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

Jon A Peacock, MD

Individual provider Cardiovascular Disease Physician · NPI 1275507071

Jon A Peacock, MD is registered under Cardiovascular Disease (Cardiology) in Sioux City, Iowa. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 1987, 39 years ago. Practices with Northwest Iowa Hospital Corporation, a 132-clinician group and accepts Medicare assignment. Licensed in Iowa, Nebraska and South Dakota.

Years since qualifying
39
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
IA, NE, SD
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

5885 Sunnybrook Dr Ste L-200
Sioux City, IA 51106-4203 Not confirmed with CMS for 11 years — call before visiting
Phone: (712) 239-4702
Fax: (712) 224-5898
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence MD-31117 (IA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 20074 (NE)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 4330 (SD)

Record details

NPI number1275507071
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 16, 2006
Last updated in NPPESOctober 15, 2015

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 1987 (39 years in practice)
Group practice Northwest Iowa Hospital Corporation — 132 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 patients1,491
Services billed 5,265 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $400 10 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Northwest Iowa Hospital Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 132 clinicians in the practice; 12 are shown here.

Other providers in Sioux City