Summary

Dr. Gretes graduated from the Duke University School of Medicine in 1972. He works in Gloucester, VA and 1 other location and specializes in Nephrology and Internal Medicine. Dr. Gretes is affiliated with Riverside Walter Reed Hospital.

Quick Facts

  • 4.5
  • 54 years of experience
  • 22 insurance plans accepted
  • speaks English
  • University Of Virginia Health System
  • 5 written reviews
  • 2 specialties
  • 10 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. John Constantine Gretes has 2 locations

Riverside Urology Specialists Gloucester

7552 Hospital Dr Ste 302Gloucester, VA 23061
Mon8:30 am - 4:30 pm
Tue8:30 am - 4:30 pm
Wed8:30 am - 4:30 pm
Thu8:30 am - 4:30 pm
Fri8:30 am - 4:30 pm
SatClosed
SunClosed

Riverside Walter Reed Hospital

7547 Medical DrGloucester, VA 23061

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Dr. John Constantine Gretes, MDDr. Kelley Zacharias Allison, MDDr. Sudip Ghimire, MDDr. Olayiwola Babajide Ayodeji, MD
NephrologyDiagnostic RadiologyNephrologyNephrology
Accepts New Patients Accepts New Patients
4.5 
4.6 
54 Years of Experience 28 Years of Experience 25 Years of Experience 47 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks Spanish, Chinese Speaks English Speaks English
Gloucester , VARichmond , VANewport News , VAHampton , VA
Med School: Duke University School Of Medicine Med School: Virginia Commonwealth University School Of Medicine Med School: Manipal College Of Medical Sciences (Mcoms) Med School: University Of Lagos College Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Constantine Gretes

  • AARP
  • Aetna
  • Aetna - Medicare
  • Aetna Better Health
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • CHAMPVA
  • Humana
  • Humana - Medicare (Advantage HMO)
  • Medica
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Molina Healthcare
  • Molina Healthcare - Medicaid (Managed)
  • Optima Health
  • State Farm
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - Medicare (Advantage HMO)

Medical Specialties

Dr. John Constantine Gretes has the following 2 specialties

Specialty Expertise

Dr. John Constantine Gretes has the following 10 areas of expertise

  • Acute Renal Failure (Acute Kidney Failure)
  • Chronic Kidney Disease (CKD)
  • Chronic Renal Disease
  • Dialysis
  • End Stage Renal Disease (ESRD)
  • Internal Medicine
  • Kidney Biopsy
  • Peritoneal Dialysis
  • Physical Rehabilitation
  • Urinalysis

Certifications, License, & Education

54 Years Experience

MEDICAL LICENSE

Medical Doctor, Virginia, 2026, Active

EDUCATION & TRAINING

Residency

University Of Virginia Health System

Medical School

Duke University School Of MedicineGraduated in 1972

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Frequently Asked Questions

Is Dr. John Gretes accepting new patients?
Dr. John Gretes has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. John Gretes affiliated with?
Dr. John Gretes is affiliated with Riverside Walter Reed Hospital.
Where is Dr. John Gretes's office located?
Dr. John Gretes's office is located at 7552 Hospital Dr Ste 302, Gloucester, VA, 23061.
Does Dr. John Gretes accept virtual/telehealth appointments?
Dr. John Gretes has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. John Gretes speak?
Dr. John Gretes speaks English.

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