Clinical Advocate — Z. George Grekos, MD
Clinical setting representing physician expertise

About Clinical Advocate

A Physician Who Has Seen It From the Inside.

We bring more than three decades of clinical experience — from the cardiac catheterization lab to the ICU — to the role of Board Certified Patient Advocate.

MD (Medical Doctor)

University of South Florida College of Medicine, 1990

Board Certified

Internal Medicine - 1994

Board Certified

Cardiovascular Disease (Cardiology) - 1997

Board Certified

Board Certified Patient Advocate - Current

Z. George Grekos, MD — Board Certified Patient Advocate

Z. George Grekos, MD

Board Certified Patient Advocate (BCPA)

Collier County, Florida

Experience

Dr. Z. George Grekos, MD is a retired cardiologist and internist with more than 30 years of clinical experience in Florida. Dr. Grekos earned his Doctor of Medicine degree from the University of South Florida College of Medicine in 1990, completed residency training in Internal Medicine, and went on to complete fellowship training in Cardiovascular Disease (Cardiology).

Throughout his clinical career, Dr. Grekos held hospital privileges at Naples Community Hospital and North Collier Hospital— spanning general internal medicine, intensive care, cardiac intensive care, and invasive cardiology — giving him direct, hands-on experience in the exact acute care hospital settings where patients and families most need an informed advocate. His clinical background encompasses the full spectrum of acute cardiovascular and cerebrovascular events, including stroke, heart failure, and atrial fibrillation, as well as complex multi-system illness. Dr. Grekos understands how acute care hospitals and ICUs function from the inside, and he knows how to navigate the complex relationships between physicians, nursing staff, specialists, and hospital administration.

After retiring from active practice, Dr. Grekos pursued and earned the Board Certified Patient Advocate (BCPA) credential — the nationally recognized standard for professional patient advocacy. He founded Clinical Advocate to put his clinical expertise to work for patients and families rather than institutions, providing the kind of informed, physician-level presence at the bedside that most families simply cannot access on their own — whether navigating a cardiac admission, a stroke hospitalization, or a complex internal medicine case in an acute care hospital.

Clinical Advocate serves private-pay patients and families throughout Collier County, including Naples and surrounding communities, exclusively within acute care hospital settings.

Education & Training

Doctor of Medicine (MD)

University of South Florida College of Medicine

1990

Residency — Internal Medicine

Graduate Medical Education

Fellowship — Cardiovascular Disease (Cardiology)

Graduate Medical Education

Board Certifications

Board Certified — Internal Medicine - 1994

American Board of Internal Medicine

Board Certified — Cardiovascular Disease - 1997

American Board of Internal Medicine

Board Certified Patient Advocate (BCPA) - Current

Patient Advocate Certification Board

Professional Membership

GNA Member Badge — Global Network of Advocates
Elise Stahl, RN

Elise Stahl, RN

ICU Nurse · Physicians Regional

“Every patient deserves someone in their corner who knows the system and genuinely cares about the outcome.”

Elise is an experienced RN and charge nurse who thrives on delivering the highest standard of care. She brings a rare combination of clinical precision and genuine warmth — creating a professional environment where patients and families feel supported and heard. At Clinical Advocate, Elise serves as a patient advocate, providing hands-on care coordination and patient support throughout the hospitalization. Outside of her advocacy work, she serves as an ICU RN and Clinical Coordinator at Physicians Regional Medical Center, and assists as a cardiovascular surgery nurse at Naples Community Hospital — the same two hospital systems where Clinical Advocate operates. Her deep familiarity with both facilities means she understands the systems, the staff, and the standards of care your loved one will encounter.

Credentials & Roles

  • RN, Registered Nurse
  • ICU Clinical Coordinator — Physicians Regional
  • Cardiovascular Surgery Nurse — Naples Community Hospital

Ready to Have a Physician in Your Corner?

Contact Clinical Advocate to discuss your family's situation and learn how physician-led patient advocacy can protect your loved one during a hospitalization.