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

Daniel Irwin

Individual provider Family Medicine Physician · NPI 1033524681

Daniel Irwin is registered under Family Practice in Sioux City, Iowa. Graduated from Sanford School of Medicine of University of South Dakota in 2014, 12 years ago. Practices with Spencer Municipal Hospital, a 95-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
12
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
IA
In the registry since
2014
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Practice location Address checks out

2501 Pierce St
Sioux City, IA 51104-3725 Not confirmed with CMS for 12 years — call before visiting
Phone: (712) 294-5000
Fax: (712) 294-5091
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence R-10119 (IA)

Record details

NPI number1033524681
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 23, 2014
Last updated in NPPESJune 23, 2014

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesEMERGENCY MEDICINE
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 2014 (12 years in practice)
Group practice Spencer Municipal Hospital — 95 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 patients216
Services billed 258 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Spencer Municipal Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 95 clinicians in the practice; 12 are shown here.

Other providers in Sioux City