Brimfield Dialysis, LLC

Primary specialty

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

Legal business name

BRIMFIELD DIALYSIS, LLC

Practice address

20359 Lake Chabot Rd
Castro Valley, CA 94546-5309

Phone

(510) 889-9973

Fax

(510) 582-1173

NPI assigned

Nov 20, 2019

Organization subpart

No

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

Authorized official

Name

Samuel T. Wey

Title

VP, Licensure & Certification

Phone

(615) 341-6641

Specialties & licenses 1

Addresses

Other names 1

• Castro Valley Dialysis Doing business as

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Listed as

DaVita Castro ValleyCCN 752527

Overall star rating

5.0 of 5

Ownership

Profit

Certified

Mar 12, 2021

Medicare certification status

ActiveFrom the Provider of Services file

Chain

DaVita

Dialysis stations

21

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

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Rockfrd, IL
  • NPI 1154997591

  Member Of

  NPD member

Locations

Affiliated clinicians 2

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

• Archana Aggarwal, M.D.

  • Nephrology Physician
  • Castro Valley 94546, CA
  • NPI 1326024084

  Dialysis facility

  Care Compare affiliation Name & address match
• Gene-Yuan Chang, MD

  • Nephrology Physician
  • Castro Valley, CA
  • NPI 1467731828

  Dialysis facility

  Care Compare affiliation Name & address match

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

{
    "created_epoch": "1574208000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1778716800000",
    "number": "1972149466",
    "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": "20359 LAKE CHABOT RD",
            "city": "CASTRO VALLEY",
            "state": "CA",
            "postal_code": "945465309",
            "telephone_number": "510-889-9973",
            "fax_number": "510-582-1173"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "BRIMFIELD DIALYSIS, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2019-11-20",
        "last_updated": "2026-05-14",
        "certification_date": "2026-05-14",
        "status": "A",
        "authorized_official_last_name": "WEY",
        "authorized_official_first_name": "SAMUEL",
        "authorized_official_middle_name": "T.",
        "authorized_official_title_or_position": "VP, LICENSURE & CERTIFICATION",
        "authorized_official_telephone_number": "615-341-6641"
    },
    "taxonomies": [
        {
            "code": "261QE0700X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, End-Stage Renal Disease (ESRD) Treatment",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Castro Valley Dialysis",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Castro Valley Dialysis",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Robert Albert Brans, PHARMD
• Tamara Lynn Brar, FNP
• Kristin Brew, MD
• Bright Healthcare Services Inc
• Brillando Juntos Learning Care LLC
• Debra A. Bronstein, MFT
• Jan Brooks, BSDH, RDH, RDHAP
• Brandon Brown, P.T.
• Bruce Ahtye DDS
• Helen Bruner, LCSW

• End-Stage Renal Disease (ESRD) Treatment Clinic/Center in Castro Valley, CA
• Providers in Castro Valley, 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 May 14, 2026; 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.