Peter Fonseca, MD
Thoracic Surgery, Cardiothoracic Vascular Surgery, General Surgery

Dr. Fonseca is an experienced thoracic surgeon with a number of years in private practice. He earned his medical degree from Saint Louis University, completed his internship and residency at Wright State University and his fellowship at the Medical College of Wisconsin. Additionally, Dr. Fonseca completed his doctorate from Purdue University in Biochemistry.
Dr. Fonseca is board certified in thoracic and general surgery. He has special interest in minimally invasive lobectomies utilizing the daVinci Surgical system.
Dr. Fonseca is board certified in thoracic and general surgery. He has special interest in minimally invasive lobectomies utilizing the daVinci Surgical system.
About Peter
Specialties
Thoracic Surgery
Cardiothoracic Vascular Surgery
General Surgery
Gender
Male
Education
St. Louis University School of Medicine
Medical School, 1987
Medical College of Wisconsin
Fellowship, 1994
Wright State University - School of Medicine
Residency, 1992
Purdue University
Doctor of Philosophy, 1983
Wright State University - School of Medicine
Internship, 1988
Certifications
Missouri State Board of Registration
American Board of Surgery
American Board of Thoracic Surgery
Missouri Dept of Health/Narcotics&Dangerous Drugs
Drug Enforcement Administration
Patient Reviews
The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
4.8 out of 5
45 ratings,
16 reviews
11/19/2025
Dr. Fonseca explained everything in terms my husband and I understood. He was thorough in my examination and listened carefully to my issues. He is a caring person and his patients are lucky to have him as a physician
11/5/2025
He was the best very professional
10/17/2025
I feel very fortunate that I was refered to Dr Fonseca.
10/17/2025
Great
9/9/2025
His bed side manner is absolutely impeccable
Map & Directions
SSM Health Heart & Vascular Care
400 First Capitol Drive, Suite 401,St. Charles, MO 63301
