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

Mr. Robert G. Trapp, MD

Individual provider Rheumatology Physician · NPI 1841363751

Mr. Robert G. Trapp, MD practises Rheumatology in Springfield, Illinois. Qualified in 1974, 52 years ago. Practices with Providence Health and Services Washington, a 480-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
52
Licensed in
IL
In the registry since
2006
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

800 N 1st St
Springfield, IL 62702-3719
Phone: (217) 528-7541
Fax: (217) 522-4560
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 036054588 (IL)

Record details

NPI number1841363751
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 16, 2006
Last updated in NPPESMay 19, 2020
Certification dateMay 19, 2020

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Medical schoolOTHER
Graduated 1974 (52 years in practice)
Group practice Providence Health And Services Washington — 480 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 patients247
Average patient age75

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 $710 31 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.

  • Providence Centralia Hospital Hospital · Centralia, WA

Colleagues at Providence Health and Services Washington

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 480 clinicians in the practice; 12 are shown here.

Other providers in Springfield