SSM Health Medical Group
Antonio Petralia, MD Internal Medicine, Rheumatology in Wentzville, MO

Dr. Antonio Petralia is a rheumatologist serving adult patients ages 18 and older throughout the St. Louis metropolitan area. He specializes in the evaluation, diagnosis, and treatment of autoimmune and inflammatory conditions that affect the joints, muscles, and connective tissues.
Dr. Petralia offers personalized treatment plans that may include oral medications, joint injections, infusion therapy, physical or occupational therapy, and referrals to other specialists as needed. His clinical interests include managing rheumatoid arthritis, psoriatic arthritis, osteoporosis, and gout. He also has extensive experience treating complex conditions such as systemic lupus erythematosus, sarcoidosis, autoimmune myopathies, relapsing polychondritis, and polymyalgia rheumatica.
Dr. Petralia believes in a collaborative approach to care. His mission is to educate and empower patients by providing the knowledge and resources they need to preserve function and restore quality of life.
He is a member of the American Medical Association and the American College of Rheumatology.
Dr. Petralia offers personalized treatment plans that may include oral medications, joint injections, infusion therapy, physical or occupational therapy, and referrals to other specialists as needed. His clinical interests include managing rheumatoid arthritis, psoriatic arthritis, osteoporosis, and gout. He also has extensive experience treating complex conditions such as systemic lupus erythematosus, sarcoidosis, autoimmune myopathies, relapsing polychondritis, and polymyalgia rheumatica.
Dr. Petralia believes in a collaborative approach to care. His mission is to educate and empower patients by providing the knowledge and resources they need to preserve function and restore quality of life.
He is a member of the American Medical Association and the American College of Rheumatology.
About Me
Specialties
Internal Medicine
Rheumatology
Gender
Male
Education
Lewis-Gale Hospital
Residency, 2023
University of Missouri- Kansas City
Medical School, 2020
MetroHealth Medical Center
Fellowship, 2025
Hospital Affiliations
SSM Health DePaul Hospital - St. Louis
SSM Health St. Clare Hospital - Fenton
SSM Health St. Joseph Hospital - St. Charles
SSM Health St. Mary's Hospital - St. Louis
Certifications
American Board of Internal Medicine
Drug Enforcement Administration
Missouri Dept of Health/Narcotics&Dangerous Drugs
Missouri State Board of Registration
Medical Interests
Autoimmune diseases
Autonomic disorders
Gout
Joint injections
Osteoporosis
Polymyalgia rheumatica
Psoriatic arthritis
Rheumatoid arthritis
Rheumatology disease
Sarcoidosis
Systemic lupus erythematosus
Reviews
Rating Breakdown
Reviews are measured on a scale of 1 to 5, with 5 being the best score.
Question Breakdown
4.9Overall Experience4.9Listened Carefully4.9Explained Things Clearly4.8Knew Medical History4.9Involved in Care Decisions5.0Showed Courtesy & Respect
Patient Reviews
SSM Health only displays patient satisfaction data for providers included in our survey process and who have a minimum of 30 returned surveys. The overall rating is an average of all responses to the survey questions listed below. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn more about our survey.
4.8 out of 5
114 ratings,
32 reviews
8/21/2026
He has a clear history of my diagnosis and provides a plan for continued treatment. Hes responsive and one of the best Rheumatologist I have had for my care.
8/15/2026
I felt comfortable talking with him about my care He was very helpful and clear in explaining everything
8/7/2026
He gave me a written report to take home to help me stay on track. It clarified issues we covered and it helped me understand interactions with other specialists currently helping me on this medical journey. He’s an amazing young man, extremely well versed in his profession.
8/5/2026
He didn’t rush me out of there and tried to answer all my questions. He even informed me of parts of my condition that I wasn’t even aware of.
7/22/2026
I felt that my thoughts mattered and he listened to me!!!!
Map & Directions
SSM Health Medical Group - Rheumatology
1603 Wentzville ParkwayWentzville, MO 63385
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