IndividualActive
John Michalak, M.D.
NPI 1497727663 · Hematology & Oncology Physician · Sioux City, IA
Provider details
- NPI number
- 1497727663
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 21969 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Practice location
230 Nebraska St
Sioux City, IA 51101-1733
Phone: (712) 252-0088
Fax: (712) 252-5271
Approximate (ZIP-level) locationGet directions
Mailing address
230 Nebraska St
Sioux City, IA 51101-1733
Registry dates
- Enumerated
- 2006-02-02
- Last updated
- 2007-07-08
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.