William Cody Yarnell, MD
Emergency Medicine Physician · Springfield, IL
William Cody Yarnell, MD is an emergency medicine physician with a practice address in Springfield, Illinois, and NPI 1518541556, issued on May 6, 2021. Check the license (Illinois 125077635, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Cody Yarnell
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 125077635 IL
Self-reported in NPPES; status is on the state search - Practice location
- 701 N 1St St Ste D220, Springfield, IL 62702
- Phone
- (217) 545-3518
- Enumerated
- May 6, 2021
- Record last updated
- Mar 1, 2024
- Medicare enrollment
- Enrolled (PECOS I20240622000404); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 701 N 1St St Ste D220
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Cody Yarnell 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 125077635Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average emergency medicine physician in 2024
242 Medicare Part D claims for 153 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Ondansetron Odt31 claims
- Prednisone24 claims
- Cephalexin23 claims
- Amoxicillin-Clavulanate Potass22 claims
- Doxycycline Monohydrate16 claims
- Famotidine15 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.
Bills Medicare through 2 group practices
- Midwest Emergency Department Specialists LtdSpringfield, IL
- Passavant Memorial Area Hospital AssociationJacksonville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Cody Yarnell among 3,291 emergency medicine physician records in Illinois
William Cody Yarnell, MD is one of 3,291 emergency medicine physician records with a practice address in Illinois. 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 2021, is newer than 82% of them.
- NPI issued2021 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2021 · median 2012 among the 1,867 with a school on file
- Record last updated2024 · 47% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
126 emergency medicine physician records list a practice address in Springfield
They are 126 of the 4,997 NPPES records with a practice address in Springfield, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Springfield → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Dennis Adams, M.D.Springfield, IL 627021780739870
- Jonathan Dela Cruz, M.D.Springfield, IL 627021639335912
- Konstantin Denev, M.D.Springfield, IL 627021437131299
- Kristen Ferguson, M.D.Springfield, IL 627021750308227
- Dennis Goldberg, M.D.Springfield, IL 627021649499237
- David Griffen, M.D., PH.D.Springfield, IL 627021992749899
- Richard Jeisy, M.D.Springfield, IL 627021912218892
- Jason Kegg, M.D.Springfield, IL 627021083811764
Common questions
What is William Cody Yarnell, MD's NPI number?
William Cody Yarnell, MD's National Provider Identifier (NPI) is 1518541556, issued on May 6, 2021. An NPI identifies a provider in billing; it is not a license.
Where is William Cody Yarnell, MD located?
The NPPES record lists a practice address at 701 N 1St St Ste D220, Springfield, IL, 62702. Phone: (217) 545-3518. Providers update this record themselves, so call before visiting.
How can I verify William Cody Yarnell, MD's license?
NPPES lists Illinois license number 125077635, 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 William Cody Yarnell, MD prescribe under Medicare Part D?
In 2024, William Cody Yarnell, MD had 242 Medicare Part D claims for 153 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.