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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 Education - 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 5/27/2021, 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

206 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 4.9
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

43 Patient Comments

Reviewed on Sep 22, 2021

Dr. Kellis really listened to me and my issues. We talked about what to look for and a plan going forward. She thoroughly explained everything I had questions about. She took the time to get to me know my history to better help me.

Reviewed on Sep 21, 2021

Doctor Kellis treated me like I was a family member. She was amazing.

Reviewed on Sep 15, 2021

I've had diabetes for 26 years, and seen a lot of Endos before, non compare to Dr. Kellis. She listened and maintained eye contact and showed a true interest in me as a human and not just another dot on her schedule. I will follow her as long as she treats Diabetes.

Reviewed on Sep 15, 2021

Dr. Kellis is an outstanding physician; she actually listens, takes my opinions in consideration, actually reviews my chart and examines me. She is a rarity and I am fortunate to have her as my physician;

Reviewed on Sep 14, 2021

Dr.Kellis very helpful

Reviewed on Sep 7, 2021

Everyone very professional. Dr.Kellis goes over and beyond the call of duty. She's very concerned about her patients. I love her

Reviewed on Sep 7, 2021


Reviewed on Sep 1, 2021

Dr. Kellis was very thorough and informative. I was very impressed with her and had a very good visit.

Reviewed on Sep 1, 2021

Dr Kellis is wonderful. I have followed her from Willoughby to Solon, to Chragrin Falls. She has helped me through my diabetic problems and makes me feel comfortable.

Reviewed on Aug 31, 2021

Doctor is very knowledgeable and thorough. Doctor responds to communication promptly and reviews history, results and tests completely. She looks at the patient as a whole. Very knowledgeable. I would certainly recommend this doctor to anyone needing endocrinologist!!

Reviewed on Aug 31, 2021

Dr.KellisIs Very personable and easy to talk with.I highly recommend her to my family and friends .

Reviewed on Aug 25, 2021

Dr. Kellis is very thorough, personable and prompt. Listening skills are excellent. Feedback has always been provided in a manner that is easy to understand.

Reviewed on Aug 24, 2021

Dr. Kellis was very personable, thorough and instilled confidence as to her ability to treat my condition with expertise.

Reviewed on Jul 14, 2021

Dr. Kellis is AMAZING. I have seen other specialists in the same field and she is at the top of my list. I would refer friends and family to her in a heartbeat. She is always conscientious, thorough, caring and has a great deal of empathy. I wish more providers provided the excellent care provided by Dr. Kellis.

Reviewed on Jul 7, 2021

Dr. Kellis is a breath of fresh air in regards to patient care.

Reviewed on Jun 29, 2021

The doctor was extremely kind, a good listener, and offered good insight.

Reviewed on Jun 15, 2021

Dr. Kellis has always been very helpful & informative when discussing my condition and related matters. I have a great deal of confidence in her & her diagnostic skills. I have recommended her to a friend, who is now her patient. She listens to my questions and answers them completely.

Reviewed on May 24, 2021

Dr Kellis is absolutely awesome!!

Reviewed on May 12, 2021

The nurse and Dr Kellis was so kind and understanding. They really listened and seemed to really care.

Reviewed on May 4, 2021

Dr was very helpful and precise in all of her actions."

Reviewed on May 4, 2021

Have to say I absolutely LOVED Dr. Kellis. Wish all of my doctors were like her!

Reviewed on Apr 28, 2021

the doctor was the perfect person and the most caring human being I loved her

Reviewed on Apr 28, 2021

Dr. K has always been great and taken a genuine concern for my diabetes

Reviewed on Apr 20, 2021

Excellent physician!!!

Reviewed on Apr 13, 2021

Dr. Kellis is always one of my favorite health care professionals. She always listens and responds as if you were her only patient. She always shows compassion.

Reviewed on Apr 6, 2021

Great job doctor, thank you!

Reviewed on Mar 23, 2021

I am so glad to have Dr. Kellis as my Endocrinologist. She is one of the nicest, professional and experienced doctor I have ever had. I tell everyone I know she is great.

Reviewed on Mar 23, 2021

Dr. V and her staff are conscientious and always follow through as needed.

Reviewed on Mar 23, 2021

I love Dr. V and her continued care of me and my mother. She has also seen my father. She is amicable, listens, and every visit is informative and substantive - along with being friendly.

Reviewed on Mar 23, 2021

I have recommended Dr. V to others and wish she could be duplicated to take on more patients.

Reviewed on Mar 17, 2021

Dr. Mary Vouyiouklis Kellis is a wonderful doctor who listens very well.

Reviewed on Mar 17, 2021

Again, the doctor was excellent!

Reviewed on Jan 19, 2021

This doctor always listens to my questions or concerns and gives detailed feedback.

Reviewed on Jan 19, 2021

Dr. is always very kind and knowledgeable and listens to any concerns that I have.

Reviewed on Jan 13, 2021

recently changed to dr Kellis best decision I made regarding my thyroid. she actually listens and I never feel rushed. She takes time to explain

Reviewed on Jan 13, 2021

Dr Kellis is the best doctor I've ever had. She genuinely cares and listens to what I'm struggling with. She doesn't make me feel judged. She just wants to help me fix what is wrong. I am so grateful to have a doctor like her.

Reviewed on Dec 30, 2020

Dr. Kellis, as always, listened to my concerns, and responded professionally, but with empathy.

Reviewed on Dec 30, 2020

Dr. Kellis was very nice, and made my appointment very comfortable. I appreciated her level of care and willingness to oversee issues periodically to be sure my GP has not overlooked anything of importance.

Reviewed on Dec 28, 2020

Dr was very easy to talk to. She was also a good listener.

Reviewed on Dec 9, 2020

My appointment with Dr. Kellis was excellent. She educated me on issues of concern and answered all of my questions easily and so that I could understand what she was talking about. She was very kind and I felt she cared about me and would work with me to address the issues that I came to see her about. in follow up messages to her through MyChart, she was very prompt in responding.

Reviewed on Nov 30, 2020

Dr. Kellis is nice, listens, knows you history (so she is prepared), empathetic, considerate, and flexible.

Reviewed on Nov 30, 2020

dr Kellis is easy to talk to and she listens to what I have to say.

Reviewed on Sep 29, 2020

I have already recommended Dr. Kellis to others, resulting in one new patient, who has been very impressed with Dr. Kellis, particularly as a diagnostician.

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