Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stephanie Lynn Simpson, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1598183378

Stephanie Lynn Simpson, DO is a Hospitalist in O Fallon, Illinois. Graduated from Edward via Col of Osteo Medicine-Virginia Campus in 2014, 12 years ago. Practices with Cep America-Illinois Hospitalists, LLP, a 196-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
12
Trained at
Edward via Col of Osteo Medicine-Virginia Campus
Licensed in
IL
In the registry since
2014
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

O Fallon, IL

No coordinates on file. Search this address in Google Maps

Additional practice locations (1)

  • 1402 S Grand Blvd # M260, Saint Louis, MO 63104-1004 — (314) 577-8750

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036157114 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1598183378
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 31, 2014
Last updated in NPPESJune 15, 2021
Certification dateJune 15, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolEDWARD VIA COL OF OSTEO MEDICINE-VIRGINIA CAMPUS
Graduated 2014 (12 years in practice)
Group practice Cep America-Illinois Hospitalists, Llp — 196 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients355
Services billed 1,175 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Hshs St Elizabeth'S Hospital Hospital · O Fallon, IL
  • St Joseph'S Hospital Hospital · Highland, IL

Colleagues at Cep America-Illinois Hospitalists, LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 196 clinicians in the practice; 12 are shown here.

Other providers in O Fallon