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 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

181 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

38 Patient Comments

Reviewed on Aug 10, 2020


Reviewed on Jul 14, 2020

I have been seeing Dr. Kellis for several years and always have a wonderful experience with her! My condition has improved tremendously under her care. I appreciate that she works with me as a team to come up with the best treatment plan for me, and does not mind answering my questions. She also happens to be a very genuine and caring person, and I am very blessed to have her!

Reviewed on Jul 7, 2020

Dr Kellis was very kind and attentive to my needs.

Reviewed on Jun 30, 2020

I'm in a odd/confusing/not good situation. once the doctor figured out what was going on, she helped give me a direction of everything I needed to do.

Reviewed on Jun 10, 2020

As always, Dr. Kellis listened to my concerns, and we discussed options.

Reviewed on Jun 10, 2020

Very kind Doctor. I'm grateful to have met her and happy I was able to talk to her about my health.

Reviewed on Jun 10, 2020

I am very happy and grateful for my appointment and my Doctor.

Reviewed on Jun 10, 2020

very nice doctor

Reviewed on Jun 3, 2020

Although the video appointment went really well I do prefer seeing physicians in office but grateful for this option

Reviewed on Jun 2, 2020

Dr. Kellis is terrific!

Reviewed on May 26, 2020

Very thoughtful doctor who is very concerned about my overall health

Reviewed on May 19, 2020

Dr. Kellis was extremely helpful!

Reviewed on May 13, 2020

Dr. Kellis is amazing, she works with me.

Reviewed on Apr 15, 2020

Entire experience from start to finish was excellent. Nina helped me schedule an appointment and was so helpful. Dr. Kellis was extremely knowledgeable, patient, and friendly. I can't say enough good about everyone involved so far!

Reviewed on Apr 14, 2020

dr kellis is a great person, very communicative and easy to talk with

Reviewed on Apr 13, 2020

Dr. Kellis is very attentive to my issues that I have been having. she has guided me with receiving a Dexcom monitor and advised me thoroughly about my condition. she's a great doctor and I have recommended her to others.

Reviewed on Apr 1, 2020

I like all my doctors that I have thru Cleveland Clinic. Dr. Kellis is great and I would recommend her to anyone.

Reviewed on Apr 1, 2020

I am very pleased and satisfied with every dr I have thru Cleveland clinic

Reviewed on Mar 2, 2020

Dr. Kelllis is very responsive and thoughtful.

Reviewed on Mar 2, 2020

I felt very comfortable talking with Dr Kellis

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

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

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 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!

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