What is Mary Kellis's background?

Dr. Kellis has over 23 years of experience in internal medicine. Dr. Kellis operates an independent practice.

Does Mary Kellis take Medicare?

Dr. Kellis has a Medicare provider ID. Contact the office to confirm enrollment and other coverage.

How do I reach Mary Kellis's office?

Cleveland Clinic F 20, 9500 Euclid Avenue, Cleveland, OH 44195. Phone: (216) 444-6568. Virtual visits are also available for patients who prefer remote care.

How does a virtual visit with Dr. Kellis work?

Dr. Kellis's office sends a secure video link before your appointment. You can join from any device with a camera — phone, tablet, or laptop. Most visits take 15–30 minutes. See the telehealth section above for what to prepare.

Mary Vouyiouklis Kellis, M.D.

Endocrinology, Diabetes & Metabolism

Internal Medicine

(216) 444-6568Cleveland, OH

Telehealth Available

NPI Active per CMS — Q2 2026

Telehealth Available NPI Active per CMS — Q2 2026

Mary Kellis, M.D. has practiced internal medicine for 23+ years, working in independent practice. With 23+ years of experience, she has been practicing in the Cleveland area. Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, and more.

1 of 137 Internal Medicine providers in OHSee all Internal Medicine in Cleveland|23+ years experience|NPI since 2007

Data updated 2015-01-09 on CMS NPPES

Contact & Location

Practice Location

Cleveland Clinic F 20 9500 Euclid Avenue, Cleveland, OH 44195-0001

(216) 444-6568

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Internal Medicine Endocrinology, Diabetes & Metabolism in ClevelandAllopathic & Osteopathic Physicians

Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, adrenal disorders, pituitary conditions, and polycystic ovary syndrome (PCOS).

Taxonomy: 207RE0101X

Virtual Endocrinology, Diabetes & Metabolism Care With Mary Kellis

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Mary Kellis for follow-ups, medication reviews, and ongoing care — no travel to Cleveland required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Mary Kellis

NPI records show Dr. Kellis as active with telehealth listed in Cleveland, OH. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (216) 444-6568.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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