Nationally ranked care. Another way our love for kids just keeps on growing.
SSM Medical Group Cardinal Glennon Pediatrics in O'Fallon IL 
Julia Harms, NP; Melody Santos, MD;
Joseph Silhavy, MD

O'Fallon, IL | SSM Health Medical Group Pediatric 

Our Services

We provide routine check-ups for well children including physicals and immunizations for children 0 -18 years old.

We also provide health care for sick children.

Schedule an Appointment

Be Ready and Call Ahead

Address and Directions

Billing and Health Insurance

Featured Links

Contact Us

Meet the Team


Schedule an Appointment

To schedule an appointment, please call 618-222-9244

Our hours of operation are:

 Monday   9 am - 7 pm
 Tuesday   9 am - 5 pm
 Wednesday   9 am - 5 pm
 Thursday   9 am - 7 pm
 Friday   9 am - 5 pm
 Saturday   9 am - Noon 


Be Ready and Call Ahead

Please remember to bring your child's insurance information to each appointment so that we may make sure your information is current. Your copay is due at the time of the appointment.

If you are running late for or are unable to keep an appointment please call ahead. This will help ensure that we see our patients in a timely manner and will help us to reschedule any missed appointments.

Address Directions

SSM Health Medical Group Pediatrics - O'Fallon, IL
604 Pierce Boulevard
O'Fallon, IL 62269

Get Directions

Billing and Health Insurance

We ask that our parents help us by doing research into their insurance coverage and what it covers and does not cover. Please also inform us of where testing can be done if needed. It is also important to know if your insurance plan covers well exams and immunizations.

This list represents the major plans in which SSM Health physicians and facilities participate, however, it does not include every contract held by every SSM Health provider. Many plans have variations and some have certain limitations. Therefore, all may not apply to every physician. If your insurance plan is not listed below or you would like to verify that the physician you are interested in seeing participates in your insurance plan, please give us a call.

  • Advantra (GHP’s Medicare HMO & PPO)
  • Aetna, Inc. (HMO, PPO and All Other Products)
  • Anthem Blue Cross and Blue Shield (HMO, PPO, Alliance, AllianceCHOICE, and Other Products)
  • Beech Street Corporation (PPO)
  • Care Improvement Plus
  • CCO, Inc. (PPO)
  • ChoiceCare Network (Subsidiary of Humana) (PPO)
  • CIGNA HealthPlan of St. Louis (HMO, PPO, OAP, Flex and All Other Products)
  • Coventry Health Care Plans
  • Employers Health Network
  • Essence (Medicare HMO)
  • Evolutions Healthcare System (formerly Guardian) (PPO)
  • ExclusiveChoice (DEC)
    First Health
  • Galaxy Health Network (PPO)
  • Gold Advantage
  • Great West/One Health Plan (PPO, HMO, and All Other Products)
  • Group Health Plan (HMO, PPO and All Other Products)
  • Harmony Health Plan of IL (Medicaid HMO)
  • Harmony Health Plan of MO (Medicaid HMO)
  • HealthCare USA (Medicaid HMO)
  • Health Management Network (PPO)
  • HealthLink, Inc. (HMO, PPO and All Other Products)
  • HealthNet Federal Services (TriCare/CHAMPUS) (Military Program)
    HFN, Inc.
  • Medicare Complete (United HealthCare’s Medicare HMO & PPO)
  • Mercy Care Plus (Medicaid HMO)
  • Mercy Health Plans (HMO, PPO, ASO and All Other Products)
  • Mercy Medicare Advantage (PPO)
  • Missouri Care Health Plan (Medicaid HMO)
  • Molina Healthcare of Missouri (Medicaid HMO)
  • MultiPlan (PPO)
  • NPPN
  • Private Health Care System (PPO)
  • Three Rivers Provider Network (PPO)
  • United HealthCare of the Midwest, Inc. (HMO, PPO, CHOICE, Select, Options and All Other Products)
  • Wellcare


Featured Links

New patient registration form (PDF)

Medical records release form (PDF)

Contact Us

Someone will be happy to answer your call between 9 am - 4 pm Monday - Friday and 9 am - 11:30 pm on Saturdays.

Phone   618-222-9244
Fax   618-222-9248

After hours, please call the Medical Exchange number at 618-398-9588. If you or your child are experiencing a true medical emergency call 911 or head to the nearest Emergency Room.

Meet the Team

dr. melody santos, cardinal glennon pediatrician in ofallon, il

Melody L. Santos, MD

dr. joseph silhavy, cardinal glennon pediatrician in ofallon, il

  Joseph A. Silhavy, MD

julia harms, cardinal glennon nurse practitioner in ofallon, il

Julia Harms, Nurse Practitioner


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