Martin Zenni, MD

Medicare activity in 2024

Official CMS public-use data for Martin Zenni, 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. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)314 services
2. Routine electrocardiogram (ecg) using at least 12 leads with tracing (93005)210 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)156 services
4. Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)154 services
5. Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)132 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%
• Ischemic heart disease69%
• Arthritis58%
• Diabetes42%
• Heart failure36%

Hospitals where Martin Zenni works

Medicare's Facility Affiliation Data lists Martin Zenni 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.

• Shands JacksonvilleJacksonville, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100001
• Southeast Georgia Health System- Camden CampusSaint Marys, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 110146

Practice locations

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

• 2000 Dan Proctor DrSt Mary'S, GA 31558 (912) 729‑6821
• 201 B Lakeshore PointSt Mary'S, GA 31558 (912) 729‑6821
• 655 W 8th StJacksonville, FL 32209 (904) 244‑3273

Group practices

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

• University of Florida Jacksonville Physicians, Inc.910 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary

Find other Cardiovascular Disease (Cardiology) doctors in Georgia →

Other cardiologists in Georgia

Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.

• Travis Massengill
• Darshak Karia, MD
• Hassan S. Sayegh, MD
• Sheri D. Lopez, MD
• Abdul Razaq Adeniyi, MD
• George S. Staton, MD
• Michael S. Hardee, MD
• Dale P. Daly, MD

All cardiologists in Georgia →

Other clinicians in University of Florida Jacksonville Physicians, Inc.

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

• Taylor L. Brittan, MD
• Kathryn M. Eraso, MD
• Michael Timmel, MD
• Michele Golino, MD
• Mary K. Christiansen, MD
• Jennifer A. Crosby, PA

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