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

Charles Michael Knudson, MD

Individual provider Blood Banking & Transfusion Medicine Physician · NPI 1144218926

Charles Michael Knudson, MD practises Pathology in Iowa City, Iowa. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1992, 34 years ago. Practices with State University of Iowa, a 1,885-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
34
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
IA
In the registry since
2005
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

200 Hawkins Dr
Iowa City, IA 52242-1009
Phone: (319) 335-8147
Fax: (319) 335-8453
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 500 E Market St, Iowa City, IA 52245-2633 — (319) 339-3551

Specialties & licences

Blood Banking & Transfusion Medicine Physician (primary) Taxonomy 207ZB0001X · Licence MD-32575 (IA)

Record details

NPI number1144218926
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 6, 2005
Last updated in NPPESDecember 16, 2025
Certification dateDecember 16, 2025

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice State University Of Iowa — 1885 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients139
Services billed 230 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at State University of Iowa

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1885 clinicians in the practice; 12 are shown here.

Other providers in Iowa City