Diana Marquardt, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MDG44220 Issued in CA

Practice address

4290 Polk Ave
San Diego, CA 92105-1524

Phone

(619) 563-0507

Fax

(619) 563-0015

NPI assigned

Nov 14, 2005

Sex

Female

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 CA

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1131926400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1114909454",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4290 POLK AVE",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921051524",
            "telephone_number": "619-563-0507",
            "fax_number": "619-563-0015"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4290 POLK AVE",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921051524",
            "telephone_number": "619-563-0507",
            "fax_number": "619-563-0015"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARQUARDT",
        "first_name": "DIANA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-11-14",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "MDG44220",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Annemarie Maroney
• Ryan H Maroney
• Jennifer Santoro Marongiu, D.D.S.
• Angela Marooki
• Antonio B Marotta
• Marque Medical Clinic, Inc
• Marque Medical Clinic, Inc.
• Carolina Marques
• Diane Marques, PH.D.
• Andrea Marquez Aguilar

• Internal Medicine Physician in San Diego, CA
• Providers in San Diego, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.