Dr. Gretz graduated from the Eastern Virginia Medical School,Eastern Virginia Medical School in 1992. Dr. Gretz works in Plattsburgh, NY and 2 other locations and specializes in Gastroenterology and Internal Medicine. Dr. Gretz is affiliated with University Of Vermont Health Network Champlain Valley Physicians Hospital.


Years Experience: 27

Dr. Gretz's Specialties

Dr. Gretz's Education & Training

Medical School
Eastern Virginia Medical School,Eastern Virginia Medical School; Graduated 1992


  • Overall Rating

  • Rate
    Explains conditions & treatments

  • Rate
    Takes time to answer my questions

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    Provides follow-up as needed

Dr. Gretz's Accepted Insurance

Please verify insurance information directly with your doctor's office as it may change frequently.

Insurance Plans

  • Aetna Choice POS II
  • Aetna Elect Choice EPO
  • Aetna Managed Choice POS Open Access
  • Aetna NYC Community Plan
  • Aetna Signature Administrators PPO

Dr. Gretz's Office Information & Appointments

This physician has multiple office locations. See Office Information for details.


Champlain Valley Gastroenterology

164 Boynton Ave
Plattsburgh, NY 12901

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Tel: (518) 324-7920

Fax: Not Available

Practice Website: Not Available

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

M 8:30 AM - 5:00 PM
T 8:30 AM - 5:00 PM
W 8:30 AM - 5:00 PM
T 8:30 AM - 4:30 PM
F 8:30 AM - 4:30 PM
S Closed
S Closed

Other Physicians in Dr. Gretz's Practice