Anna M. Chojnacki, MD

Medicare activity in 2024

Official CMS public-use data for Anna M. Chojnacki, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Screening 3d breast mammography (77063)713 services
2. Screening mammography (77067)711 services
3. X-ray of chest, 2 views (71046)356 services
4. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)133 services
5. Limited ultrasound scan of 1 breast (76642)102 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High cholesterol73%
• High blood pressure71%
• Arthritis53%
• Anxiety30%
• Depression28%
• Diabetes27%

Hospitals where Anna M. Chojnacki works

Medicare's Facility Affiliation Data lists Anna M. Chojnacki at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Corewell Health Gerber HospitalFremont, MI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 231338
• Corewell Health Reed City HospitalReed City, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231323
• Lakeland Hospital, St JosephSt Joseph, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230021
• Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
• Spectrum Health United HospitalGreenville, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230035

Practice locations

Addresses where Anna M. Chojnacki is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 Michigan Ave NEGrand Rapids, MI 49503 (616) 363‑7272

Group practices

Medicare enrollment lists Anna M. Chojnacki as a member of this group (CMS data updated October 2, 2026).

• Advanced Radiology Services PC253 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Michigan →

Other radiologists in Grand Rapids

Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.

• Jason H. Griffith, DO
• Todd Mulderink, MD
• Robert J. Oostveen, MD
• Stefan E. Margiewicz, MD
• Michael J. Votruba, MD
• Jamie L. Frost, DO
• Biren A. Shah, MD
• Jon Eric Notarnicola, MD

All radiologists in Grand Rapids →

Other clinicians in Advanced Radiology Services PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Jason H. Griffith, DO
• Todd Mulderink, MD
• Brian Fedeson, MD
• Cassandra Sams, MD
• William A. Slater Jr., MD
• Justin Newman, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians