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

Troy B Shaffer, DO

Individual provider Emergency Medical Services (Emergency Medicine) Physician · NPI 1285665661

Troy B Shaffer, DO is an Emergency Medicine in McHenry, Illinois. Qualified in 1995, 31 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
31
Licensed in
IL
In the registry since
2006
Specialties on file
2
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.

See every abbreviation used in this directory →

Practice location Address checks out

4201 W Medical Center Dr
McHenry, IL 60050-8409
Phone: (815) 338-6600
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1045 W Stephenson St, Freeport, IL 61032-4864 — (815) 599-6000
  • 2400 N Rockton Ave, Rockford, IL 61103-3655 — (815) 971-5000
  • 8201 E Riverside Blvd, Rockford, IL 61114-2300 — (815) 971-3333

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036095672 (IL)
Emergency Medical Services (Emergency Medicine) Physician Taxonomy 207PE0004X · Licence 036095672 (IL)

Record details

NPI number1285665661
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 5, 2006
Last updated in NPPESApril 3, 2026
Certification dateApril 3, 2026
Mailing address4201 W Medical Center Dr, McHenry, IL 60050-8409

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Rockford Health Physicians — 521 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount