Mark-Victor Siwoski
Neurology Physician · Kalamazoo, MI
Mark-Victor Siwoski is a neurology physician with a practice address in Kalamazoo, Michigan, and NPI 1619363645, issued on Apr 7, 2015. Check the license (Michigan 4301503605, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Mark-Victor Siwoski
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 4301503605 MI
Self-reported in NPPES; status is on the state search - Practice location
- 601 John St Ste M-124, Kalamazoo, MI 49007
- Phone
- (269) 341-8855
- Enumerated
- Apr 7, 2015
- Record last updated
- Jan 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210106001600); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 739 in Michigan → Look up another NPI →
Also registered at 601 John St Ste M-124
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Madison AuitoPhysician Assistant1720933567
- Lindsay Bliss, D.O.Neurology Physician1477904332
- Hunter Brumblay, M.D.Neurological Surgery Physician1881716959
- John Bunka, DONeurology Physician1457611956
- Tatiana Burkholder, DNPAcute Care Nurse Practitioner1598306052
- Liane Ciotola, PA-CPhysician Assistant1013897768
Verify Mark-Victor Siwoski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301503605Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average neurology physician in 2024
1,726 Medicare Part D claims for 299 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Levetiracetam266 claims
- Lacosamide145 claims
- Lamotrigine145 claims
- Divalproex Sodium85 claims
- Topiramate79 claims
- Clobazam66 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: $77.67
4 payments; by number, the most common kind was food and beverage; the largest payer was SK Life Science, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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.
2 hospital affiliations
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 of 5 stars
- Bronson Battle Creek HospitalBattle Creek, MI · 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.
Mark-Victor Siwoski among 739 neurology physician records in Michigan
Mark-Victor Siwoski is one of 739 neurology 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 2015, is newer than 66% of them.
- NPI issued2015 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 2005 among the 501 with a school on file
- Record last updated2021 · 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 2084N0400X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Michigan
There are 739 neurology physician records in Michigan.
All 739 in Michigan → Every provider in Kalamazoo → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Martinson ArnanKalamazoo, MI 490071043410384
- Lindsay Bliss, D.O.Kalamazoo, MI 490071477904332
- John Bunka, DOKalamazoo, MI 490071457611956
- Michelle Crooks, MDKalamazoo, MI 490071366405490
- Dennis Jewett, MDKalamazoo, MI 490071740260330
- Steven MitchellKalamazoo, MI 490071710411509
- Yanny Phillips, DO, PHDKalamazoo, MI 490071073831681
- Frederick Sherburn, DOKalamazoo, MI 490071164959482
Common questions
What is Mark-Victor Siwoski's NPI number?
Mark-Victor Siwoski's National Provider Identifier (NPI) is 1619363645, issued on Apr 7, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mark-Victor Siwoski located?
The NPPES record lists a practice address at 601 John St Ste M-124, Kalamazoo, MI, 49007. Phone: (269) 341-8855. Providers update this record themselves, so call before visiting.
How can I verify Mark-Victor Siwoski's license?
NPPES lists Michigan license number 4301503605, 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 Mark-Victor Siwoski prescribe under Medicare Part D?
In 2024, Mark-Victor Siwoski had 1,726 Medicare Part D claims for 299 beneficiaries; the average among neurology physician prescribers was 1,370. 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.