Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Hadyn Michael Hollister, MD

Individual provider Surgical Critical Care Physician · NPI 1588957542

Dr. Hadyn Michael Hollister, MD is a General Surgery in Chicago, Illinois. Qualified in 2011, 15 years ago. Practices with Cook County, a 787-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
15
Licensed in
IL, WI
In the registry since
2011
Specialties on file
3
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

600 S Paulina St 527 Acfac
Chicago, IL 60612-3806
Phone: (312) 942-5495
Fax: (312) 942-5727
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1045 W Stephenson St, Freeport, IL 61032-4864 — (815) 599-6000
  • 8201 E Riverside Blvd, Rockford, IL 61114-2300 — (815) 971-7000
  • 1000 Mineral Point Ave, Janesville, WI 53548-2940 — (608) 756-6000

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 125059402 (IL)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence 036-140738 (IL)
Surgery Physician Taxonomy 208600000X · Licence 4777-320 (WI)

Record details

NPI number1588957542
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 25, 2011
Last updated in NPPESJuly 27, 2026
Certification dateJuly 27, 2026

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Cook County — 787 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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