William J. Yost, MD
Internal Medicine Physician · Des Moines, IA
William J. Yost, MD is an internal medicine physician with a practice address in Des Moines, Iowa, and NPI 1841277910, issued on Dec 29, 2005. Check the license (Iowa 29440, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- William J. Yost
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 29440 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Pleasant St, Des Moines, IA 50309
- Phone
- (515) 241-8223
- Enumerated
- Dec 29, 2005
- Record last updated
- Nov 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (515) 241-4313
- Medicaid IDs
- 0122317 IA
1841277910 IA - Medicare enrollment
- Enrolled (PECOS I20060412000115); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 1221 Pleasant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William J. Yost in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 29440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
85 Medicare Part D claims for 14 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydrochlorothiazide13 claims
- Furosemide11 claims
- Metoprolol Succinate11 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.
One hospital affiliation
- Broadlawns Medical CenterDes Moines, IA · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William J. Yost among 871 internal medicine physician records in Iowa
William J. Yost, MD is one of 871 internal medicine physician records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated1988 · median 2008 among the 386 with a school on file
- Record last updated2020 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
226 internal medicine physician records list a practice address in Des Moines
They are 226 of the 5,538 NPPES records with a practice address in Des Moines, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Des Moines → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steven Bunge, MDDes Moines, IA 503091568460012
- John Carstensen, MDDes Moines, IA 503091851378012
- Christopher Covert, DODes Moines, IA 503091891772968
- Steven Craig, MDDes Moines, IA 503091316924491
- Sean Cunningham, M.D.Des Moines, IA 503091023001559
- Carole Frier, D.O.Des Moines, IA 503091730151374
- Richard Gloor, M.D.Des Moines, IA 503091770577769
- Todd Jensen, M.D.Des Moines, IA 503091952396616
Common questions
What is William J. Yost, MD's NPI number?
William J. Yost, MD's National Provider Identifier (NPI) is 1841277910, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William J. Yost, MD located?
The NPPES record lists a practice address at 1221 Pleasant St, Des Moines, IA, 50309. Phone: (515) 241-8223. Providers update this record themselves, so call before visiting.
How can I verify William J. Yost, MD's license?
NPPES lists Iowa license number 29440, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William J. Yost, MD prescribe under Medicare Part D?
In 2024, William J. Yost, MD had 85 Medicare Part D claims for 14 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.