Dr. Harold Pretorius, MD


Endocrinology, Diabetes & Metabolism | Male

Dr. Harold Pretorius, MD
Dr. Harold Pretorius, MD is an endocrinology, diabetes & metabolism doctor who practices in Blue Ash, OH. He is 67 years old and has been practicing for 41 years. Dr. Pretorius is affiliated with Christ Hospital and Bethesda North Hospital.

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Dr. Pretorius' Experience

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Memberships & Professional Affiliations

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Visiting Dr. Pretorius

Dr. Pretorius accepts 9 insurance carriers

Dr. Pretorius is now accepting new patients

Affiliated Hospitals

Hospital Quality
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Dr. Pretorius' Reviews

Likelihood of recommending Dr. Pretorius to family and friends
based on 43 total reviews (5 with comments)
Dr. Pretorius' Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    31 to 45 minutes
Patient Comments (5)
in Milford, OH |
Very knowledgeable doctor!! My husbands blood sugar was through the roof with our family doctor. My sister-in-law has been seeing him for years, so we went to see Dr. Pretorius. So glad we did!! Just listening to him speak and tell us what he has done make me a believer. Diabetes is now under control, cannot say enough good about this man!!
in Cincinnati, OH |
Was able to pinpoint my illness after several doctors failed to do so. I attribute this to his scientist mind, and great depth of knowledge. Some complain about his bedside manner. While his IQ seems to be in tip-top shape, he could definitely work on his emotional intelligence. Having said that, don't be fooled. This guy is a work-a-holic and makes his rounds to visit ALL of his patients in the hospitals late into the night. Underneath, he is very tenderhearted and cares deeply.
in Loveland, OH |
Staff could not book appointment appropriately. 'Nurse' could not draw blood and asked me to come back another day! Dr. Pretorius is a dangerous doctor. When a doctor has purchased expensive equipment to do tests at his office, watch out. He runs all kinds of unnecessary tests just to bill your insurance. He destroyed my thyroid with a radiation pill when I would have preferred to treat with medication. Offices and waiting room are not clean.
I have been seeing Doctor Pretorius for years, and he has been successfully helping me manage my thyroid and autoimmune disease . He was the only doctor to properly find what was wrong with me , when I had been told for years that I was imagining my illness . After he probably saved my life when I had severe hyperthyroidism and Graves' disease , I sent several friends to him who experienced the same thing . He cured them as well. Long wait ? Yes , but he makes your visit count.
in Cincinnati |
I have been a patient for many years. He is very knowledgeable and takes the time to talk with every patient. He has done an awesome job managing my hypothyroidism and has,kept my weight down. He cares about all aspects of my health and has always gone the extra mile. You may have to be in the waiting room for awhile but it is because he takes his time with each patient.
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Dr. Pretorius' experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Endocrinology, Diabetes & Metabolism
  •  Board certified in Diabetes, Metabolism & Endocrinology, Internal Medicine and Nuclear Medicine
  •  Malpractice claims in Ohio not available
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Pretorius has no media or publications listed.

Background Check

  • n/a
    Malpractice Claims not available

    Healthgrades does not collect malpractice information for Ohio.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Pretorius' Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Diabetes, Metabolism & Endocrinology
  • Internal Medicine
  • Nuclear Medicine

Conditions Treated

  • Abnormal Thyroid
  • Acromegaly and Gigantism
  • Adrenal Gland Diseases
  • Adrenal Incidentaloma
  • Adrenal Insufficiency
  • Autoimmune Diseases
  • Autoimmune Thyroid Diseases
  • Benign Tumor
  • Bone Disorders
  • Breast Diseases
  • Calcium Metabolism Disorders
  • Cancer
  • Congenital Adrenal Hyperplasia (CAH)
  • Cushing's Syndrome
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetes With Renal Manifestations
  • Diabetic Retinopathy
  • Goiter
  • Graves' Disease
  • Gynecomastia
  • Hashimoto's Disease
  • Hypercalcemia
  • Hyperkalemia
  • Hyperlipidemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypokalemia
  • Hypoparathyroidism
  • Hypopituitarism
  • Hyposmolality and Hyponatremia
  • Hypothyroidism
  • Kidney Disease
  • Lipid Disorders
  • Malaise and Fatigue
  • Menstrual Disorders (incl. Dysmenorrhea)
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Overweight
  • Polycystic Ovarian Syndrome
  • Pregnancy-Related Disorders
  • Retina Diseases
  • Rickets
  • Symptomatic Menopause
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Cyst
  • Thyroid Disease
  • Thyroiditis
  • Vitamin D Deficiency


  • Medical School
    New York University School of Medicine

    Graduated in 1976

  • Internship Hospital
    University Tex

    Completed in 1977

  • Residency Hospital
    University Calif San Diego

    Completed in 1988

    University Tex

    Completed in 1978

  • Fellowship Hospital
    National Institute Health

    Completed in 1981

    Tulane University of Louisiana

    Completed in 1986

Languages Spoken

  • English
  • Spanish

Memberships &
Professional Affiliations

Dr. Pretorius does not have any memberships or affiliations listed. If you are Dr. Pretorius and would like to add memberships or affiliations, please update your free profile.


  • Endocrinology, Diabetes & Metabolism

Procedures Performed

Dr. Pretorius does not have any procedures listed. If you are Dr. Pretorius and would like to add procedures you perform, please update your free profile.