Dr. John S. Vassar MD Anesthesiologist

Dr. John Vassar is an anesthesiologist in Aberdeen, South Dakota and is affiliated with Avera St. Luke's Hospital. He received his medical degree from Saint Louis University School of Medicine and has been in practice for 29 years. He is one of 8 doctors at Avera St. Luke's Hospital who specialize in Anesthesiology.

Are you Dr. Vassar? Claim/Edit Profile

Office Location

See Contact Information

Specialty & Clinical Interests

Anesthesiologist: General Anesthesiology

Education & Medical Training

Naval Medical Center, San Diego
Residency, Anesthesiology, 1990–1993

St Mary's Health Center
Residency, Internal Medicine, 1985–1986

Saint Louis University School of Medicine
Class of 1985

Certifications & Licensure

American Board of Anesthesiology
Certified in Anesthesiology

SD State Medical License
Active through 2015


Report a Correction — If you are aware of information on this page that is out of date or incorrect, please let us know.

Patient Advice & Support


See More
Our Doctor Finder includes most U.S. physicians. Doctors are not ranked, learn more.

Nearby Anesthesiologists

See all Anesthesiologists near Aberdeen, SD See all Anesthesiologists in South Dakota

U.S. News Best Hospitals

U.S. News Best Hospitals

To rank the best adult and children's hospitals, U.S. News analyzes data for fewer than 5,000 centers.

See Hospitals by Specialty

Find a Hospital by Location

Your Message Has Been Submitted

As part of our research on the correction you submitted, you may be contacted at the email address provided.

Sorry, Your Message Could Not Be Submitted

Please try again later, or E-mail your message to doctors@usnews.com and include the Web address (URL) of the page that contains incorrect information.