Sindy B To, FNP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

NP95008708 Issued in CA

Practice address

299 W Foothill Blvd Ste 209
Upland, CA 91786-3806

Phone

(909) 982-4000

NPI assigned

Mar 30, 2018

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

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, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Healthcare Partners Affiliates Medical GroupGroup PAC ID 7315842002, 775 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• San Antonio Regional Hospital Hospital, Upland, CA, CCN 050099

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sto23111@epiclp.direct-ci.com

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.

• Healthcare Partners Affiliates Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593
  Medicare reassignment Care Compare group NPD
• Beaver Medical Group P C

  • Family Medicine Physician
  • Redlands, CA
  • NPI 1649503319
  Medicare reassignment NPD
• Centers for Family Medicine GP

  • Family Medicine Physician
  • Los Alamitos, CA
  • NPI 1467598243
  Medicare reassignment NPD
• Pinnacle Medical Group, Inc

  • Family Medicine Physician
  • Fontana, CA
  • NPI 1376876912
  Medicare reassignment NPD
• R Ruiz M D a Medical Corp

  • Primary Care Clinic/Center
  • Rialto, CA
  • NPI 1578599809
  Medicare reassignment NPD
• Saddleback Medical Group Inc

  • Gastroenterology Physician
  • Laguna Hills, CA
  • NPI 1386605822
  Medicare reassignment NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Riverside, CA
  • NPI 1316979834
  Medicare reassignment NPD
• Beaver Medical Group P C

  • Physical Therapist
  • Redlands, CA
  • NPI 1427090281
  NPD
• Cassidy Medical Group Inc.

  • Multi-Specialty Clinic/Center
  • Vista, CA
  • NPI 1215003470
  NPD
• Healthcare Partners Affiliates Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Pinnacle Medical Group, Inc

  • Family Medicine Physician
  • Fontana, CA
  • NPI 1043255763
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Fontana, CA
  • NPI 1316463763
  NPD

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

• San Antonio Regional Hospital

  • General Acute Care Hospital
  • Upland, CA
  • NPI 1780681189
  Care Compare affiliation

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

{
    "created_epoch": "1522368000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764460800000",
    "number": "1689170698",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380",
            "telephone_number": "702-579-3203"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "299 W FOOTHILL BLVD STE 209",
            "city": "UPLAND",
            "state": "CA",
            "postal_code": "917863806",
            "telephone_number": "909-982-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2350 S Diamond Bar Blvd Unit F",
            "address_purpose": "LOCATION",
            "city": "Diamond Bar",
            "state": "CA",
            "postal_code": "917653171",
            "country_code": "US",
            "telephone_number": "626-664-1816",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TO",
        "first_name": "SINDY",
        "middle_name": "B",
        "credential": "FNP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2018-03-30",
        "last_updated": "2025-11-30",
        "certification_date": "2025-11-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "NP95008708",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BOARD OF REGISTERED NURSING",
            "identifier": "NP95008708",
            "state": "CA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq",
            "affiliation": "Y",
            "endpointDescription": "carequality",
            "affiliationName": "SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "c-cda",
            "address_1": "3600 Rosemead Blvd",
            "city": "Rosemead",
            "state": "CA",
            "country_code": "US",
            "postal_code": "917702066",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Branden K Thyne, M.A.MFT
• Tien-Sheng Hsu, MD
• Sarah Tinsley
• Girlielyn Sy Tiu, MSN, APRN,FNP-C
• TLC Health Inc
• Tanya Tobing
• Kara Tofte, ASW, PPS
• Isabel Toledo
• Justin Tolentino, PMHNP
• Tomassian and Curran Apc

• Nurse Practitioner in Upland, CA
• Providers in Upland, CA by specialty
• Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 30, 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.