Trailstone Dialysis LLC

Primary specialty

End-Stage Renal Disease (ESRD) Treatment Clinic/CenterTaxonomy code 261QE0700X

Legal business name

TRAILSTONE DIALYSIS LLC

Doing business as

Ontario Mills Dialysis

Practice address

2403 S Vineyard Ave
Ste D
Ontario, CA 91761-6471

Phone

(909) 923-3850

Fax

(909) 923-8568

NPI assigned

May 21, 2015

Last updated

Sep 4, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Sam T Wey

Title

VP Licensure&Certification

Phone

(615) 341-6691

Specialties & licenses 1

Addresses

Other identifiers 1

Other names 1

• Ontario Mills Dialysis Doing business as

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Listed as

DaVita Ontario Mills DialysisCCN 552815

Overall star rating

3.0 of 5

Ownership

Profit

Certified

Aug 22, 2017

Medicare certification status

ActiveFrom the Provider of Services file

Chain

DaVita

Dialysis stations

25

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Member of 1

Organizations this organization is a member of, according to the National Provider Directory.

• Total Renal Care Inc

  dba Cerritos Dialysis

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Cerritos, CA
  • NPI 1255681011

  Member Of

  NPD member

Affiliated clinicians 2

Clinicians who list this facility as an affiliation in Medicare Care Compare.

• Jonardi Handoko, MD

  • Nephrology Physician
  • Upland, CA
  • NPI 1780664581

  Dialysis facility

  Care Compare affiliation Name & address match
• Chirag Vaidya, MD

  • Nephrology Physician
  • Upland, CA
  • NPI 1073654570

  Dialysis facility

  Care Compare affiliation Name & address match

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

{
    "created_epoch": "1432166400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1756944000000",
    "number": "1437538618",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5200 VIRGINIA WAY",
            "address_2": "L&C DEPT",
            "city": "BRENTWOOD",
            "state": "TN",
            "postal_code": "370277569"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2403 S VINEYARD AVE",
            "address_2": "STE D",
            "city": "ONTARIO",
            "state": "CA",
            "postal_code": "917616471",
            "telephone_number": "909-923-3850",
            "fax_number": "909-923-8568"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TRAILSTONE DIALYSIS LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2015-05-21",
        "last_updated": "2025-09-04",
        "certification_date": "2025-09-04",
        "status": "A",
        "authorized_official_last_name": "WEY",
        "authorized_official_first_name": "SAM",
        "authorized_official_middle_name": "T",
        "authorized_official_title_or_position": "VP LICENSURE&CERTIFICATION",
        "authorized_official_telephone_number": "615-341-6691"
    },
    "taxonomies": [
        {
            "code": "261QE0700X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, End-Stage Renal Disease (ESRD) Treatment",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1437538618",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Ontario Mills Dialysis",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Angelina Toussaint
• Bianca Maria Tovalin
• Erica Tovar, RDA
• J Ryan Tovar
• Zoe Townsend
• Gabriel Tomas Trainer, M.D.
• Amy Tran
• Andy Tran
• Jessica Tran
• Kim Thi Tran

• End-Stage Renal Disease (ESRD) Treatment Clinic/Center in Ontario, CA
• Providers in Ontario, CA by specialty
• End-Stage Renal Disease (ESRD) Treatment Clinic/Center in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.