Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

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.

See every abbreviation used in this directory →

Practice location Address checks out

8201 E Riverside Blvd
Rockford, IL 61114-2300
Phone: (815) 971-4066
Show map & directions

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
Mailing address29624 Network Pl, Chicago, IL 60673-1296

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

Other providers in Rockford