Cassie Sewald

Primary specialty

Advanced Practice MidwifeTaxonomy code 367A00000X

License

236588 Issued in CA

Practice address

2495 Hospital Dr Ste 525
Mountain View, CA 94040-4186

Phone

(650) 962-5829

NPI assigned

Jan 30, 2025

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Certified Nurse Midwife (CNM)

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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.

• UCSF Health Medical Foundation

  dba Baychildren's Physicians

  • Pediatrics Physician
  • Emeryville, CA
  • NPI 1043628316
  Medicare reassignment NPD

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

{
    "created_epoch": "1738195200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771545600000",
    "number": "1851104129",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2495 HOSPITAL DR STE 525",
            "city": "MOUNTAIN VIEW",
            "state": "CA",
            "postal_code": "940404186",
            "telephone_number": "650-962-5829"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2495 HOSPITAL DR STE 525",
            "city": "MOUNTAIN VIEW",
            "state": "CA",
            "postal_code": "940404186",
            "telephone_number": "650-962-5829"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SEWALD",
        "first_name": "CASSIE",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-01-30",
        "last_updated": "2026-02-20",
        "certification_date": "2026-02-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "CA",
            "license": "95219861",
            "primary": false
        },
        {
            "code": "367A00000X",
            "taxonomy_group": "",
            "desc": "Advanced Practice Midwife",
            "state": "CA",
            "license": "236588",
            "primary": true
        },
        {
            "code": "363LW0102X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Women's Health",
            "state": "CA",
            "license": "95037799",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Serenity Sersecion, PHD
• Lillian Kane Servais, MS, CGC
• Megan Seto
• Richard Seto
• Jenna Miko Seufert, M.D.
• Joshua Patrick Seymour, RN
• SF Bay Area Plastic Surgery
• SF Bay Area Plastic Surgery Medical Group
• Dylan Shackelford
• Tamara Meyer Shaffer, LPC

• Advanced Practice Midwife in Mountain View, CA
• Providers in Mountain View, CA by specialty
• Advanced Practice Midwife in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 20, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.