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

Thomas J Brefeld, MD

Individual provider Hospitalist Physician · NPI 1699885871

Thomas J Brefeld, MD is a Hospitalist in Rockford, Illinois. Graduated from Rush Medical College of Rush University in 1998, 28 years ago. Practices with Rockford Health Physicians, a 521-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
28
Trained at
Rush Medical College of Rush University
Licensed in
IL
In the registry since
2006
Specialties on file
2
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

8201 E Riverside Blvd
Rockford, IL 61114-2300
Phone: (815) 971-4066
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 875 S Route 31, Crystal Lake, IL 60014-8190 — (779) 220-5500
  • 901 Grant St, Harvard, IL 60033-1821 — (815) 943-5431
  • 2400 N Rockton Ave, Rockford, IL 61103-3655 — (815) 971-4025

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036104961 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 036104961 (IL)

Record details

NPI number1699885871
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESMay 23, 2025
Certification dateMay 13, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 1998 (28 years in practice)
Group practice Rockford Health Physicians — 521 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 patients139
Services billed 372 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 $147 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Javon Bea Hospital Hospital · Rockford, IL

Colleagues at Rockford Health Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 521 clinicians in the practice; 12 are shown here.

Other providers in Rockford