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

Michael A Nizzi, DO

Individual provider Surgery Physician · NPI 1700802055

Michael A Nizzi, DO practises General Surgery in Nampa, Idaho. Graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1991, 35 years ago. Practices with Saint Alphonsus Regional Medical Center Inc, a 673-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Idaho, Michigan and Oregon.

Years since qualifying
35
Trained at
Des Moines University of Osteopathic Medicine and Health Sciences
Licensed in
ID, MI, OR
In the registry since
2006
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4400 E Flamingo Ave Ste 200
Nampa, ID 83687-1128
Phone: (208) 302-2700
Fax: (208) 302-2725
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1221 Sixth St Ste 300, Traverse City, MI 49684-2360 — (231) 935-2400
  • 1050 Sw 3rd Ave Ste 3201, Ontario, OR 97914-2193 — (541) 881-2330

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 4561673 (ID)
Surgery Physician Taxonomy 208600000X · Licence DO228162 (OR)
Surgery Physician Taxonomy 208600000X · Licence 5101012308 (MI)

Record details

NPI number1700802055
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESMarch 24, 2026
Certification dateMarch 24, 2026

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolDES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES
Graduated 1991 (35 years in practice)
Group practice Saint Alphonsus Regional Medical Center Inc — 673 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 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.

Upper gastrointestinal (GI) endoscopy for acid reflux 14 times · 46th percentile
Colonoscopy 1–10 times
Hernia repair (minimally invasive) 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 patients140
Services billed 242 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.

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 $159 2 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 Saint Alphonsus Regional Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 673 clinicians in the practice; 12 are shown here.

Other providers in Nampa