Ragu Sivarajan, D.O,.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

20A14906 Issued in CA

Practice address

16465 Sierra Lakes Pkwy Ste 245
Fontana, CA 92336-1267

Phone

(909) 330-3939

NPI assigned

Jun 27, 2013

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

Other, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Inpatient Specialists of California PCGroup PAC ID 3476864448, 373 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Community Hospital of San Bernardino Hospital, San Bernardino, CA, CCN 050089
• Hemet Global Medical Center Hospital, Hemet, CA, CCN 050390
• San Antonio Regional Hospital Hospital, Upland, CA, CCN 050099

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/FJBCDD/Endpoint/FJBCDD
• Direct secure messaging: ragu.sivarajan.p1@direct.caremorewest.nextgenshare.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.

• Inpatient Specialists of California, PC

  • Internal Medicine Physician
  • San Bernardino, CA
  • NPI 1952792475
  Medicare reassignment Care Compare group
• Golden State Medical Group

  • Family Medicine Physician
  • Montclair, CA
  • NPI 1255958476
  Medicare reassignment NPD
• Hospitalist Medicine Physicians of California, Inc

  • Internal Medicine Physician
  • Apple Valley, CA
  • NPI 1184663965
  Medicare reassignment NPD
• Signify Health Medical Associates of California, PC

  • General Practice Physician
  • San Francisco, CA
  • NPI 1124685169
  Medicare reassignment NPD
• Wound Healing Care Specialists, Inc.

  • Surgery Physician
  • Ontario, CA
  • NPI 1306317961
  Medicare reassignment NPD
• Caremore Health Plan

  • Family Nurse Practitioner
  • Apple Valley, CA
  • NPI 1639542194
  NPD (past)
• San Antonio Regional Hospital

  • General Acute Care Hospital
  • Upland, CA
  • NPI 1780681189
  NPD (past)
• UCLA Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1043427248
  NPD (past)

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

• Community Hospital of San Bernardino

  • General Acute Care Hospital
  • San Bernardino, CA
  • NPI 1235290818
  Care Compare affiliation
• KPC Global Medical Centers, Inc.

  • General Acute Care Hospital
  • Hemet, CA
  • NPI 1114239068
  Care Compare affiliation
• 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": "1372291200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744761600000",
    "number": "1902246523",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 3282",
            "city": "RANCHO CUCAMONGA",
            "state": "CA",
            "postal_code": "917293282",
            "telephone_number": "909-330-3939",
            "fax_number": "909-352-5322"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "16465 SIERRA LAKES PKWY STE 245",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923361267",
            "telephone_number": "909-330-3939"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "330 E 7th St Fl 2",
            "address_purpose": "LOCATION",
            "city": "Upland",
            "state": "CA",
            "postal_code": "917866740",
            "country_code": "US",
            "telephone_number": "909-330-3939",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIVARAJAN",
        "first_name": "RAGU",
        "name_prefix": "Dr.",
        "credential": "D.O,.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2013-06-27",
        "last_updated": "2025-04-16",
        "certification_date": "2025-04-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A14906",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nikhil Kumar Sinha
• Andrea C. Sircable, DO
• Frances Elise Sisnett, PHARM.D
• Sister Loving Sisters Doula Care
• Lilybeth Calingasan Sistoza, MD
• Mark Lowrey Skinner, OD
• Terry Richard Skok, RNP
• Nisreen Sloulin, OD
• Brandon James Smallwood
• Kyle N Smart, DO

• Internal Medicine Physician in Fontana, CA
• Providers in Fontana, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 16, 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.