SSM Health Medical Group
Gregorius Penilla, MD Internal Medicine in Fenton, MO
SSM Health Medical Group
1345 Smizer Mill Road, Suite 1100 Fenton, MO 63026
Greg Penilla, MD, is an internal medicine physician. He graduated medical school from the University of Santo Tomas and completed his residency at Saint Louis University.
Dr. Penilla has been practicing medicine over 30 years and cares for patients 18 years of age and older.
Dr. Penilla has clinical interests in preventive medicine and was awarded recognition from the National Committee for Quality Assurance (NCQA) Diabetes Physician Recognition Program for meeting national standards for diabetes care.
"The best interest of my patients is always my priority. I focus on providing the most convenient and best possible medical care. I always try to find time to see patients on the same day if necessary. Patients appreciate my strive to always be on schedule." - Greg Penilla, MD
Dr. Penilla has been practicing medicine over 30 years and cares for patients 18 years of age and older.
Dr. Penilla has clinical interests in preventive medicine and was awarded recognition from the National Committee for Quality Assurance (NCQA) Diabetes Physician Recognition Program for meeting national standards for diabetes care.
"The best interest of my patients is always my priority. I focus on providing the most convenient and best possible medical care. I always try to find time to see patients on the same day if necessary. Patients appreciate my strive to always be on schedule." - Greg Penilla, MD
About Me
Specialties
Internal Medicine
Gender
Male
Languages
Tagalog
Education
St. Louis University Health Sciences Center
Residency, 1986
St. Louis University Hospital
Internship, 1984
University of Santo Tomas, Philippines
Medical School, 1981
Hospital Affiliations
SSM Health St. Clare Hospital - Fenton
Certifications
Drug Enforcement Administration
Missouri Dept of Health/Narcotics&Dangerous Drugs
Missouri State Board of Registration
Medical Interests
Primary care
Reviews
Rating Breakdown
Reviews are measured on a scale of 1 to 5, with 5 being the best score.
Question Breakdown
4.8Overall Experience4.9Listened Carefully4.9Explained Things Clearly4.9Knew Medical History4.9Involved in Care Decisions4.9Showed 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.
4.9 out of 5
217 ratings,
95 reviews
9/9/2026
Excellent physician
9/4/2026
Everyone very helpful
9/2/2026
He is a superb physician, professional, caring and thorough! I couldn't ask for anything better.
9/1/2026
Dr Penilla is a wonder physician and I would recommend anyone to him.
8/22/2026
Very nice and helpful
Map & Directions
SSM Health Medical Group
1345 Smizer Mill Road, Suite 1100 Fenton, MO 63026
Mon
8:30 am - 4:30 pm
Tue
8:30 am - 4:30 pm
Wed
8:30 am - 4:30 pm
Thu
8:30 am - 4:30 pm
Fri
8:30 am - 4:30 pm
Sat
Closed
Sun
Closed
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