Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Gregory G Nowak, MD

Individual provider Internal Medicine Physician · NPI 1376516625

Dr. Gregory G Nowak, MD is registered under Cardiovascular Disease (Cardiology) in Rockford, Illinois. Qualified in 1987, 39 years ago. Practices with Rockford Health Physicians, a 521-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
39
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

2350 N Rockton Ave
Rockford, IL 61103-3600
Phone: (815) 971-2200
Fax: (815) 971-9097
Show map & directions

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

Additional practice locations (2)

  • 1045 W Stephenson St, Freeport, IL 61032-4864 — (815) 599-6000
  • 8201 E Riverside Blvd, Rockford, IL 61114-2300 — (815) 971-2200

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 036099837 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036099837 (IL)

Record details

NPI number1376516625
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 8, 2006
Last updated in NPPESMay 5, 2026
Certification dateMay 5, 2026

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Group practice Rockford Health Physicians — 521 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Pacemaker insertion or repair 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients2,932
Services billed 8,363 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Mercy Harvard Hospital Hospital · Harvard, IL · listed as Mercy Harvard Hospital Inc
  • Saint Anthony Medical Center Hospital · Rockford, IL
  • Javon Bea Hospital Hospital · Rockford, IL
  • Osf Saint Paul Medical Center Hospital · Mendota, IL
  • Uw Health 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