NPIMap

Individual provider Active NPI

Corinne N Jansen, MD

  • Gynecologic Oncology Physician
  • Walnut Creek, CA
National Provider Identifier
1679065817
Registry record updated Sep 26, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gynecologic Oncology PhysicianTaxonomy code 207VX0201X
License
201468 Issued in CA
Practice address
2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone
(925) 393-0033
Fax
(925) 301-8956
NPI assigned
Jun 4, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 26, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X MD18565 RI
Gynecologic Oncology Physician 207VX0201X 201468 CA Primary
Obstetrics & Gynecology Physician 207V00000X 00000 MA

Addresses

Primary practice location

2637 Shadelands Dr
Walnut Creek, CA 94598-2512

Mailing address

2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone (929) 393-0033

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250808002579 CA Practitioner - Obstetrics/Gynecology 7911253638 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Alameda Health SystemGroup PAC ID 3779494521, 597 clinicians
Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

Practice addresses (Care Compare)

1411 E 31St St
Oakland, CA 94602-1018
Phone (510) 437-4800

2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone (925) 378-4512

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of the uterus1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
00000MAMDDentist
MD18565RIMDObstetrics & Gynecology Physician
201468CAMDGynecologic Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Alameda Health System Current Accepting new patients
Bass Medical Group Obstetrics & Gynecology Current Accepting new patients
Bass Medical Group CurrentSince Sep 22, 2025 Accepting new patients
Alameda Health System CurrentSince Sep 30, 2025 Accepting new patients
Bass Medical Group CurrentSince Sep 22, 2025 Accepting new patients
Alameda Health System CurrentSince Sep 30, 2025 Accepting new patients
Alameda Health System Past Accepting new patients
Bass Medical Group Past Accepting new patients
Bass Medical Group Past Accepting new patients

Locations

1505 Saint Alphonsus Way
Alamo, CA 94507
Phone (925) 837-4225

1411 E 31st St
Oakland, CA 94602
Phone (510) 437-4323

2637 Shadelands Dr
Walnut Creek, CA 94598
Phone (925) 627-3424

Interoperability endpoints

  • Direct secure messaging: cjansen186524@ehr.johnmuirhealth.com
  • Direct secure messaging: cjansen761747@hisp.ehr.sutterhealth.org

Organizations & group practices 9

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.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1528070400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758844800000",
    "number": "1679065817",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "929-393-0033",
            "fax_number": "925-301-8956"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-393-0033",
            "fax_number": "925-301-8956"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JANSEN",
        "first_name": "CORINNE",
        "middle_name": "N",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-06-04",
        "last_updated": "2025-09-26",
        "certification_date": "2025-09-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "RI",
            "license": "MD18565",
            "primary": false
        },
        {
            "code": "207VX0201X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecologic Oncology",
            "state": "CA",
            "license": "201468",
            "primary": true
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MA",
            "license": "00000",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.