Stephanie Lynn Simpson, D.O.
Hospitalist Physician · O Fallon, IL
Stephanie Lynn Simpson, D.O. is a hospitalist physician with a practice address in O Fallon, Illinois, and NPI 1598183378, issued on Mar 31, 2014. Check the license (Illinois 036157114, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Stephanie Lynn Simpson
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 036157114 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3 St. Elizabeth's Blvd, O Fallon, IL 62269
- Phone
- (618) 233-5480
- Enumerated
- Mar 31, 2014
- Record last updated
- Jun 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (618) 222-4792
- Medicare enrollment
- Enrolled (PECOS I20210713003488); accepts Medicare assignment
- Medical or professional school
- Edward Via Col Of Osteo Medicine-Virginia Campus, 2014
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 1,535 in Illinois → Look up another NPI →
Also registered at 3 St. Elizabeth's Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hina Usman, MDFamily Medicine Physician1720575053
Verify Stephanie Lynn Simpson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036157114Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average hospitalist physician in 2024
490 Medicare Part D claims for 240 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Furosemide38 claims
- Cefdinir33 claims
- Metoprolol Succinate25 claims
- Atorvastatin Calcium24 claims
- Prednisone24 claims
- Amlodipine Besylate20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America-Illinois Hospitalists, LLPAlton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Lynn Simpson among 1,535 hospitalist physician records in Illinois
Stephanie Lynn Simpson, D.O. is one of 1,535 hospitalist physician records with a practice address in Illinois. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 48% of them.
- NPI issued2014 · 48% of these records are older, 48% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated2014 · median 2013 among the 1,339 with a school on file
- Record last updated2021 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Illinois
There are 1,535 hospitalist physician records in Illinois.
All 1,535 in Illinois → Every provider in O Fallon → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Vincent Duenas, MDO Fallon, IL 622691083142152
- Maaroof Islam, M.D.O Fallon, IL 622691548656747
- Robinder Sahi, M.D.O Fallon, IL 622691386200657
- Isaac Tran, M.D.O Fallon, IL 622691154777597
- Nnenna Uzodi, MD, MPHBelleville, IL 622691386272169
- Seema VermaO Fallon, IL 622691326380908
- Adrian Bennett, DORed Bud, IL 622781477086239
- Crystal Carmicheal, M.D.Greenville, IL 622461619138682
Common questions
What is Stephanie Lynn Simpson, D.O.'s NPI number?
Stephanie Lynn Simpson, D.O.'s National Provider Identifier (NPI) is 1598183378, issued on Mar 31, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Lynn Simpson, D.O. located?
The NPPES record lists a practice address at 3 St. Elizabeth's Blvd, O Fallon, IL, 62269. Phone: (618) 233-5480. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Lynn Simpson, D.O.'s license?
NPPES lists Illinois license number 036157114, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephanie Lynn Simpson, D.O. prescribe under Medicare Part D?
In 2024, Stephanie Lynn Simpson, D.O. had 490 Medicare Part D claims for 240 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Stephanie Lynn Simpson, D.O.'s MIPS final score?
The 2023 MIPS final score is 90.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.