Dr. Stephanie Lynn Simpson, DO
- Medicare services, 2024
- 1,174
- Medicare patients, 2024
- 355
- Part D claims, 2024
- 490
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Practice address
- 1 St Elizabeth Blvd, O'Fallon, IL 62269
- Practice phone
- Call (217) 492-9651
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
HSHS St. Elizabeth's Hospital
O'Fallon, Illinois
Find Dr. Simpson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stephanie Lynn Simpson is a hospitalist in O'Fallon, Illinois
Dr. Simpson practices at HSHS St. Elizabeth's Hospital in O'Fallon, Illinois.
Dr. Simpson's NPI, 1598183378, was assigned on March 31, 2014. Dr. Simpson graduated from Edward Via Col of Osteo Medicine-Virginia Campus in 2014. Dr. Simpson holds Illinois license 036157114.
- NPI
- 1598183378NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688976160
- NPI enumeration date
- March 31, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 492-9651
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephanie Lynn Simpson practices at HSHS St. Elizabeth's Hospital in O'Fallon, Illinois
Dr. Simpson's primary practice is HSHS St. Elizabeth's Hospital, at 1 St Elizabeth Blvd, O'Fallon, IL 62269 in Saint Clair County. The practice phone is (217) 492-9651.
- HSHS St. Elizabeth's Hospital1 St Elizabeth Blvd, O'Fallon, IL 62269 · Saint Clair CountyPhone(217) 492-9651
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephanie Lynn Simpson is affiliated with 4 sites of care and 1 medical group
Dr. Simpson's primary practice is HSHS St. Elizabeth's Hospital in O'Fallon, Illinois. Dr. Simpson is also affiliated with HSHS St. Elizabeth's Hospital. The medical group on file is Vituity (formerly CEP America). Dmand AI also links Dr. Simpson to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephanie Lynn Simpson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simpson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HSHS St. Elizabeth's Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephanie Lynn Simpson is one of 1,321 hospitalists in Illinois
Hospitalist is Dr. Simpson's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Simpson is licensed in Illinois.
Specialties and state licenses
- Hospitalist, IllinoisPrimary
Hospitalists near Dr. Simpson
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephanie Lynn Simpson billed Medicare for 1,174 services in 2024
CMS data shows 1,174 Medicare services from Dr. Simpson across 6 procedure codes in 2024, for 355 Medicare patients. Medicare paid $114,634 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Simpson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2542024: 1,1746%
Dr. Simpson compared with the Illinois median for hospitalists, 2024
- Dr. Simpson
- Illinois median
- Medicare services
- 1,174vs 5432.2 times
- Medicare patients
- 355vs 24247% above
- Part D claims
- 303vs 535.7 times
Medians across 1,248 hospitalists in Illinois with Dmand AI profiles that report each measure.
Dr. Simpson's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephanie Lynn Simpson treated 355 Medicare patients in 2024, average age 77
CMS counts 355 Medicare patients who saw Dr. Simpson in 2024. The largest group is 75 to 84, with 134 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.66, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Simpson's median patient age at 72, with 49% women.
Dr. Simpson's Medicare patients by age, 2024
Dr. Simpson's Medicare patients by sex, 2024
- Women19856%
- Men15744%
Chronic conditions among Dr. Simpson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Heart failure61%
- Ischemic heart disease61%
- Chronic kidney disease60%
- Diabetes46%
- Atrial fibrillation45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simpson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephanie Lynn Simpson wrote 490 Medicare Part D claims in 2024
In 2024, Dr. Simpson wrote 490 Medicare Part D claims for 240 patients. 88% of them were for generic drugs. CMS names the drug for 303 of them, across 16 drugs with 11 or more claims each, at $19,680 in total drug cost. In 2023, CMS named 373 claims across 19 drugs.
Dr. Simpson's Part D claims by kind of drug, 2024
- Generic433 claims88%
- Brand-name and other57 claims12%
Dr. Simpson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Simpson's Part D claims, 2024
- Opioids3%14 of 490 claims
- Antibiotics20%96 of 490 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3732024: 30319%
Drugs named by CMS: 16 in 2024, 19 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Stephanie Lynn Simpson scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Simpson for performance year 2024, reported as part of a group. Dr. Simpson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Simpson's MIPS scores, performance year 2024
- 100of 100Final score
- 96.6of 100Quality
- 40of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Stephanie Lynn Simpson received $29 in industry payments in 2016
CMS Open Payments shows 2 general payments to Dr. Simpson from 2 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. Pacira Pharmaceuticals Incorporated paid the most, $18.
Companies that paid Dr. Simpson the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephanie Lynn Simpson graduated from Edward Via Col of Osteo Medicine-Virginia Campus
Dr. Simpson graduated from Edward Via Col of Osteo Medicine-Virginia Campus in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephanie Lynn Simpson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stephanie Lynn Simpson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stephanie Lynn Simpson's NPI number?
Dr. Stephanie Lynn Simpson's NPI number is 1598183378. It was assigned on March 31, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephanie Lynn Simpson?
Dr. Stephanie Lynn Simpson is a hospitalist in O'Fallon, Illinois. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Stephanie Lynn Simpson practice?
Dr. Simpson practices at 1 St Elizabeth Blvd, O'Fallon, IL 62269. Dr. Simpson's primary practice is HSHS St. Elizabeth's Hospital in O'Fallon, Illinois. Dmand AI also links Dr. Simpson to 1 hospital and 1 group practice or clinic.
What is Dr. Stephanie Lynn Simpson's office phone number?
The practice phone on file for Dr. Simpson is (217) 492-9651.
What is Dr. Stephanie Lynn Simpson's medical license number?
Dr. Simpson holds Illinois license 036157114.
Which hospitals is Dr. Stephanie Lynn Simpson affiliated with?
Dr. Simpson is affiliated with HSHS St. Elizabeth's Hospital. Dmand AI links Dr. Simpson to 1 more hospital.
What medical group is Dr. Stephanie Lynn Simpson part of?
Dr. Simpson is linked to Vituity (formerly CEP America).
Does Dr. Stephanie Lynn Simpson accept Medicare?
Yes. CMS data shows Dr. Simpson billed Medicare for 1,174 services in 2024, and Dr. Simpson accepts Medicare assignment.
What is Dr. Stephanie Lynn Simpson's MIPS score?
Dr. Simpson's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Stephanie Lynn Simpson see?
CMS counts 355 Medicare patients who saw Dr. Simpson in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Stephanie Lynn Simpson bill to Medicare?
In 2024, Dr. Simpson's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
Where did Dr. Stephanie Lynn Simpson go to medical school?
Dr. Simpson graduated from Edward Via Col of Osteo Medicine-Virginia Campus in 2014.
What drugs does Dr. Stephanie Lynn Simpson prescribe most?
In 2024 Medicare Part D data, Dr. Simpson's most prescribed drugs by claims were Furosemide, Cefdinir and Metoprolol Succinate.
Has Dr. Stephanie Lynn Simpson received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Dr. Simpson from 2 companies from 2016 to 2016. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Dr. Stephanie Lynn Simpson been practicing?
Dr. Simpson graduated from medical school in 2014, 12 years ago.
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