Gregory Todd Siegel, M.D.
Emergency Medicine Physician · Lake St Louis, MO
Gregory Todd Siegel, M.D. is an emergency medicine physician with a practice address in Lake St Louis, Missouri, and NPI 1740675594, issued on Mar 30, 2015. Check the license (Missouri 2022005665, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Gregory Todd Siegel
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 2022005665 MO
036.148091 IL
MD462234 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Medical Plz, Lake St Louis, MO 63367
- Phone
- (636) 625-5200
- Enumerated
- Mar 30, 2015
- Record last updated
- Nov 2, 2022
- Medicare enrollment
- Enrolled (PECOS I20190627000546); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 in Missouri → Look up another NPI →
Also registered at 100 Medical Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindsey AyoPhysical Therapist1952252033
- Robert Baronovic, PTPhysical Therapist1740010180
- Montacer Belfancha, NPNurse Practitioner1639914609
- Audrey Bolden, NPNurse Practitioner1316455959
- Vincent Boston, MDEmergency Medicine Physician1134572340
- Amanda Bratton, RD, LDMetabolic Nutrition Registered Dietitian1710252440
Verify Gregory Todd Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2022005665Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average emergency medicine physician in 2024
467 Medicare Part D claims for 315 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 101 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen83 claims
- Prednisone68 claims
- Ondansetron Odt41 claims
- Cephalexin27 claims
- Azithromycin25 claims
- Amoxicillin-Clavulanate Potass23 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): 89.6 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
- Alton-Griffin Emergency Group PCAlton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Todd Siegel among 1,405 emergency medicine physician records in Missouri
Gregory Todd Siegel, M.D. is one of 1,405 emergency medicine physician records with a practice address in Missouri. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 66% of them.
- NPI issued2015 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2015 · median 2012 among the 808 with a school on file
- Record last updated2022 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 emergency medicine physician records list a practice address in Lake St Louis
They are 4 of the 264 NPPES records with a practice address in Lake St Louis, and 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Lake St Louis → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Vincent Boston, MDLake St Louis, MO 633671134572340
- Joshua Harkless, MDLake St Louis, MO 633671033783717
- Stanton Schiller, MDLake St Louis, MO 633671962575183
- Victor Bailey, DOO Fallon, MO 633681760518336
- Randi Becker, MDO Fallon, MO 633681235392788
- Leo Hsu, MDO Fallon, MO 633681215965702
- Nancy Niemann Royer, MDO Fallon, MO 633681326094145
- Shirin Pinto, MDDardenne Prairie, MO 633681134102262
Common questions
What is Gregory Todd Siegel, M.D.'s NPI number?
Gregory Todd Siegel, M.D.'s National Provider Identifier (NPI) is 1740675594, issued on Mar 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Todd Siegel, M.D. located?
The NPPES record lists a practice address at 100 Medical Plz, Lake St Louis, MO, 63367. Phone: (636) 625-5200. Providers update this record themselves, so call before visiting.
How can I verify Gregory Todd Siegel, M.D.'s license?
NPPES lists Missouri license number 2022005665, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Todd Siegel, M.D. prescribe under Medicare Part D?
In 2024, Gregory Todd Siegel, M.D. had 467 Medicare Part D claims for 315 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Gregory Todd Siegel, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.6 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.