Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Pak Ho Au, MD

Individual provider Hospitalist Physician · NPI 1972120814

Pak Ho Au, MD is a Hospitalist Physician in Chicago, Illinois. Works from 2 locations. Licensed in Illinois and Missouri.

Licensed in
IL, MO
In the registry since
2020
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

676 N Saint Clair St Ste 940
Chicago, IL 60611-2945
Phone: (312) 926-8358
Fax: (312) 926-9630
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 645 N Michigan Ave Ste 900, Chicago, IL 60611-2823 — (312) 926-9877

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 036170835 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 2023008810 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2023008810 (MO)

Record details

NPI number1972120814
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 26, 2020
Last updated in NPPESOctober 13, 2026
Certification dateOctober 13, 2026

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients27
Services billed 62 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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