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

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1922166511

Robert A Nonn, MD is registered under Pulmonary Disease in Neenah, Wisconsin. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1992, 34 years ago. Practices with Fox Valley Pulmonary Medicine SC, an 11-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
34
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
WI
In the registry since
2006
Specialties on file
5
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 Theda Clark Medical Plz Ste 480
Neenah, WI 54956-2721
Phone: (920) 729-0608
Fax: (920) 729-2902
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 39988-020 (WI)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 39988-020 (WI)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 39988 (WI)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 39988 (WI)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 39988 (WI)

Record details

NPI number1922166511
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 5, 2006
Last updated in NPPESJune 22, 2017

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE, SLEEP MEDICINE
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Fox Valley Pulmonary Medicine Sc — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients396
Services billed 718 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 $103 1 payment · 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.

Colleagues at Fox Valley Pulmonary Medicine SC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 11 clinicians in the practice; 9 are shown here.

Other providers in Neenah