Summary

Dr. Geraldine Ryan is a medical doctor specializing in internal medicine and pediatrics, providing comprehensive care for patients from childhood through adulthood. She earned her medical degree from St Louis University School of Medicine and has been practicing for 38 years, building extensive expertise in caring for diverse patient populations. Dr. Ryan speaks English and brings nearly four decades of medical experience to her practice.

Dr. Ryan is affiliated with Mercy Hospital Saint Louis and practices at Mercy Clinic Primary Care in O'Fallon, Missouri. She treats a range of conditions including back pain during pregnancy, back pain in children and teens, and rhinitis. Her procedures include physical therapy, allergen immunotherapy, and sublingual immunotherapy to help patients manage various health concerns. Patients have given her an average rating of 4.0 on Vitals.

AI-generated from data on this provider profile.

Quick Facts

  • 4
  • 38 years of experience
  • 20 insurance plans accepted
  • speaks English
  • St Louis University School Of Medicine
  • 8 written reviews
  • 2 specialties
  • 7 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Female

Office Location

Mercy Clinic Primary Care - Winghaven

2223 Technology Dr Ste 40O Fallon, MO 63368
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 4:00 pm
SatClosed
SunClosed

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Dr. Geraldine A. Ryan
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Dr. Geraldine A. RyanDr. Siroth Charnond, MDEric HarkerDr. Michael Albrecht, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients
3.2 
3.9 
38 Years of Experience 31 Years of Experience 25 Years of Experience 14 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English Speaks English
O Fallon , MOFLORISSANT , MOLyons , COLANSING , KS
Med School: St Louis University School Of Medicine Med School: University of Mo-Kansas City Sch of Med, Kansas City Mo Med School: Duke University School Of Medicine Med School: University Of Kansas School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Geraldine A. Ryan

  • Accepts Medicare
  • Aetna
  • Anthem BlueCross BlueShield
  • Ascension Smart Health
  • Cigna
  • Essence
  • Health Net Federal Services
  • Healthlink
  • Healthy Blue (formerly Missouri Care)
  • HFN Inc.
  • Home State Health
  • Humana
  • Humana Military
  • Live360 (Health Choices Network)
  • Medica
  • MultiPlan/PHCS
  • NHC Advantage
  • PPHP (Provider Partners Health Plan)
  • Sterling Medicare
  • United Healthcare
  • WellCare Medicare Advantage

Medical Specialties

Dr. Geraldine A. Ryan has the following 2 specialties

Specialty Expertise

Dr. Geraldine A. Ryan has the following 7 areas of expertise

  • Check-up
  • Heartburn
  • Immunization
  • Internist/pediatrician
  • Physical
  • Vaccination
  • Weight Loss

Certifications, License, & Education

38 Years Experience

MEDICAL LICENSE

Medical Doctor, Missouri, 2026, Expired

EDUCATION & TRAINING

Medical School

St Louis University School Of MedicineGraduated in 1988

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Frequently Asked Questions

Is Dr. Geraldine Ryan accepting new patients?
Dr. Geraldine Ryan has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Where is Dr. Geraldine Ryan's office located?
Dr. Geraldine Ryan's office is located at 2223 Technology Dr Ste 40, O Fallon, MO, 63368.
Does Dr. Geraldine Ryan accept virtual/telehealth appointments?
Dr. Geraldine Ryan has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. Geraldine Ryan accept my insurance?
You can see the insurance plans that Dr. Geraldine Ryan accepts on their Vitals profile.
Which hospitals is Dr. Geraldine Ryan affiliated with?
Dr. Geraldine Ryan is affiliated with Mercy Hospital Saint Louis.

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