Department Endocrinology, Diabetes and Metabolism
Primary Location Solon Family Health Center
Type of Doctor Adults Only
Languages English, Greek
Surgeon No
Locations Specialties & Treatments

Treatment & Services

  • Blood Tests
  • Diabetes Center
View all 2 Treatment & Services +

Specialty in Diseases & Conditions

  • Adrenal Tumors
  • Amenorrhea
  • Calcium Disorders
  • Conn's Syndrome
  • Cushing's Syndrome
  • Diabetes
  • Familial Multiple Endocrine Neoplasia
  • Galactorrhea
  • Goiter
  • Gynecomastia
  • Hyperaldosteronism
  • Hypercalcemia
  • Hyperparathyroidism
  • Hyperprolactinemia
  • Hyperthyroidism
  • Hypothyroidism
  • Menstrual Disorders
  • Parathyroid Disease Description
  • Pheochromocytoma
  • Primary Hyperaldosteronism
  • Prolactin Excess States
  • Prolactinoma
  • Thyroid and pregnancy
  • Thyroid Cancer
  • Thyroid Disease
  • Thyroid Nodule
  • Turner Syndrome
  • Vitamin D Deficiency
View all 28 Specialties +


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About Mary Vouyiouklis Kellis, MD

Dr. Mary Vouyiouklis Kellis received her B.A. from Columbia University in New York City, where she graduated Magna Cum Laude.  She then attended medical school at Albert Einstein College of Medicine in the Bronx.  She completed her Internal Medicine Residency at NYU Langone Medical Center.  She also served as Chief Resident of the Internal Medicine Residency program.  She continued on at NYU Langone Medical Center, where she completed her fellowship in Endocrinology, Diabetes and Metabolism. 

After her fellowship, Dr. Vouyiouklis Kellis worked in private practice for 3 years and was voluntary faculty and a member of the Endocrinology Department at NYU Langone Medical Center, where she was involved in the teaching of medical residents and fellows. 

She was an attending physician at NYU Tisch Hospital, Bellevue Hospital, as well as the Manhattan VA Hospital.  She moved to Cleveland in September 2012 and has been a staff member in the Endocrinology, Diabetes and Metabolism Department here at the Cleveland Clinic since October 2012.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - NYU Langone Medical Center
Endocrinology, Diabetes & Metabolism
New York, NY USA

Residency - NYU Langone Medical Center
Internal Medicine
New York, NY USA

Medical School - Albert Einstein College of Medicine
New York, NY USA

Undergraduate - Columbia University
New York, NY USA


  • Internal Medicine - Endocrinology, Diabetes and Metabolism

Specialty Interests

Thyroid disorders, thyroid and pregnancy, thyroid cancer, multiple endocrine neoplasia, adrenal masses, Type 1 and Type 2 diabetes, Turner's syndrome, hyperparathyroidism

Awards & Honors

  • Listed as "Top doctor" in Cleveland Magazine in 2015 and 2016
  • Selected as "Top doctor" by Castle Connolly In 2015 and 2016
  • 2007-2008 "Fellow of the Year" Award (Endocrinology), NYU Langone Medical Center/Bellevue Hospital
  • 2006-2007 Chief Resident (Internal Medicine Residency), NYU Langone Medical Center/Bellevue Hospital
  • 2004 Award for Clinical Excellence (Department of Internal Medicine), NYU Langone Medical Center/Bellevue Hospital
Research & Publications

Research & Publications

See publications for Mary Vouyiouklis Kellis, 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 11/27/2018, Dr. Vouyiouklis Kellis 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

242 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 5
Listens 5
Courtesy, Respect & Concern 5
Knows Medical History 4.8
Time Spent with Patient 4.9
Patient Rating of Doctor 4.9

19 Patient Comments

Reviewed on Nov 6, 2018

I am very happy with my Cleveland Clinic Health Care doctor and her support team.

Reviewed on Nov 1, 2018

The physician and her staff were very accommodating to my needs. I needed a prescription refill, but I needed a prescribing physician as the script was one year old. I asked for and received an appointment with the doctor who kindly accepted the responsibility to follow my care for my thyroid medication. She outlined how she would communicate with me via My Chart. I was very grateful that she could fit me in her busy schedule.

Reviewed on Oct 2, 2018

Dr Mary Vouyiouklis Kellis is an excellent caring doctor. Always listens. Always pleasant.

Reviewed on Aug 13, 2018

Dr Mary Vouyiouklis Kellis was wonderful with my care. She took time to talk and explain everything to me so that I could understand. My medical problem is not resolved yet, but I feel very confident that I chose the right provider to help me and advise me. I'm in the process of getting test done. She's an excellent provider.

Reviewed on Jul 11, 2018

Dr. Vouyiouklis-Kellis has been a blessing in my life, and I could not be more pleased. My health improved greatly under her care, and I appreciate that she respects my opinion in my treatment plan. She is also a very genuine and caring person, and I am very lucky to have her!

Reviewed on Jun 20, 2018

Dr Kellis is very thorough during my exam. I became very emotional because I recently lossy my mom. She gave me the time I needed to cry and talk about my mom. we Thanks Dr Kellis for being so compassionate!

Reviewed on May 29, 2018

I like this Dr very much and would recommend her to anyone.

Reviewed on May 16, 2018

The Dr. took time to listen to my concerns.

Reviewed on May 9, 2018

Best Doctor I have ever seen. Always on time, very carring, great support staff and always puts me at ease!

Reviewed on May 9, 2018

Great Doctor!!

Reviewed on Apr 25, 2018

Doctor is the best in the way she takes care of me. Very good at answering my questions and is Tops in her specialty .Clinic is fortunate to have her on your staff.

Reviewed on Apr 23, 2018

dr Kellis is one of the most thoughtful and considerate mds I have. frankly traveling 45 to see her is not a problem because she is so kind

Reviewed on Apr 17, 2018

Dr. V goes above and beyond in regards to helping me with my healthcare.

Reviewed on Apr 4, 2018

Dr. Kellis listened to my concerns and my previous research about the condition. She was extremely knowledgeable as well as caring which put my mind at ease.

Reviewed on Mar 27, 2018

Good doctors have full schedules, however, would have loved to not wait almost three months to get in.

Reviewed on Mar 14, 2018

my provider is great about listening to my concerns and I feel that I can bring stuff up to her

Reviewed on Feb 20, 2018

I had questions about how I was feeling on the medication and she answered them.

Reviewed on Feb 19, 2018

I was put on new medication from previous thyroid medications and we will wait and see if this agrees with me.

Reviewed on Jan 15, 2018

Like mentioned before. She basically told me what medication I would be taken. Only when I voiced my concerns about the risks of this drug (upon my own research) did she present me with my other options.

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