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Contact Information

NICKOLAS S DEMARK, DO
1229 C AVE E
OSKALOOSA, IA52577-4298
 Phone: 641-672-3100
 Fax:
 Website:
 

Specialty

Taxonomy Code Specialty Code Provider Type

Hospice and Palliative Medicine

207RH0002X 11 Physician/Internal Medicine
 

Hospitalist

208M00000X
 

Internal Medicine

207R00000X 11 Physician/Internal Medicine
Indicates primary specialty

NPI Profile & details for NICKOLAS S DEMARK · (Male)

NPI Number 1114214004
Status Active
Credentials DO (Doctor of Osteopathic)
Entity Individual
Enumeration date 06/30/2011
Last updated 09/11/2025 - About 9 months ago
Sole proprietor 1 No
Identifiers
  • IA License # DO-06639
  • MI License # 5101019580
  • WI License # 62482
Hospital affiliation(s)
  • ST MARYS HSPTL MED CTR - (Acute Care)
    1726 SHAWANO AVE
    GREEN BAY, WI 54303
  • ST NICHOLAS HOSPITAL - (Acute Care)
    3100 SUPERIOR AVE
    SHEBOYGAN, WI 53081
  • ST VINCENT HSPTL - (Acute Care)
    835 S VAN BUREN ST
    GREEN BAY, WI 54301
1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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