Jennifer Castelbuono, MD

Medicare activity in 2024

Official CMS public-use data for Jennifer Castelbuono, 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.

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 blood pressure75%
• High cholesterol75%
• Chronic kidney disease54%
• Ischemic heart disease46%

Hospitals where Jennifer Castelbuono works

Medicare's Facility Affiliation Data lists Jennifer Castelbuono 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.

• Lakeland Hospital, St JosephSt Joseph, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230021

Practice locations

Addresses where Jennifer Castelbuono is enrolled with Medicare (CMS data updated October 2, 2026).

• 1234 Napier Ave, Corewell Health Lakeland HospitalsSaint Joseph, MI 49085 (269) 983‑8300
• 31 N Saint Joseph AveNiles, MI 49120 (269) 683‑5510

Group practices

Medicare enrollment lists Jennifer Castelbuono as a member of this group (CMS data updated October 2, 2026).

• Lakeland Hospitals at Niles and St Joseph Inc131 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Michigan →

Other anesthesiologists in Saint Joseph

Clinicians with the same Medicare primary specialty in Saint Joseph, MI — not a recommendation.

• Roberto Cuadra, MD
• Linda M. McBryde, MD
• Diego P. Betita, MD
• Robert C. Thomas Jr., MD
• James G. Sisamis Ii, MD
• Ryan M. Dudley, DO
• Adam Zamzow
• Bernardito F. Servillas, MD

All anesthesiologists in Saint Joseph →

Other clinicians in Lakeland Hospitals at Niles and St Joseph Inc

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

• Eric J. Weiler, MD
• Sarah M. Lowe, MD
• William Mackin, MD
• Kathryn M. Lutz
• Alexander B. George, PA
• Lindsey Clark, 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