Summary

Dr. Nicholas Mezitis is an endocrinologist specializing in diabetes and metabolism, with additional expertise in internal medicine. He earned his medical degree from Medizinische Fakultaet Heidelberg Ruprecht-Karls-Universitaet Heidelberg and completed his residency at George Washington University Hospital. With 48 years of experience treating patients with hormone and metabolic disorders, Dr. Mezitis brings extensive knowledge to his practice. He is fluent in Chinese and German.

Dr. Mezitis is affiliated with OhioHealth Obleness Hospital, Marietta Memorial Hospital, and Selby General Hospital, with practice locations in Athens, Belpre, and Marietta, Ohio. He focuses on treating conditions such as vitamin D deficiency, type 2 diabetes, and diabetes in children and teens. His procedures include blood tests, complete blood counts, and thyroid-stimulating hormone testing. Patients rate Dr. Mezitis 4.1 out of 5 stars on average.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.1
  • 48 years of experience
  • speaks Chinese, German
  • George Washington University Hospital
  • 4 written reviews
  • 2 specialties
  • 14 areas of expertise
  • 3 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Nicholas Henry Elias Mezitis has 4 locations

Ohiohealth Physician Group Heritage College Diabetes And Endocrinology

75 Hospital Dr Ste 200Athens, OH 45701
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Marietta Memorial Hospital Department Of Pulmonary Medicine

803 Farson St Ste 100Belpre, OH 45714
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Marietta Memorial Hospital

401 Matthew StMarietta, OH 45750

Ohiohealth Obleness Hospital

55 Hospital DrAthens, OH 45701

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Dr. Nicholas Henry Elias Mezitis, MD
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Dr. Nicholas Henry Elias Mezitis, MDDr. Jason Timothy Weingart, MDDr. Slawomir Marius Fratczak, MDRegina Diane Reed
Endocrinology, Diabetes & MetabolismCardiovascular DiseaseInternal MedicineEndocrinology, Diabetes & Metabolism
Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
4.5 
48 Years of Experience 18 Years of Experience 41 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Chinese, German Speaks English Speaks Polish, Chinese, Arabic, English Speaks English
Athens , OHLancaster , OHLogan , OHCoolville , OH
Med School: Medizinische Fakultaet Heidelberg Ruprecht-Karls-Universitaet Heidelberg Med School: University Of Toledo College Of Medicine Med School: Akademia Medyczna
Current Profile
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Insurance Plans Accepted by Dr. Nicholas Henry Elias Mezitis

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Nicholas Henry Elias Mezitis has the following 2 specialties

Specialty Expertise

Dr. Nicholas Henry Elias Mezitis has the following 14 areas of expertise

  • Acromegaly
  • Addison Disease
  • Cushing Disease
  • Diabetes
  • Diabetes Mellitus, Type 1
  • Diabetes, Type 2
  • Fatigue
  • Gland Issues
  • Hormones
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Internal Medicine
  • Nutrition Therapy

Certifications, License, & Education

48 Years Experience

Dr. Nicholas Henry Elias Mezitis holds an expired medical license in the state of Ohio.

Medical License

Medical Doctor with an expired medical license in the state of Ohio that expired in 2026.

Education & Training

Residency

Completed their residency at George Washington University Hospital.

Medical School

Graduated from Medizinische Fakultaet Heidelberg Ruprecht-Karls-Universitaet Heidelberg in 1978.

NPI Number

Dr. Mezitis' NPI number is 1265527295.

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Frequently Asked Questions

How can I make an appointment with Dr. Nicholas Mezitis?
You can find contact information for Dr. Nicholas Mezitis here on Vitals.
Which hospitals is Dr. Nicholas Mezitis affiliated with?
Dr. Nicholas Mezitis is affiliated with Ohiohealth Obleness Hospital, Marietta Memorial Hospital, and Selby General Hospital.
Does Dr. Nicholas Mezitis accept my insurance?
You can see the insurance plans that Dr. Nicholas Mezitis accepts on their Vitals profile.
Is Dr. Nicholas Mezitis accepting new patients?
Dr. Nicholas Mezitis is accepting new patients on Vitals. View Dr. Nicholas Mezitis's profile on Vitals to make an appointment.
Does Dr. Nicholas Mezitis accept virtual/telehealth appointments?
Dr. Nicholas Mezitis has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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