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

John Cromwell, MD

Individual provider Colon & Rectal Surgery Physician · NPI 1174535504

John Cromwell, MD is registered under Colorectal Surgery (Proctology) in Iowa City, Iowa. Graduated from University of Minnesota, Duluth School of Medicine in 1994, 32 years ago. Practices with State University of Iowa, a 1,885-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida and Iowa.

Years since qualifying
32
Trained at
University of Minnesota, Duluth School of Medicine
Licensed in
FL, IA
In the registry since
2006
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

200 Hawkins Dr
Iowa City, IA 52242-1007
Phone: (319) 384-5196
Fax: (319) 356-8378
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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

Colon & Rectal Surgery Physician (primary) Taxonomy 208C00000X · Licence 38721 (IA)
Colon & Rectal Surgery Physician Taxonomy 208C00000X · Licence ME88057 (FL)
Surgery Physician Taxonomy 208600000X · Licence 38721 (IA)

Record details

NPI number1174535504
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 13, 2006
Last updated in NPPESJanuary 26, 2026
Certification dateJanuary 26, 2026

Medicare enrollment

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

Medicare specialtyCOLORECTAL SURGERY (PROCTOLOGY)
Also practisesGENERAL SURGERY
Medical schoolUNIVERSITY OF MINNESOTA, DULUTH SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice State University Of Iowa — 1885 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients57
Services billed 87 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

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