Mario Belledonne, M.D.
NPI 1033129457 · Nephrology Physician · Potomac, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mario Belledonne, M.D. is a Nephrology Physician provider in Potomac, MD (NPI 1033129457).
Provider details
- NPI number
- 1033129457
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D23177 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-08
- Last updated
- 2021-06-29
- Certified
- 2021-05-12
Frequently asked questions
- What is Mario Belledonne's NPI number?
- Mario Belledonne's National Provider Identifier (NPI) is 1033129457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mario Belledonne's specialty?
- Mario Belledonne is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mario Belledonne located?
- Mario Belledonne's practice location on file with NPPES is 8200 Tuckerman Ln, Potomac, MD 20854-3744.
- What is Mario Belledonne's phone number?
- The practice phone number listed in the NPPES registry for Mario Belledonne is (301) 605-7878.
- Does Mario Belledonne accept Medicare?
- Mario Belledonne is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mario Belledonne's NPI active?
- Yes — Mario Belledonne's NPI (1033129457) is active in the NPPES registry as of the last update on 2021-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.