DAVID A. PFEFFERKORN, M.D.

Medical School: St. Louis University,
St. Louis, MO

Internship: Surgery - St. Louis University Group of Hospitals

Residency: Internal Medicine - St. Louis University Group of Hospitals

Special Services: Board Certified in Internal Medicine

A PRACTICING PHYSICIAN WITH FERGUSON MEDICAL GROUP
SINCE 1977.

STEPHEN T. WELTON, M.D.

Medical School: American University of the Caribbean,
School of Medicine,
Plymouth, Montserrat, BWI

Internship: Deaconess Hospital,
St. Louis University,
St. Louis, Mo.

Residency: Deaconess Hospital,
St. Louis University,
St. Louis, Mo.

Special Services: Medical Director

A PRACTICING PHYSICIAN WITH FERGUSON MEDICAL GROUP
SINCE 1988.

Michael Critchlow, M.D., FACAAI

Medical School: Vanderbilt School of Medicine
Nashville, Tennessee

Internship: Vanderbilt University Hospital
Nashville, Tennessee
University of Missouri Medical Center
Columbia, Missouri

Residency: University of Missouri Medical Center
Columbia, Missouri
Medical College of Ohio
Toledo, Ohio

Fellowship: Tulane University Medical School
New orleans, Louisiana

Professional Memberships:
American Academy of Allergy, Asthma & Immunology
Fellow, American College of Allergy, Asthma & Immunology
Quad County Area Medical Society
Missouri State Medical Association

Special Services: Board Certified, Internal Medicine
Board Certified, Allergy and Immunology

A PRACTICING PHYSICIAN WITH FERGUSON MEDICAL GROUP
SINCE 2007.