Dr. Thomas Koroscil, MD


Endocrinology | Male

Dr. Thomas Koroscil, MD

Dr. Thomas Koroscil, MD is an endocrinology doctor who practices in Dayton, OH. He is 63 years old. Dr. Koroscil is affiliated with Good Samaritan Hospital, Kettering Medical Center and Miami Valley Hospital.

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Dr. Koroscil's Experience

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Memberships & Professional Affiliations

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Visiting Dr. Koroscil

Dr. Koroscil accepts 31 insurance carriers

Dr. Koroscil is now accepting new patients

Affiliated Hospitals

Hospital Quality
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Dr. Koroscil's Reviews

Likelihood of recommending Dr. Koroscil to family and friends
based on 31 total reviews (6 with comments)
Dr. Koroscil's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Comments (6)
in Dayton, OH |
My family doctor referred me to Dr Koroscil...it took over 2 months to get an appointment. The day of my appointment, I waited in the examination room for over 45 minutes before seeing him. He came in the room not knowing the "real" reason why I was sent to him. He then proceeded to do an ultrasound, although I had already had one done very recently with another doctor...if he would have initially looked at my chart, he would have already known the results. First and last time to see him!!
Fairborn, OH |
Very impersonal visit. Had a resident with him whom he mostly spoke to. Decided to perform an ultrasound without asking me if I wanted to do that first. Then, while performing an ultrasound on my thyroid said casually "I wouldn't be surprised if there was cancer in there." Never went back.
in Centerville, Ohio |
I didn't like the fact that he didn't want to explore other options of medications and or studies to confirm some symptoms I was having. The visit was my first and last one.
in Yellow Springs, OH |
Terrible experience. I waited 3 months for this appointment. When I got there the office was old and in terrible shape. It smelled like cigarette smoke and was way too small for the number of patients he had. The worst is that he didn't even have the decency to talk to me from the beginning. Instead, a med student came in and did the consult. Then, Dr. Koroscil made an appearance and gave me some lame diagnosis-very cold. I doubt he even looked at all my labwork. Just unacceptable.
in Dayton, OH |
Lacked personality, and did not make me feel comfortable or cared for. I was told that any med prescribed for the condition of which I was seeking consultation would interfere with a medication he somehow came up with that I am not taking and do not recall ever taking for a condition of which I have NEVER been diagnosed. I don't think he believed me, and refused to treat me for what my primary care physician had referred me because of an extremely high, off the chart blood test results.
in Dayton, OH |
He's an excellent, caring doctor. I wouldn't hesitate to recommend him to friends and others.
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Dr. Koroscil's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Endocrinology
  •  Board certified in Diabetes, Metabolism & Endocrinology and Internal 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. Koroscil 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. Koroscil's 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

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
  • Cushing's Syndrome
  • Diabetes Insipidus
  • Diabetes Mellitus, Secondary
  • Diabetes Type 1
  • Diabetes Type 2
  • Goiter
  • Graves' Disease
  • Growth Hormone Deficiency
  • 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
  • Parathyroid (Gland) Tumor: Other than Malignant
  • Symptomatic Menopause
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Disease
  • Thyroiditis
  • Vitamin D Deficiency


  • Medical School
    Uniformed Services University Of Health Sciences, Bethesda, Maryland
  • Internship Hospital
    Keesler Air Force Base, Biloxi, Mississippi
  • Residency Hospital
    Wilford Hall Medical Center-U.S. Air Force
  • Fellowship Hospital
    Wilford Hall Med Center

    Completed in 1990

Languages Spoken

  • English

Memberships &
Professional Affiliations

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


  • Endocrinology

Procedures Performed

  • Diabetes Counseling