Dr. Ferdinand Casis, MD


Endocrinology | Male

Bellin Health Systems 2820 Roosevelt Rd Marinette, WI 54143 Get Directions
Dr. Ferdinand Casis, MD

Dr. Ferdinand Casis, MD is an endocrinology doctor who practices in Marinette, WI. He is 51 years old and has been practicing for 26 years. Dr. Casis is affiliated with Bellin Memorial Hospital.

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Dr. Casis' Experience

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Visiting Dr. Casis

Dr. Casis accepts 8 insurance carriers

Dr. Casis is now accepting new patients

Affiliated Hospitals

Hospital Quality
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Dr. Casis' Reviews

Likelihood of recommending Dr. Casis to family and friends
based on 25 total reviews (6 with comments)
Dr. Casis' 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)
Incredibly poor bedside manner. Dismissed my concerns and was patronizing. Would not recommend him to anyone.
in Oconto, WI |
Dr. Casis is always very attentive and informative when I meet with him. He thoroughly explains his diagnosis and his treatment recommendation and never seems rushed when I have additional questions for him to answer. Dr. Casis is friendly and easy to talk to and understand and his staff are always very helpful and nice. I definitely would recommend my family and friends to see him!
in Green Bay |
Dr. Casis is very helpful and quite charming. He sincerely wants to help his patients. I would not hesitate to recommend him.
in Green Bay, WI |
Kind , considerate, and very attentive to questions or needs.
in Green Bay, WI |
Very considerate of concerns. Doesn't take too much time in appointments. In and out quickly.
in Escanaba, MI |
His solution to thyroiditis was to prescribe Synthroid and send me out the door. Total waste of my time.
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Dr. Casis' 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
  •  Malpractice claims in Wisconsin not available
  •  No sanctions found
  •  No board actions found

Awards & Recognition

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

    Dr. Casis has no media or publications listed.

Background Check

  • n/a
    Malpractice Claims not available

    Healthgrades does not collect malpractice information for Wisconsin.

    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. Casis' 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

Conditions Treated

  • Abnormal Thyroid
  • Adrenal Gland Diseases
  • Adrenal Insufficiency
  • Autoimmune Diseases
  • Autoimmune Thyroid Diseases
  • Bone Disorders
  • Calcium Metabolism Disorders
  • Cancer
  • Diabetes Insipidus
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetes With Renal Manifestations
  • Diabetic Retinopathy
  • Goiter
  • Graves' Disease
  • Hypercalcemia
  • Hyperlipidemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypoglycemia
  • Hypokalemia
  • Hypoparathyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Kidney Disease
  • Lipid Disorders
  • Malaise and Fatigue
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Parathyroid (Gland) Disease
  • Parathyroid (Gland) Tumor: Other than Malignant
  • Pituitary Gland Cancer
  • Proteinuria
  • Retina Diseases
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Disease
  • Vitamin D Deficiency


  • Medical School
    University Of Santo Tomas

    Graduated in 1991

  • Internship Hospital
    Mercy Hospital and Med Center

    Completed in 1996

  • Residency Hospital
    Mercy Hospital and Med Center

    Completed in 1998

  • Fellowship Hospital
    Lahey Clinic Medical Center-Endocrinology,Diabetes & Metabolism

Languages Spoken

  • English
  • Spanish

Memberships &
Professional Affiliations

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


  • Endocrinology
  • Endocrinology, Diabetes & Metabolism

Procedures Performed

  • Aspiration or Injection of Thyroid Cyst
  • Diabetes Counseling