Marielle Mahan, MD
Ophthalmology Physician · Bethesda, MD
Marielle Mahan, MD is an ophthalmology physician with a practice address in Bethesda, Maryland, and NPI 1487115010, issued on Mar 27, 2019. Check the license (Maryland D0103387, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Marielle Mahan
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- D0103387 MD
MD600004334 DC
Self-reported in NPPES; status is on the state search - Practice location
- 5612 Shields Dr, Bethesda, MD 20817
- Phone
- (301) 571-4334
- Enumerated
- Mar 27, 2019
- Record last updated
- Oct 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20250926003205); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2019
- Entity
- Type 1 · individual
Also registered at 5612 Shields Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rosalie Bair, M.D.Ophthalmic Plastic and Reconstructive Surgery Physician1225049554
Verify Marielle Mahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0103387Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average ophthalmology physician in 2024
275 Medicare Part D claims for 109 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 63 claims were for opioids.
Most prescribed
- Ondansetron Odt62 claims
- Methylprednisolone45 claims
- Neomycin-Polymyxin-Dexameth30 claims
- Hydrocodone-Acetaminophen28 claims
- Oxycodone Hcl28 claims
- Solu-Medrol13 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.
Bills Medicare through one group practice
- Visionary Ophthalmology LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ophthalmology Physician providers in Maryland
There are 588 ophthalmology physician records in Maryland.
Other ophthalmology physician records in Maryland
- Abdulrahman Abodarahim, MBBCHBaltimore, MD1770182560
- Donald Abrams, M.D.Baltimore, MD1841253218
- Lisa Abrams, M.D.Lutherville, MD1972582393
- Neal Adams, MDSilver Spring, MD1851354500
- Richard Adler, M.D.Baltimore, MD1629076179
- Arturo Aglubat, M.D.Bel Air, MD1609855055
- Omar Ahmad, MDWaldorf, MD1093715310
- Zaaira Ahmad, MDSalisbury, MD1154591964
- Ishrat Ahmed, MDBaltimore, MD1659828432
- Esen Akpek, M.D.Baltimore, MD1851356943
Common questions
What is Marielle Mahan, MD's NPI number?
Marielle Mahan, MD's National Provider Identifier (NPI) is 1487115010, issued on Mar 27, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marielle Mahan, MD located?
The NPPES record lists a practice address at 5612 Shields Dr, Bethesda, MD, 20817. Phone: (301) 571-4334. Providers update this record themselves, so call before visiting.
How can I verify Marielle Mahan, MD's license?
NPPES lists Maryland license number D0103387, 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 Marielle Mahan, MD prescribe under Medicare Part D?
In 2024, Marielle Mahan, MD had 275 Medicare Part D claims for 109 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.