Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mario O Belledonne, MD

Individual provider Internal Medicine Physician · NPI 1033129457

Dr. Mario O Belledonne, MD is an Internal Medicine in Potomac, Maryland. Qualified in 1974, 52 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
52
Licensed in
MD
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

8200 Tuckerman Ln
Potomac, MD 20854-3744
Phone: (301) 605-7878
Fax: (301) 605-7878
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence D23177 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence D23177 (MD)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence D23177 (MD)
Nephrology Physician Taxonomy 207RN0300X · Licence D0023177 (MD)

Record details

NPI number1033129457
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 8, 2006
Last updated in NPPESJune 29, 2021
Certification dateMay 12, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesNEPHROLOGY
Medical schoolOTHER
Graduated 1974 (52 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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