Dr. Fadi Siyam, MD

Internal Medicine •  Male • Age 37

  
Accepting new patients

Dr. Fadi Siyam, MD is a Internal Medicine Specialist in O Fallon, IL. He is affiliated with medical facilities such as HSHS St. Joseph's Hospital Breese and HSHS Holy Family Hospital. He is accepting new patients. Be sure to call ahead with Dr. Siyam to book an appointment.


Locations

HSHS Medical Group - O'Fallon

New Patient?
(618) 882-4729
Joslin Diabetes Center Affliate at HSHS Medical Group775 Sunset Blvd Ste B O Fallon, IL 62269
1
  • Call
  • Fax
  • Hours
    • Mon: 8:00am - 4:30pm
    • Tue: 8:00am - 4:30pm
    • Wed: 8:00am - 4:30pm
    • Thu: 8:00am - 4:30pm
    • Fri: 8:00am - 4:30pm
    • Sat: closed
    • Sun: closed
  • Directions

Dr. Siyam's Reviews

Likelihood to recommend Dr. Siyam

4.1

Based on 20 ratings

5 Stars
75%
(15)
4 Stars
0%
(0)
3 Stars
5%
(1)
2 Stars
0%
(0)
1 Star
20%
(4)
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What People Say About Dr. Fadi Siyam, MD
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Extremely knowledgeable and very helpful!
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Apr 27, 2020
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Dr. Siyam is an amazing doctor. He was one that helped me with my diabetes! He treated me as family! Highly respect him and his knowledge! Looking to get back under his care after 3 years living somewhere else.
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Jul 16, 2019
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Dr. Siyam is the worst doctor I have ever seen. He diagnosed me with Hashimotos and prescribed a small dose of synthroid. Frequently he confused me with different patients and gave advice for me to take prenatal vitamins at one point because he believed I was another patient that was currently pregnant.I expressed my concerns with my health again he threw a tantrum saying that nothing was wrong with me and that no one can help me. He shook his head and said I underestimated his intelligence.
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columbia MO – Feb 16, 2018
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Dr. Siyam has a very compassionate and professional way about him. He listens to his patients and does not rush through appointments.
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Dec 31, 2017
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Doctor Siyam has done a wonderful job helping me feel good again. Before seeing him my levels were always off. And I hadn't felt well in a couple years. I'm glad I found him. He treats me and not my just my TSH number. Thanks Doc.
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Shawn Goertz in Columbia, MO – Aug 10, 2017
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He is a wonderful doctor and a wonderful human being. I wish I could see him for all my other needs as well. He is very thorough and has a great personality.
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Kallista Hudson in Colubmia, MO – Jul 13, 2017
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By far the best doctor I have seen in more than 10 years! Very thorough, good bedside manner & extremely knowledgeable in his field. I would greatly recommend him to any person with issues in Endocrinology.
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David Felker in Columbia, MO – Apr 21, 2017
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Dr. Siyam at first, seemed ambitious and focused on my health issues. He diagnosed me w/ diabetes & gave me new meds by having his secretary leave a message on my phone. the next 2 visits I had with him, he focused only on my diabetes and ignored my other issues, My last visit I had with him, he got upset and acted like a teenager shrugging his shoulders and telling me to "get over it", when I voiced my opinion & didn't just agree to do what he wanted, plus threaten to keep me against my will
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Columbia, MO – Apr 09, 2017
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Dr. Siyam is a bright, intelligent, energetic physician who was one of the best young doctors at the University, went into private practice with another very promising physician. My referral to him has already paid off. He was willing to research and figure out a very difficult medical problem, something that all other Endocrinologist would not. He is also very practical and never quits trying to find the best solution. I highly recommend him.
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Columbia, MO – Nov 04, 2016
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I've never had a doctor make me feel more helpless. He diagnosed me with hypothyroid and prescribed synthroid. A month later (not feeling any better) I went back and got my blood work done assuming my levels were unchanged. To my surprise, my results showed that my TSH was normal and I was "healthy" while I still have all the hypothyroid symptoms. Dr. Siyam proceeded to not give me a plan to alleviate my other symptoms. Total lack of compassion. Categorized me as "healthy" and sent me on my way
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Columbia, MO – Sep 27, 2016
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Insurance Check

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Dr. Siyam accepts

Accepted insurance can change. Please double-check when making an appointment.

(618) 882-4729

Dr. Siyam accepts the following insurance:

Aetna
Choice Plus POS II
Anthem
National (BlueCard) PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
HAP Insurance
Health Alliance PPO
HealthLink
HealthLink PPO
Humana
Choice Care PPO

Background Check

No malpractice claims found for Illinois
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check if Dr. Siyam treats your condition or procedure

Dr. Siyam's conditions and procedures:

  • Abnormal Thyroid
  • Adrenal Gland Diseases
  • Adrenal Incidentaloma
  • Adrenal Insufficiency
  • Autoimmune Diseases
  • Autoimmune Thyroid Diseases
  • Benign Tumor
  • Bone Disorders
  • Breast Diseases
  • Calcium Metabolism Disorders
  • Cancer
  • Continuous Glucose Monitoring
  • Cushing's Syndrome
  • Diabetes Counseling
  • Diabetes Insipidus
  • Diabetes Mellitus, Secondary
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetes With Renal Manifestations
  • Diabetic Ketoacidosis
  • Diabetic Retinopathy
  • Goiter
  • Graves' Disease
  • Gynecomastia
  • Hashimoto's Disease
  • Hypercalcemia
  • Hyperlipidemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypoglycemia
  • Hypokalemia
  • Hyposmolality and Hyponatremia
  • Hypothyroidism
  • Kidney Disease
  • Lipid Disorders
  • Malaise and Fatigue
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Parathyroid (Gland) Disease
  • Parathyroid (Gland) Tumor: Other than Malignant
  • Phosphorus Metabolism Disorders
  • Proteinuria
  • Retina Diseases
  • Symptomatic Menopause
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Cyst
  • Thyroid Disease
  • Thyroiditis
  • Vitamin D Deficiency

About Me

Care Philosophy

Inspired by our Franciscan values of Respect, Care, Competence and Joy, HSHS Medical Group providers are devoted to elevating the patient as the focus of our existence. We will prioritize our decision-making to place the needs of our patients first. ...

Specialties

  • Internal Medicine

Board Certifications

Education

University of Missouri / Columbia Campus
Fellowship Hospital

Awards

Frequently Asked Questions

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Affiliated Hospitals

Check the quality of care at hospitals where Dr. Siyam treats patients.

Learn more

HSHS St. Joseph's Hospital Breese

Breese, IL

85% Patient experience rating, 16% higher than the national average

  • Outstanding Patient Experience Award™ (2019, 2018)

HSHS Holy Family Hospital

Greenville, IL

74% Patient experience rating, 5% higher than the national average

HSHS St. John's Hospital

Springfield, IL

72% Patient experience rating, 3% higher than the national average

HSHS St. Joseph's Hospital Highland

Highland, IL

87% Patient experience rating, 18% higher than the national average

  • Outstanding Patient Experience Award™ (2020)

Boone Hospital Center

Columbia, MO

77% Patient experience rating, 8% higher than the national average

  • America's 250 Best Hospitals Award™ (2020, 2019)

Samaritan Memorial Hospital

Macon, MO