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

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 11/13/2019, 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

213 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

42 Patient Comments

Reviewed on Jan 14, 2020

When Dr. Kellis was at Willoughby and transferred to Solon I followed her to Solon.

Reviewed on Dec 31, 2019

Dr Kellis is very professional and very nice. she always answers my questions.

Reviewed on Dec 31, 2019

I have told others about my doctor and how pleased I am with her. I drive an hour to get to her office

Reviewed on Dec 11, 2019

this was the first time I've ever been to a doctor who showed concern for me and who treated me like a person. I had an incredible experience here!

Reviewed on Dec 2, 2019

Dr Kellis was amazing

Reviewed on Nov 18, 2019

Love Dr. Kelli's and her staff.

Reviewed on Nov 11, 2019

dr. Kellis is always very attentive and thorough. pleasant and upbeat.

Reviewed on Nov 4, 2019

it is so encouraging to have a dr like dr K. she is wonderful!

Reviewed on Oct 16, 2019

Very warm & friendly provider, incredibly attentive and helped build a treatment plan that would best suit my needs

Reviewed on Oct 14, 2019

was unable to see Dr Kelli's for a month but I wanted only her so I understand

Reviewed on Oct 14, 2019

Dr. Kellis is an outstanding doctor. She's very knowledgeable and genuinely cares about my well being. I wish all my providers were like her.

Reviewed on Oct 1, 2019

dr Kelliis is an outstanding physician

Reviewed on Sep 30, 2019

Dr Kellis always answers questions

Reviewed on Sep 25, 2019

I recieved very good care from Dr. Kellis I feel confident in her knowledge and willingness to work with me regarding my health and treatment.

Reviewed on Sep 25, 2019

I find Dr. Kellis intelligent, confident, and caring. I trust her with my health and care.

Reviewed on Sep 25, 2019

this dr is the most carining dr i am very graetfull for what she does for me

Reviewed on Sep 23, 2019

Dr. Kellis is amazing, in 32 years of diabetes, I have not had the amazing relationship and results I have had from her in a short time.

Reviewed on Sep 18, 2019

Dr. Kellis was very personable, listened to my problem, asked me what I wanted to do about it, and came up with a plan for me moving forward. Loved her!

Reviewed on Sep 9, 2019

Dr. Kellis was very caring and made me feel heard and important

Reviewed on Aug 28, 2019

Best Doc to date

Reviewed on Jul 15, 2019

Dr. Kellis was AMAZING! She genuinely cared about me and my health. She took the time to listen to my questions and made sure that I not only understood the answer but also her logic behind the answer. However, one of the most impressive things she did during my appointment was to take the time to make eye contact while she was talking, most of the time providers look at their screen and chart instead of looking at me while I speak. I have seen quite a few endocrinologists and general practitioners over the years and she is definitely one of the best. I will continue to make the 45 minute drive just to see her.

Reviewed on Jul 3, 2019

dr was extremely helpful, caring, understanding. great first appointment. glad to have found her.

Reviewed on Jun 3, 2019

Dr. Kelli's made me feel comfortable and is extremely knowledgeable and respectful.

Reviewed on May 21, 2019

Dr.K is a very special doctor. She is very kind to her patients. She takes time to talk to you. She has been wonderful to me!!

Reviewed on May 21, 2019

Dr. Kelis was knowledgeable, but seemed to want me out of office quickly. I waited for her for 30 mins, but my (new patient) appointment was over in about 15 mins.

Reviewed on May 15, 2019

Dr. Kellis is a bright light - intelligent, knowlegeable about my disease which is quite rare, pleasant and listened carefully to my history. She came up with a plan for my care (asking me to participate) and to return to see her in 3 months. In the meanwhile, I should email her with any concerns. I told her I would not waste her time. She smiled and replied, no, email anytime you need to, I check my email every day. I think she is incredibly competent and enjoys her job.

Reviewed on May 13, 2019

dr Kelli's is a great doctor. I could imagine managing my diabetes without her!

Reviewed on May 6, 2019

very good experience. wonderful Doctor who listened to you, explained everything and kept asking if I had any concernsor questions.

Reviewed on Apr 30, 2019

We love Dr Kellis... she is so easy to talk to...and very eager to answer all our questions .We appreciate her " bedside manner" very much.

Reviewed on Apr 30, 2019

I am very pleased Dr. V-Kellis is my doctor for the thyroid. I would not want anyone else. I always tell people I know that if they every need a doctor in her field - to go to her if they can.

Reviewed on Apr 30, 2019

I always tell everyone I know how great a doctor she is and would recommend her to anyone.

Reviewed on Apr 23, 2019

Dr. Kellis is great. she listens, offer suggestions based on her conversation with me. And takes the time to explain everything

Reviewed on Apr 22, 2019

I am very pleased and impressed with my experience with Dr Kellis and her staff

Reviewed on Apr 22, 2019

Dr. Kellis was very informative and the treatment that was prescribed, she wanted to know how i was feeling and results that were obtained. very informative and friendly and genuine about my medical condition

Reviewed on Apr 15, 2019

Very happy with Dr. Kellis appointment and explained everything to me. So very nice person. Ask if I had any questions and answered everything to my understanding.

Reviewed on Apr 15, 2019

Differently answered all my questions. Explained everything to me . Told me my options of treatment. Took alot af time to tell and explain my problem. Would highly recommend her. Great doctor.

Reviewed on Apr 9, 2019

Dr. Kellis was extremely helpful and very personable.

Reviewed on Mar 27, 2019

Dr Kellis is down to earth, friendly, and knowledgeable.

Reviewed on Mar 12, 2019

Dr. Kellis is amazing! She is thorough, kind and explain everything. She made me feel very comfortable and trustworthy.

Reviewed on Mar 5, 2019

wonderful experience, I felt that Dr Kellis listened to my concerns

Reviewed on Feb 27, 2019

Dr. Kellis takes her time with me does not rush through the appointment very professional & answers questions without hesitation if there is a question she will get back to me with appropriate answer no guessing a great asset to her department

Reviewed on Feb 19, 2019

Dr. Kellis,Is a very good listener and really takes her time with you, she's a great person.

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