Department Endocrinology, Diabetes and Metabolism
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages Croatian, English
Surgeon No
Locations Specialties & Treatments

Treatment & Services

  • Blood Tests
  • Diabetes Center
  • General Endocrinology
  • Radioactive Iodine Treatment
  • Thyroid Aspiration
  • Thyroid Ultrasound
  • Thyroid Ultrasound And Biopsy
View all 7 Treatment & Services +

Specialty in Diseases & Conditions

  • Addison's Disease
  • Adrenal disorders
  • Androgen Deficiency (Low Testosterone)
  • Bone Disorders
  • Calcium Disorders
  • Diabetes
  • Diabetes, Gestational
  • Erectile Dysfunction
  • Familial Multiple Endocrine Neoplasia
  • Goiter
  • Gynecomastia
  • High Cholesterol
  • Hirsutism
  • Hyperthyroidism
  • Hypothyroidism
  • Klinefelter Syndrome
  • Metabolic Syndrome
  • Neuropathy - Diabetic
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Parathyroid Cancer
  • Parathyroid Disease Description
  • Pheochromocytoma
  • Pituitary Disorders
  • Pituitary Tumors
  • Prolactinoma
  • Sexual Hormone disorders
  • Thyroid and pregnancy
  • Thyroid Cancer
  • Thyroid Disease
  • Thyroid Nodule
  • Vitamin D Deficiency
View all 33 Specialties +


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About Mario Skugor, MD

Mario Skugor, MD, FACE, has been on Staff at Cleveland Clinic since 2002. He is board-certified in internal medicine and endocrinology, diabetes and metabolism.

 His clinical interests include thyroid disorders, disorders of calcium metabolism, metabolic bone disease and obesity. His practice is not limited to these diseases but also include diabetes mellitus and adrenal and pituitary disorders.

 He is also involved in teaching and training of medical students, residents and fellows.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Cleveland Clinic
Endo, Diabetes and Metabolism
Cleveland, OH USA

Residency - Saint Vincent Charity Medical Center
Internal Medicine
Cleveland, OH USA

Residency - Saint Luke's Medical Center
Internal Medicine
Cleveland, OH USA

Internship - Saint Luke's Medical Center
Internal Medicine
Cleveland, OH USA

Medical Education - University of Zagreb School of Medicine

Additional Training

  • American Association of Clinical Endocrinologists
  • American Thyroid Association
  • Endocrine Society

Professional Highlights

  • Co-Director, Endocrinology and Reproductive Organ Block, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, 2005-Present
  • President, Ohio River Regional Chapter, American Association of Clinical Endocrinologists, 2007-2008
  • Member, Task Force for Thyroid Ultrasound Testing and Certification, American Association of Clinical Endocrinologists, 2007-Present


  • Internal Medicine - Endocrinology, Diabetes and Metabolism

Specialty Interests

Hypothyroidism, hyperthyroidism, thyroid nodules, goiters, thyroid carcinoma, diabetes mellitus, hypercalcemia, hypocalcemia, osteoporosis, hyperlipidemia

Awards & Honors

  • Skeletal assessment by FELS method, FELS Institute, Yellow Springs, Ohio, 1993
  • Thyroid ultrasound and fine needle biopsy training course, Cleveland Clinic, 2001
     in teaching and training of medical students, residents and fellows.


  • Pfizer Scholars in Endocrinology Award, Oregon Health Sciences University
  • Research findings selected by Program Directors at National Center for Research Resources to represent one of the most scientifically important advances published by investigators in 1997 and 1998
Research & Publications

Research & Publications

See publications for Mario Skugor, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 11/25/2019, Dr. Skugor has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

241 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.8
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

39 Patient Comments

Reviewed on Jun 2, 2020

I had a very good experience with Dr. Skugor. I always do.

Reviewed on Jun 2, 2020

excellent provider, prompt response, courteous and helpful

Reviewed on Jun 1, 2020

Dr. Skugor is great!

Reviewed on May 15, 2020

Dr. Skugor is very personable and funny. He is casual and professional - you do not feel like a number.

Reviewed on May 13, 2020

great experience and the doctor was very kind and helpful

Reviewed on May 13, 2020

Dr Skugor has been my doctor for a number of year and always provides excellent care, detailed explanations and ensures that I understand all treatment options.

Reviewed on May 8, 2020

I trust Dr. Skugor with my care.

Reviewed on May 5, 2020

The doctor was thoroughly familiar with my situation.

Reviewed on Apr 29, 2020

Dr. Skugor is everything that you can want in a physician. knowledgeable, kind, patient and always on time.

Reviewed on Feb 7, 2020

Dr. Skugor is great!

Reviewed on Feb 4, 2020

love dr. skugor AN THE staff

Reviewed on Jan 30, 2020

Dr. Skugor is an amazing doctor and gentleman. He explains everything thoroughly, in a kind and caring manner. He is one of THE BEST doctors I've ever had. I've driven hundreds of miles to see him when I moved out of town and moved back to the Cleveland area because there is not a finer doctor.

Reviewed on Jan 24, 2020

We love Dr. Skugar.

Reviewed on Jan 24, 2020

Again, Dr. Skugar is the best. We love him.

Reviewed on Jan 24, 2020

Dr Skugor always makes time to see me around my other appointments

Reviewed on Jan 15, 2020

Dr Skugor is excellent and very responsive.

Reviewed on Jan 2, 2020

Complete confidence in Dr Skugor

Reviewed on Dec 19, 2019

Dr. Skugor continues to be an outstanding physician provider.

Reviewed on Nov 29, 2019

When asked why I came in, I told Dr. Skugor that I was here for a second opinion because although I have a very good primary doctor, she does not specialize in thyroid disorders. When asked what my current treatment was, I told him I was not currently on anything, but had tried a few different medications. However, before I could name all of them, he started mocking my doctor and asking me who I see and what kind of doctor they were and why would anyone treat the condition this way. I had to repeat myself multiple times to be heard. At which point I reminded him that I was here specifically for a second opinion. Duh! When describing my symptoms, he said he didn't think they were caused by my condition (this may very well be true), but when I asked for clarification on a few points he responded with jokes. I didn't drive all the way here to see a comedian... He even said one "symptom" was impossible and that it has to be something else. Meanwhile, I can reference articles written and published by the Cleveland Clinic and Mayo Clinic that describe what I'm experiencing in detail, so I suggest he do some research or at least talk with the other doctors in his office. He also laughed and said I bet I wish the symptoms were caused by my condition [as it would be cut and dry treatment]. At which point I clarified that, No, I wish I had no symptoms at all. I did not expect much from the appointment since I'm mostly aware of what my condition entails, I had hoped to learn a bit more and admit that I did walk away with some interesting tidbits; but my overall feeling from the appointment was that Dr. Skugor just doesn't care.

Reviewed on Nov 27, 2019

I everything was super easy and, as always, Dr Skugor and his staff were so incredibly accommodating and professional

Reviewed on Nov 27, 2019

I highly recommend Dr Skugor- he simply is the best and I wish he was my doctor for everything.. he doesn't miss any details

Reviewed on Nov 27, 2019

Dr. Skugor! Is one of the best endocrinologist, At the Cleveland Clinic..I've had him over 30 years.

Reviewed on Nov 27, 2019

Dr.Skugor is the best...

Reviewed on Nov 21, 2019

I enjoy my visits with Dr. Skugor. I feel free to ask questions and even though he is quite busy I like the pleasant, personalized care I receive each time.

Reviewed on Nov 19, 2019

Dr Skugor has been my endocrinologist for many years. He is always on time for my appt. , listens to any questions or concerns I may have and always explains in detail any changes needed in treatment. He takes a complete history between visits. He is also quick to respond to questions posed via email.

Reviewed on Nov 19, 2019

Dr. Skugor was straight forward and informative. He listened and gave his expert opinion and provided many options to ensure the process would be extensive. He even gave possible causes requiring other care providers and a willingness to make referrals.

Reviewed on Nov 15, 2019

I will continue to recommend Dr. Skugor and his team because they are the best. Trust me I've seen the rest.

Reviewed on Nov 1, 2019

Dr. Skugor is one of the most amazing doctors i've seen. He is easy to talk to, friendly and explains things and gets right to the point! I'm glad i chose him as my doctor!!

Reviewed on Oct 31, 2019

Dr. Skugor is wonderful! He is very personable and easy to talk to. He makes me feel valued as a patient.

Reviewed on Oct 9, 2019

Dr Skugor very nicely double-booked me himself since his schedule was full until the end of November and he thought I should be seen sooner.

Reviewed on Oct 9, 2019

Dr Skugor is the best. Since I live an hour and a half away, he is great about answering email questions. I try not to take advantage of that!

Reviewed on Oct 9, 2019

Dr Skugor is the best and I would definitely recommend him to others.

Reviewed on Oct 9, 2019

The care provider-Dr. Skugor-was excellent.very caring.

Reviewed on Sep 27, 2019

Dr. Skugor is an excellent medical provider

Reviewed on Sep 24, 2019

I have already started recommending Cleveland Clinic to others. I am blessed that I am being treated by the care providers at Cleveland Clinic. Simply put, they are the best!!

Reviewed on Sep 11, 2019

I already recommend Dr.Mario Skugor to family & friends as he explains things

Reviewed on Sep 5, 2019

I arrived early & the wait was 5 minutes. my discussion with Dr. Skugor was informative & helpful.

Reviewed on Sep 4, 2019

I've been seeing Dr. Skugor for 10+ years. Appreciate his expertise.

Reviewed on Jul 30, 2019

Seeing Dr. Skugor is always an exceptionally rewarding experience. He is very thorough, compassionate, and willing to answer any questions that I may have. I consider myself very fortunate to have him as my physician.

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