Benjamin F. Gruenbaum, MD

Medicare activity in 2024

Official CMS public-use data for Benjamin F. Gruenbaum, 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. Anesthesia for extensive surgery on spine (00670)39 services
2. Insertion of artery tube for blood sampling or infusion through skin (36620)21 services
3. Anesthesia for other procedure on brain (00210)20 services
4. Ultrasonic guidance for blood vessel access (76937)14 services
5. Anesthesia for other procedure on upper abdomen (00790)12 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 blood pressure75%
• High cholesterol75%
• Arthritis58%
• Chronic kidney disease38%
• Ischemic heart disease36%
• Anxiety33%

Hospitals where Benjamin F. Gruenbaum works

Medicare's Facility Affiliation Data lists Benjamin F. Gruenbaum 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.

• Mayo ClinicJacksonville, FL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 100151

Practice locations

Addresses where Benjamin F. Gruenbaum is enrolled with Medicare (CMS data updated October 2, 2026).

• 4500 San Pablo Rd SJacksonville, FL 32224 (904) 953‑2000

Group practices

Medicare enrollment lists Benjamin F. Gruenbaum as a member of this group (CMS data updated October 2, 2026).

• Mayo Clinic Jacksonville1,615 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Florida →

Other anesthesiologists in Jacksonville

Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.

• Elird Bojaxhi, MD
• Stephen Aniskevich, MD
• Hong Liang, DO
• Robert L. McClain, MD
• David C. Koehler, MD
• John D. Cabral, MD
• Bai X. Chen, MD
• Joanna R. Runkle

All anesthesiologists in Jacksonville →

Other clinicians in Mayo Clinic Jacksonville

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

• Albert Attia, MD
• Shirley Govender, NP
• Elird Bojaxhi, MD
• Amen Yonas, MD
• Toufic A. Kachaamy, MD
• Brenna C. Smith, CNA

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