NPIMap

Organization Active NPI

Bay Area Gynecology Oncology Inc

Doing business as Bay Area Gynecology Oncology

  • Specialist
  • Campbell, CA
National Provider Identifier
1891801122
Registry record updated Sep 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
SpecialistTaxonomy code 174400000X
License
G85643 Issued in CA
Legal business name
BAY AREA GYNECOLOGY ONCOLOGY INC
Doing business as
Bay Area Gynecology Oncology
Practice address
910 Campisi Way Ste 2a
Campbell, CA 95008-2351
Phone
(408) 827-4274
Fax
(408) 827-4275
NPI assigned
Aug 21, 2006
Last updated
Sep 29, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 29, 2025

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

Authorized official

Name
Dr. James Frederick Lilja, M.D.NPI 1225081441
Title
Director
Phone
(408) 827-4274

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Specialist 174400000X A068842 CA
Specialist 174400000X G85643 CA Primary

Addresses

Primary practice location

910 Campisi Way Ste 2a
Campbell, CA 95008-2351

Mailing address

PO Box 33235
Los Gatos, CA 95031-3235

Other identifiers 4

IdentifierTypeStateIssuer
A068842OtherCALICENSE DR. MANUEL
G85643OtherCALICENSE DR. LILJA
00G856431MedicaidCA
00A068842MedicaidCA

Other names 1

  • Bay Area Gynecology Oncology Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20050815000987 CA Part B Supplier - Clinic/Group Practice 7618907148 Receives reassigned benefits from 10 practitioners
Practice locations: Campbell, CA

National Provider Directory

National Provider Directory

Locations

777 Knowles Dr
#12
Los Gatos, CA 95032
Phone (408) 378-9173

455 Oconnor Dr
Ste 370
San Jose, CA 95128
Phone (408) 292-7202

Practitioners & affiliated clinicians

Practitioners 11

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1156118400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1759104000000",
    "number": "1891801122",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 33235",
            "city": "LOS GATOS",
            "state": "CA",
            "postal_code": "950313235"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "910 CAMPISI WAY STE 2A",
            "city": "CAMPBELL",
            "state": "CA",
            "postal_code": "950082351",
            "telephone_number": "408-827-4274",
            "fax_number": "408-827-4275"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "BAY AREA GYNECOLOGY ONCOLOGY INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-08-21",
        "last_updated": "2025-09-29",
        "certification_date": "2025-09-29",
        "status": "A",
        "authorized_official_last_name": "LILJA",
        "authorized_official_first_name": "JAMES",
        "authorized_official_middle_name": "FREDERICK",
        "authorized_official_title_or_position": "DIRECTOR",
        "authorized_official_telephone_number": "408-827-4274",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "CA",
            "license": "A068842",
            "primary": false
        },
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "CA",
            "license": "G85643",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSE DR. MANUEL",
            "identifier": "A068842",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSE DR. LILJA",
            "identifier": "G85643",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G856431",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A068842",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Bay Area Gynecology Oncology",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Bay Area Gynecology Oncology",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Campbell, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.