Marielle Mahan, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

D0103387 Issued in MD

Practice address

5612 Shields Dr
Bethesda, MD 20817-3532

Phone

(301) 571-4334

NPI assigned

Mar 27, 2019

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in DC

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Ophthalmology

Education

Georgetown University School of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Visionary Ophthalmology LLCGroup PAC ID 4587795687, 17 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

93.65 of 100Reported as group

Quality

86.8

Promoting interoperability

100

Improvement activities

40

Cost

86.36

Merit-based Incentive Payment System (MIPS)

Final score

99.11 of 100Reported as apm

Quality

84.29

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Visionary Ophthalmology LLC

  • Ophthalmology Physician
  • Rockville, MD
  • NPI 1952595084

  DC

  Medicare reassignment Care Compare group NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1553644800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759363200000",
    "number": "1487115010",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11300 ROCKVILLE PIKE STE 1202",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208523040",
            "telephone_number": "301-896-0890",
            "fax_number": "301-896-0968"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5612 SHIELDS DR",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208173532",
            "telephone_number": "301-571-4334"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "811 Russell Ave Ste H",
            "address_purpose": "LOCATION",
            "city": "Gaithersburg",
            "state": "MD",
            "postal_code": "208793510",
            "country_code": "US",
            "telephone_number": "301-571-4334",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4301 Connecticut Ave NW Ste 125",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200082332",
            "country_code": "US",
            "telephone_number": "301-896-0890",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAHAN",
        "first_name": "MARIELLE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-03-27",
        "last_updated": "2025-10-02",
        "certification_date": "2025-10-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207WX0200X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery",
            "state": "MD",
            "license": "D0103387",
            "primary": false
        },
        {
            "code": "207WX0200X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery",
            "state": "DC",
            "license": "MD600004334",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "DC",
            "license": "MD600004334",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "MD",
            "license": "D0103387",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tamika Magee, C.R.N.P.
• John Robert Magera, M.D.
• Caitlin Magidson, LGPC
• Maria Teresa Magone de Quadros Costa, M.D.
• Michael Magsalin, PHYSICAL THERAPIST
• Siddhartha Mahanty, M.D.
• Houda Mahayni, R.PH.
• Paul Maher, MD, MPH
• Kajol Maheshwari
• Nastaran Mahmoodian

• Ophthalmology Physician in Bethesda, MD
• Providers in Bethesda, MD by specialty
• Ophthalmology Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 2, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.