Marcus Samuel Mermelstein, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

C0007408 Issued in MD

Practice address

8901 Wisconsin Ave BLDG 9a FL 3, Surgical ICU
Bethesda, MD 20889-5367

Phone

(301) 400-0018

NPI assigned

Apr 3, 2015

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2015

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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.

• Medstar Medical Group II LLC

  • General Practice Physician
  • Baltimore, MD
  • NPI 1184046187

  DC

  Medicare reassignment NPD
• Medstar Medical Group II LLC

  • Emergency Medical Services (Emergency Medicine) Physician
  • Washington, DC
  • NPI 1558189712
  NPD

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

{
    "created_epoch": "1428019200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746489600000",
    "number": "1629463898",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8901 WISCONSIN AVE BLDG 9A FL 3, SURGICAL ICU",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208890001",
            "telephone_number": "301-400-0018"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8901 WISCONSIN AVE BLDG 9A FL 3, SURGICAL ICU",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208895367",
            "telephone_number": "301-400-0018"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERMELSTEIN",
        "first_name": "MARCUS",
        "middle_name": "SAMUEL",
        "name_prefix": "Mr.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-03",
        "last_updated": "2025-05-06",
        "certification_date": "2025-05-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MD",
            "license": "C0007408",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Melissa A. Merideth, M.D., M.P.H.
• James Ray Merikangas, M.D.
• Maria J Merino, M.D.
• Deborah Phyllis Merke, M.D.
• Kassandra Merker, M.D.
• Alice Sandra Merril, MSW
• Daniel Marquez Merrill, M.D.
• Barry L Mersky, DDS
• Aliza Mervis
• Amanda Lee Mesaros-Smithers, PHARMD

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 6, 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.