Mary Vouyiouklis Kellis, M.D.
Endocrinology, Diabetes & Metabolism Physician · Cleveland, OH
Mary Vouyiouklis Kellis, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Cleveland, Ohio, and NPI 1942405790, issued on Jun 20, 2007. Check the license (Ohio 35.099918, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Mary Vouyiouklis Kellis
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 35.099918 OH
238508 NY
Self-reported in NPPES; status is on the state search - Practice location
- Cleveland Clinic F 20, Cleveland, OH 44195
- Phone
- (216) 444-6568
- Enumerated
- Jun 20, 2007
- Record last updated
- Jan 9, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120910000542); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 352 in Ohio → Look up another NPI →
Verify Mary Vouyiouklis Kellis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.099918Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,227 Medicare Part D claims for 394 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Levothyroxine Sodium565 claims
- Synthroid201 claims
- Ozempic174 claims
- Metformin Hcl112 claims
- Mounjaro93 claims
- Lantus Solostar78 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Cleveland ClinicMayfield Heights, OH · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mary Vouyiouklis Kellis among 352 endocrinology, diabetes & metabolism physician records in Ohio
Mary Vouyiouklis Kellis, M.D. is one of 352 endocrinology, diabetes & metabolism physician records with a practice address in Ohio. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 41% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2003 · median 2004 among the 255 with a school on file
- Record last updated2015 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Ohio
There are 352 endocrinology, diabetes & metabolism physician records in Ohio.
All 352 in Ohio → Every provider in Cleveland → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Patricio Aycinena, M.D.Cleveland, OH 441951912960949
- Miriam Delaney, MDCleveland, OH 441951730143470
- Charles Faiman, MDCleveland, OH 441951013023720
- Marwan Hamaty, MDCleveland, OH 441951124095146
- Amir Hamrahian, MDCleveland, OH 441951033219340
- Sangeeta Kashyap, MDCleveland, OH 441951679633622
- Allan Kennedy, MDCleveland, OH 441951669496022
- Maria Lansang, MDCleveland, OH 441951235153008
Common questions
What is Mary Vouyiouklis Kellis, M.D.'s NPI number?
Mary Vouyiouklis Kellis, M.D.'s National Provider Identifier (NPI) is 1942405790, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Vouyiouklis Kellis, M.D. located?
The NPPES record lists a practice address at Cleveland Clinic F 20, Cleveland, OH, 44195. Phone: (216) 444-6568. Providers update this record themselves, so call before visiting.
How can I verify Mary Vouyiouklis Kellis, M.D.'s license?
NPPES lists Ohio license number 35.099918, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Vouyiouklis Kellis, M.D. prescribe under Medicare Part D?
In 2024, Mary Vouyiouklis Kellis, M.D. had 2,227 Medicare Part D claims for 394 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.