Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Jaroslaw P Siwik, MD

Individual provider Internal Medicine Physician · NPI 1043280522

Jaroslaw P Siwik, MD is an Internal Medicine in Portage, Michigan. Graduated from Wayne State University School of Medicine in 1997, 29 years ago. Practices with Bronson Methodist Hospital, a 719-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
29
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2600 W Centre Ave Bronson Internal Medicine Associates
Portage, MI 49024-4828
Phone: (269) 324-4141
Fax: (269) 324-2020
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301070284 (MI)

Record details

NPI number1043280522
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 25, 2006
Last updated in NPPESNovember 27, 2023
Certification dateOctober 12, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Bronson Methodist Hospital — 719 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Portage