Margaret Ryan, MD, MPH

Primary specialty

Preventive Medicine/Occupational Environmental Medicine PhysicianTaxonomy code 2083P0500X

License

D42576 Issued in MD

Practice address

NHRC Code 25
Box 85122
San Diego, CA 92186-5122

Phone

(619) 553-8097

Fax

(619) 553-7601

NPI assigned

Aug 1, 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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1122854400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1619977618",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12244 CAMINITO DEL MAR SANDS",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921302521",
            "telephone_number": "858-259-4234"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "NHRC CODE 25",
            "address_2": "BOX 85122",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921865122",
            "telephone_number": "619-553-8097",
            "fax_number": "619-553-7601"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RYAN",
        "first_name": "MARGARET",
        "name_prefix": "Dr.",
        "credential": "MD, MPH",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-08-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2083P0500X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Preventive Medicine/Occupational Environmental Medicine",
            "state": "MD",
            "license": "D42576",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kevin Peter Ryan, D.C.,C.C.S.P.
• Kyle Jonathan Ryan, M.D.
• Lindsey Ryan, RN
• Mackenzie Elise Ryan, PHARMD
• Madeline Susan Ryan
• Mary Ryan, LVN
• Michael G. Ryan, MD
• Nicholas Ford Ryan, DO
• Paige Cornell Ryan
• Patricia (Patti) Jean Ryan, AOD 7168

• Preventive Medicine/Occupational Environmental Medicine Physician in San Diego, CA
• Providers in San Diego, CA by specialty
• Preventive Medicine/Occupational Environmental 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.