John R Gandionco, MD
5.0(10 reviews)
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Office Hours

  • Mon:8:00am - 7:00pm
  • Tue:7:00am - 4:00pm
  • Wed:7:30am - 5:00pm
  • Thu:8:00am - 5:00pm
  • Fri:8:00am - 3:00pm

John R Gandionco, MD
Internal Medicine Physician - General

Highlights

  • Board Certified

Biography

Why I chose to pursue a career in healthcare:To help people obtain the health and well-being they want in order to pursue the lifestyle they want to leadWhat I want my patients to know about me:I want… Read more ›

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John Gandionco…

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Summary

Provider Training

UniversityDegreeFocusGraduated
Renaissance School of Medicine at Stony Brook UniversityBachelors DegreeOther1988
SUNY @ Downstate Medical CenterDoctorateOther1992

InstitutionFocusYear
Residency - Winthrop University HospitalInternal Medicine1995
Internship - Winthrop University HospitalInternal Medicine1993

CertificationCert. BodyYear
Internal medicineInternal MedicineNot Specified

Photos

Provider Profile 0

Specialties

Languages Spoken
English, Spanish
Medical Specialties
  • Internal Medicine Physician

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5.0
Number of Reviews: 10
Most Recent Review: 04/05/2026
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Office & Staff Evaluation Not rated

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere Not rated
Handling of Billing Matters Not rated
Average Wait Time Not Rated

Provider Evaluation 5.0

Willingness to Spend Time with You 5.0
Listening Skills 5.0
Clear Explanations 5.0
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Verified Patient

“John Gandionco...”

John Gandionco

Anonymous 04/05/2026
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Verified Patient

“I think he is the best doctor t...”

I think he is the best doctor to have !

Anonymous 02/05/2026
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Verified Patient

“Excellent provider...”

Excellent provider

Anonymous 01/13/2026
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Verified Patient

“Dr was very attentive to my ques...”

Dr was very attentive to my questions or concerns.

Anonymous 09/12/2025
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Verified Patient

“Excellent....”

Excellent.

Anonymous 08/13/2025
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Verified Patient

“Very Happy with Dr.Gandionco, he...”

Very Happy with Dr.Gandionco, he always makes time to answer any questions about my health that I have

Anonymous 02/08/2026
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Verified Patient

“Very respectful, very understand...”

Very respectful, very understanding, very kind!

Anonymous 01/16/2026
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Verified Patient

“No further comments....”

No further comments.

Anonymous 09/12/2025
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Verified Patient

“Dr. Gandionco is a great doctor!...”

Dr. Gandionco is a great doctor!

Anonymous 08/15/2025
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Verified Patient

“Dr Gandionco is great he takes h...”

Dr Gandionco is great he takes his time with you and he listens to you.

Anonymous 05/24/2025

Locations

Affiliated Practices

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Patricia Margetas, DO   -   Internal Medicine Physician
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Christopher Due, MD, FACP   -   Internal Medicine Physician
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Procedures & Services

Procedures & Treatments Offered

    Commonly Prescribed Medications

    John R Gandionco, MD has not yet listed the medications that he commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    John R Gandionco, MD has not yet specified the insurance plans he accepts.