dr. Cofrancesco’s vision to build a practice focused on excellence in patient care and experience has continued to expand to what it is today. GI North now provides enhanced patient access by having clinic locations in four counties, a state-of-the-art endoscopy center, in-house anesthesia, and a pathology lab.
Dr. Cofrancesco graduated with honors from Kansas City University of Medicine and Bioscience. He then completed his residency at Tufts University affiliate Bay State Medical Center in Springfield, MA and went on to complete his Gastroenterology fellowship at the Long Island College Hospital in NYC.
Upon completion of his training, Dr. Cofrancesco moved to an underserved area in Mississippi with the intention of only staying for a few years. Instead, he stayed for over 15 years, met his wife, Roxanna, and started his family. In addition to building a successful practice, Dr. Cofrancesco also served as Chief of Staff at the local hospital in 2014.
Dr. Cofrancesco performs both basic and advanced endoscopic procedures in addition to providing medical management of all forms of GI diseases. He remains board certified by the ABIM, and has over 30 years of experience in Gastroenterology.
In his spare time, Dr. Cofrancesco enjoys adventure activities in the form of travel, hiking, and scuba diving.
Dr. Tyler An
Board-Certified Gastroenterologist
Tyler I. An, DO, was born in Seoul, South Korea, before moving to the U.S. at the age of 12. He lived in Orlando, Florida, until moving to Atlanta, Georgia, to attend college at Emory University. After graduating with a Bachelor of Science in biology, Dr. An worked at Yerkes Research Center for two years before attending the Philadelphia College of Osteopathic Medicine (Georgia campus) in Suwanee, Georgia. He completed his internal medicine residency at Michigan State University (MSU) in East Lansing, Michigan, where he received multiple awards, including Outstanding Junior Resident of the Year, Outstanding Senior Resident of the Year, and the Bernard H. Smookler Endowment Award. Dr. An then completed his gastroenterology fellowship at MSU-affiliated hospitals in Lansing, serving as a chief fellow during the last year of his fellowship.
Dr. An is board certified in internal medicine and gastroenterology. He is a member of the American College of Gastroenterology, American Gastroenterological Association, American Osteopathic Association, and American College of Osteopathic Internists. Dr. An has written and presented a number of academic papers, posters, and oral presentations at various local and national meetings. He was also a clinical instructor and a clinical assistant professor at MSU.
After the completion of his residency and fellowship training, Dr. An moved back to Georgia with his wife, Lydia, and two children, Tobias and Eliana. He is fluent in both English and Korean. Dr. An enjoys spending time with his family and friends and watching and playing sports such as basketball, football, soccer, and golf.
Degrees: Bachelor of Science in biology, Emory University; Philadelphia College of Osteopathic Medicine
Dr. Chunsu Jiang
Board-Certified Gastroenterologist
Dr. Chunsu Jiang was born in Nantong, China. At age 11, he moved to the United States to Atlanta, Georgia. He attended Emory University and graduated with a Bachelor of Arts in Psychology. After completion of his undergraduate studies, he attended Medical College of Georgia in Augusta, GA. He then completed his internal medicine residency at Emory University in Atlanta, GA. Dr. Jiang then completed his fellowship at University of Miami/Jackson Memorial Hospital in Miami, FL. He was also the T32 research fellow during his time in Miami, where he conducted clinical research in Inflammatory Bowel Disease. He was also a clinical instructor at University of Miami.
Dr. Jiang is board certified in internal medicine and gastroenterology. He has a special interest in Inflammatory bowel disease.
In his spare time, he enjoys travelling, hiking, playing board games and reading about world history. He is fluent in English and Mandarin Chinese.
Degree: BA, Emory University; MD, Medical College of Georgia.
Dr. Haoran Peng
Board-Certified Gastroenterologist
Haoran Peng was born in Huazhou, China. After graduating from Guangdong Medical College, Dr. Peng joined the general surgery residency at Sun Yat-sen University in China. During the surgery residency, he was enrolled in the PhD program to study the tumor suppressor genetic network in hepatocellular carcinoma. Then, he went to Johns Hopkins university to complete his PhD research project. He relocated to Georgia after obtaining his PhD degree in 2014. He completed the internal medicine residency at Gwinnett Medical Center, and then completed Gastroenterology fellowship at Augusta University Medical College of Georgia. He received several awards from ACP, ACG, and ASGE during his training.
Dr. Peng is board certified in internal medicine and board certified in gastroenterology. He is a member of ACG, ASGE, AASLD, and AGA. He performs both general and advanced endoscopic procedures.
Dr. Peng is fluent in English, Cantonese, and Mandarin. In his spare time, he enjoys spending time with his wife and two boys. He likes traveling, outdoor, and reading.
Degree: MD, Guangdong Medical College. PhD, Sun Yat-sen University.
Dr. Betty Li
Board-Certified Internal Medicine and Board-Certified Gastroenterology
Dr. Betty Li was born and raised in Chicago, IL. She graduated Emory University with a Bachelor of Arts in Economics & Mathematics and then completed her post-baccalaureate at Northwestern University in Evanston, IL. She attended medical school at the University of Illinois. After graduating, she went on to complete her internal medicine residency at The University of Chicago. Dr. Li then continued her education with a gastroenterology fellowship at Indiana University where she gained ample endoscopic experience in treating complex cases, caring for liver transplant patients, treating refractory inflammatory bowel disease, and conducted clinical research in disorders of gut-brain interaction. Dr. Li has coauthored several book chapters and published several academic papers and abstracts in high-impact medical journals.
Dr. Li is board-certified in internal medicine and board-certified in gastroenterology. She is a member of several gastroenterology and hepatology societies including ACG, ASGE, and AGA. She performs general endoscopic procedures and manages all GI disorders.
In her spare time, she likes to get outside as much as possible either for hikes, kayaking or hunting for a great patio moment. Dr. Li also enjoys watching a great Netflix series with her husband William, playing with her son Bryceson, and cuddling with her poodle. Dr. Li is fluent in English and Cantonese.
Degree: BA, Emory University; MD, The University of Illinois at Chicago.
Dr. Tara Chang
Board-Certified Pathologist
Dr. Chang graduated from Northeastern Ohio Universities College of Medicine in Rootstown, Ohio. She then completed her anatomic and clinical pathology residency at Boston University in Boston, Massachusetts where she served as chief resident. She went on to complete her Gastrointestinal and Liver Pathology fellowship at Brown University in Providence, Rhode Island.
Upon completion of her training, Dr. Chang moved to Tennessee and joined a hospital based private practice. After 10 years Dr. Chang relocated to the North Atlanta area to focus her practice on gastrointestinal and liver pathology.
Dr. Chang is a diplomate of the American Board of Pathology, a member of the College of American Pathology and a member of the Rodger C. Haggit Gastrointestinal Pathology Society.
In her free time Dr. Chang enjoys hiking, travel and spending time with her family.
Jessica Calabro, MSN, BSN, AGACNP-BC, RN, RNFA
Board-Certified Nurse Practitioner
Jessica Calabro was born and raised near Birmingham, Alabama, where she earned her nursing degree at the University of Alabama at Birmingham in 2007. Shortly after graduation, Jessica moved to Dawsonville, Georgia, and worked as a registered nurse for over 13 years in various specialties, including medical cardiology, endoscopy, and general surgery. In 2020, Jessica graduated from the University of Alabama at Birmingham with a master’s degree in advanced practice nursing with a registered nurse first assist subspecialty. She is board certified by the American Nurses Credentialing Center as an adult-gerontology acute care nurse practitioner. Jessica is a member of the Sigma Theta Tau International Honor Society of Nursing, American Association of Nurse Practitioners, and Association of periOperative Registered Nurses. In her free time, she enjoys spending time with her family and hiking in the North Georgia mountains.
Specialty: Certified Nurse Practitioner
Degrees: Bachelor of Science in nursing, University of Alabama at Birmingham; master’s degree in advanced practice nursing with a registered nurse first assist subspecialty, University of Alabama at Birmingham
Aashna Jain
Board-Certified Physician Assistant
Aashna Jain was raised in Fayetteville, NC and in Bangalore, India from 2007-2011. In 2020, Aashna graduated from the University of North Carolina at Chapel Hill with a dual Bachelor’s degree in Exercise & Sports Science and South Asian Studies. During her time at Carolina, Aashna volunteered at UNC Children’s Hospital and worked as a Pediatric Medical Assistant. Following her undergraduate studies, she moved to Worcester, Massachusetts and received her Master’s in Physician Assistant Studies (MPAS) from MCPHS University in 2022. Upon completing her Master’s degree, she relocated to Georgia to be closer to family.
She is fluent in English, French and Hindi. In her spare time, Aashna enjoys playing racquetball, traveling and exploring her new home in the Buford area.
Degrees: B.A Exercise & Sports Science, B.A South Asian Studies, UNC-Chapel Hill; Master’s in Physician Assistant Studies, MCPHS University-Worcester.
Raven Rose
Board-Certified Physician Assistant
Raven Rose was born into a military family and was raised in Georgia, mainly Sharpsburg and Augusta. She moved from Augusta to Dahlonega in order to play Soccer for the University of North Georgia. After her sophomore year, she moved to Athens and transferred to the University of Georgia to complete her Bachelor of Science in Biology in 2019. After graduation, she worked as a Clinical Technician on the IMCU floor of St. Mary’s Hospital in Athens. In 2021, she moved to Savannah to complete a Masters in Physician Assistant Studies (MPAS) at South University. In 2023, she joined the GI North family.
In her spare time, she enjoys traveling, playing sports, trying new foods, hiking, and spending time with her friends and family.
Degrees: BS in Biology from UGA; MPAS from South University
Shubar Bahaduri
Board-Certified Physician Assistant
Shubar Bahaduri was born in New York City and raised in Lawrenceville, GA. In 2015, Shubar graduated from the University of Georgia with a Bachelor’s degree in Public Health. During his time in Athens, GA, Shubar volunteered at Athens Inclusive Recreation and Sport (AIRS) and worked as a patient care assistant. In 2022, he received his Master’s in Physician Assistant Studies (MPAS) from Morehouse School of Medicine in Atlanta.
He is fluent in English and Farsi. In his spare time, Shubar enjoys playing and watching soccer, playing volleyball, traveling, and supporting his Georgia Bulldawgs. Shubar is also a huge Real Madrid and Premier League soccer fan.
Degrees: B.A. Public Health from University of Georgia; Master’s in Physician Assistant Studies from Morehouse School of Medicine.
