James Clifford Marshall, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

OS6394 Issued in FL

Practice address

13121 Cimarron Cir N
Largo, FL 33774-4137

Phone

(727) 776-1446

NPI assigned

Sep 7, 2006

Last updated

Jun 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• James C. Marshall, D.O.,F.a.C.C., P.a.

  • Cardiovascular Disease Physician
  • Largo, FL
  • NPI 1083743165
  Authorized official Same address or phone
• Cardiology Interpreters Inc

  • Cardiology Technician
  • Jacksonville, FL
  • NPI 1477887149
  NPD
• CVT Surgical Specialists

  • Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
  • Largo, FL
  • NPI 1003907296
  NPD (past)

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

{
    "created_epoch": "1157587200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781568000000",
    "number": "1609979228",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 4577",
            "city": "SEMINOLE",
            "state": "FL",
            "postal_code": "337754577",
            "telephone_number": "727-585-3610",
            "fax_number": "727-585-4405"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13121 CIMARRON CIR N",
            "city": "LARGO",
            "state": "FL",
            "postal_code": "337744137",
            "telephone_number": "727-776-1446"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARSHALL",
        "first_name": "JAMES",
        "middle_name": "CLIFFORD",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-07",
        "last_updated": "2026-06-16",
        "certification_date": "2026-06-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "WI",
            "license": "73941",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "FL",
            "license": "OS6394",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "371465900",
            "state": "FL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Annia Laura Marrero Lopez
• Danishka Marrero-Santos
• Nathaniel Anthony Marroquin, DO
• Jill M Marrotte, O.D.
• Jesse Marsh
• Cody Martin, PT, DPT
• Danielle Martin, NP-C
• Kirk Martin, PAC
• Marivel P Martin
• Sarah D Martin, PA

• Internal Medicine Physician in Largo, FL
• Providers in Largo, FL by specialty
• Internal Medicine Physician in Florida

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 16, 2026; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.