Donald John Siwek, M.D.
Anesthesiology Physician · Royal Oak, MI
Donald John Siwek, M.D. is an anesthesiology physician with a practice address in Royal Oak, Michigan, and NPI 1760439053, issued on May 30, 2006. Check the license (Michigan 4301061922, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Donald John Siwek
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 4301061922 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3601 W 13 Mile RD, Royal Oak, MI 48073
- Phone
- (248) 898-1905
- Enumerated
- May 30, 2006
- Record last updated
- Aug 17, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (248) 898-1032
- Medicare enrollment
- Enrolled (PECOS I20240213000055); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,720 in Michigan → Look up another NPI →
Also registered at 3601 W 13 Mile RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Farah Aboufakhr, MDAnesthesiology Physician1093409260
- Mohamad Aboumourad, DOInternal Medicine Physician1669225637
Verify Donald John Siwek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301061922Check 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 anesthesiology physician in 2024
71 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Azithromycin14 claims
- Methylprednisolone11 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.
Industry payments in 2024: $101.19
1 payment: food and beverage; the largest payer was Avanos Medical. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Valiant Anesthesia Associates, PLLCDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald John Siwek among 1,720 anesthesiology physician records in Michigan
Donald John Siwek, M.D. is one of 1,720 anesthesiology physician records with a practice address in Michigan. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 55% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1993 · median 2006 among the 1,126 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
88 anesthesiology physician records list a practice address in Royal Oak
They are 88 of the 3,887 NPPES records with a practice address in Royal Oak, and 1,720 anesthesiology physician records in Michigan.
All 1,720 in Michigan → Every provider in Royal Oak → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Sabah Acho, MDRoyal Oak, MI 480731902871700
- Jeffrey Bellefleur, MDRoyal Oak, MI 480731134193261
- Deane Harimoto, MDRoyal Oak, MI 480731467425595
- Susan Iovan, MDRoyal Oak, MI 480731790756310
- Roman Magidenko, MDRoyal Oak, MI 480731124090428
- Michael McCue, MDRoyal Oak, MI 480731346214368
- Robert Murray, MDRoyal Oak, MI 480731295709467
- Paul O Leary, MDRoyal Oak, MI 480731073588430
Common questions
What is Donald John Siwek, M.D.'s NPI number?
Donald John Siwek, M.D.'s National Provider Identifier (NPI) is 1760439053, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donald John Siwek, M.D. located?
The NPPES record lists a practice address at 3601 W 13 Mile RD, Royal Oak, MI, 48073. Phone: (248) 898-1905. Providers update this record themselves, so call before visiting.
How can I verify Donald John Siwek, M.D.'s license?
NPPES lists Michigan license number 4301061922, 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 Donald John Siwek, M.D. prescribe under Medicare Part D?
In 2024, Donald John Siwek, M.D. had 71 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.