NPIMap

Organization Active NPI

Sivalingam Medical Corporation, Inc.

Doing business as First Valley Medical Group

  • Internal Medicine Physician
  • Lancaster, CA
National Provider Identifier
1790480150
Registry record updated Aug 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
SIVALINGAM MEDICAL CORPORATION, INC.
Doing business as
First Valley Medical Group
Practice address
44725 10TH St W Ste 220
Lancaster, CA 93534-3048
Phone
(661) 726-3750
Fax
(661) 726-5013
NPI assigned
Apr 4, 2023
Last updated
Aug 24, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 24, 2026

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

Authorized official

Name
Dr. Kangaratnam Sivalingam, MD
Title
President
Phone
(661) 726-3724

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X Primary

Addresses

Primary practice location

44725 10TH St W Ste 220
Lancaster, CA 93534-3048

Mailing address

44725 10TH St W Ste 170
Lancaster, CA 93534-3000
Phone (661) 726-3724

Other names 1

  • First Valley Medical Group Doing business as

National Provider Directory

National Provider Directory
Tax ID family
First Valley Medical Group9 organizations share this tax ID, including this one

Other organizations with this tax ID 8

Organizations that report the same tax identification number in the National Provider Directory.

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1680566400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787529600000",
    "number": "1790480150",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44725 10TH ST W STE 170",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935343000",
            "telephone_number": "661-726-3724"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44725 10TH ST W STE 220",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935343048",
            "telephone_number": "661-726-3750",
            "fax_number": "661-726-5013"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SIVALINGAM MEDICAL CORPORATION, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2023-04-04",
        "last_updated": "2026-08-24",
        "certification_date": "2026-08-24",
        "status": "A",
        "authorized_official_last_name": "SIVALINGAM",
        "authorized_official_first_name": "KANGARATNAM",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "661-726-3724",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "First Valley Medical Group",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Lancaster, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.