NPPES file of Aug 9, 2026

Mario O. Belledonne, M.D.

Nephrology Physician · Potomac, MD

Mario O. Belledonne, M.D. is a nephrology physician with a practice address in Potomac, Maryland, and NPI 1033129457, issued on Aug 8, 2006. Check the license (Maryland D23177, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033129457
Name
Mario O. Belledonne
Credential
M.D.
Primary taxonomy
Nephrology Physician 207RN0300X
License numbers
D23177 MD
D0023177 MD
Self-reported in NPPES; status is on the state search
Practice location
8200 Tuckerman LN, Potomac, MD 20854
Phone
(301) 605-7878
Enumerated
Aug 8, 2006
Record last updated
Jun 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(301) 605-7878
Medicaid ID
3233311100 MD
Medicare enrollment
Enrolled (PECOS I20101220000747); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Mario O. Belledonne in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D23177
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maryland license search

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92% fewer Medicare Part D claims than the average nephrology physician in 2024

112 Medicare Part D claims for 12 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.

  1. Mario Belledonne112
  2. Specialty average1,465

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.

Nephrology Physician providers in Maryland

There are 337 nephrology physician records in Maryland.

Other nephrology physician records in Maryland

  1. Hashim AbbasBaltimore, MD1396171070
  2. Kevin Abbott, MDBethesda, MD1730289133
  3. Hossam Abdalla, M.D.Glen Burnie, MD1285031765
  4. Marwa Abdalla, MBBSWaldorf, MD1851852768
  5. Jacques Abi Rached, MDBaltimore, MD1790920577
  6. Farah Abifaraj, MDBaltimore, MD1104352962
  7. Veena Acharya, MDBel Air, MD1285842211
  8. Rohini Adhikarla, M.DLutherville Timonium, MD1316146863
  9. Muzna Adil, M.D.Suitland, MD1780870618
  10. Harsha Adnani, MDAnnapolis, MD1437738838

Common questions

What is Mario O. Belledonne, M.D.'s NPI number?

Mario O. Belledonne, M.D.'s National Provider Identifier (NPI) is 1033129457, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mario O. Belledonne, M.D. located?

The NPPES record lists a practice address at 8200 Tuckerman LN, Potomac, MD, 20854. Phone: (301) 605-7878. Providers update this record themselves, so call before visiting.

How can I verify Mario O. Belledonne, M.D.'s license?

NPPES lists Maryland license number D23177, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mario O. Belledonne, M.D. prescribe under Medicare Part D?

In 2024, Mario O. Belledonne, M.D. had 112 Medicare Part D claims for 12 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.