Arthur Oscar Sieron, M.D.
Emergency Medicine Physician · Saginaw, MI
Arthur Oscar Sieron, M.D. is an emergency medicine physician with a practice address in Saginaw, Michigan, and NPI 1477230555, issued on Jun 30, 2023. Check the license (Michigan 4351051111, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Arthur Oscar Sieron
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 4351051111 MI
036178159 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Houghton Avenue, Saginaw, MI 48602
- Phone
- (989) 746-7500
- Enumerated
- Jun 30, 2023
- Record last updated
- Aug 4, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,083 in Michigan → Look up another NPI →
Also registered at 1000 Houghton Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Arthur Oscar Sieron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4351051111Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average emergency medicine physician in 2024
40 Medicare Part D claims for 28 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Arthur Oscar Sieron among 3,083 emergency medicine physician records in Michigan
Arthur Oscar Sieron, M.D. is one of 3,083 emergency medicine physician records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 90% of them.
- NPI issued2023 · 90% of these records are older, 7% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 53% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
182 emergency medicine physician records list a practice address in Saginaw
They are 182 of the 6,008 NPPES records with a practice address in Saginaw, and 3,083 emergency medicine physician records in Michigan.
All 3,083 in Michigan → Every provider in Saginaw → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Mary Arvanitis, DOSaginaw, MI 486021295722841
- Andrew Bazakis, M.D.Saginaw, MI 486021114914603
- Kevin Carnahan, DOSaginaw, MI 486021124093174
- Kathleen Cowling, DOSaginaw, MI 486021790772283
- Matthew Deibel, MDSaginaw, MI 486021427019652
- Frederick Dunham, MDSaginaw, MI 486021598799082
- Allison Gormley, DOSaginaw, MI 486021912955014
- Kirsten Guenther, M.D.Saginaw, MI 486021861506156
Common questions
What is Arthur Oscar Sieron, M.D.'s NPI number?
Arthur Oscar Sieron, M.D.'s National Provider Identifier (NPI) is 1477230555, issued on Jun 30, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Arthur Oscar Sieron, M.D. located?
The NPPES record lists a practice address at 1000 Houghton Avenue, Saginaw, MI, 48602. Phone: (989) 746-7500. Providers update this record themselves, so call before visiting.
How can I verify Arthur Oscar Sieron, M.D.'s license?
NPPES lists Michigan license number 4351051111, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Arthur Oscar Sieron, M.D. prescribe under Medicare Part D?
In 2024, Arthur Oscar Sieron, M.D. had 40 Medicare Part D claims for 28 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.