Sydney Joye Decastilhos, FNP, BC

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

95036650 Issued in CA

Practice address

1162 Montgomery Dr FL 2
Santa Rosa, CA 95405-4802

Phone

(707) 890-4100

NPI assigned

Aug 20, 2025

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

Other names 1

• Sydney Joye Saxon Former name

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence Santa Rosa Memorial Hospital Hospital, Santa Rosa, CA, CCN 050174

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ssaxon1457347@oc.providencedirect.org

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.

• Providence Medical Foundation

  • Family Medicine Physician
  • Brea, CA
  • NPI 1871607762
  Medicare reassignment Care Compare group
• Providence Medical Foundation

  • General Practice Physician
  • Diamond Bar, CA
  • NPI 1285890624
  NPD
• Providence Medical Foundation

  • Surgery Physician
  • Eureka, CA
  • NPI 1477790517
  NPD
• Providence Medical Foundation

  • Family Medicine Physician
  • Anaheim, CA
  • NPI 1639715709
  NPD

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

• St. Joseph Health Northern California, LLC

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1134152549
  Care Compare affiliation

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

{
    "created_epoch": "1755648000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755648000000",
    "number": "1033096011",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2 SHELDRAKE CT",
            "city": "SAN RAFAEL",
            "state": "CA",
            "postal_code": "949031435"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1162 MONTGOMERY DR FL 2",
            "city": "SANTA ROSA",
            "state": "CA",
            "postal_code": "954054802",
            "telephone_number": "707-890-4100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DECASTILHOS",
        "first_name": "SYDNEY",
        "middle_name": "JOYE",
        "credential": "FNP, BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-08-20",
        "last_updated": "2025-08-20",
        "certification_date": "2025-08-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95036650",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SYDNEY",
            "last_name": "SAXON",
            "middle_name": "JOYE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Kaitlin Deasy, RN
• Lester I. Debbold, MD
• Wendell Paul Debele, L . AC
• Molly K Debrock, MA
• Christina Debrunner
• Marlon Decastro, M.D.
• Veronica Decicco, PH.D.
• Emily Decker, RN, PHN
• Suzanne Watts Dedmore, RN, FNP-C
• Ramzi Khalil Deeik, M.D.

• Family Nurse Practitioner in Santa Rosa, CA
• Providers in Santa Rosa, CA by specialty
• Family Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 20, 2025; 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.