Dr Ragu Sivarajan, DO, - Medicare Internal Medicine in Ontario, CA

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Dr Ragu Sivarajan, DO, is a medicare enrolled "Internal Medicine" physician in Ontario, California. He graduated from medical school in 2013 and has 11 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 1304 W Holt Blvd Ste A, Ontario, California. You can reach out to his office (for appointments etc.) via phone at (909) 330-3939.

Dr Ragu Sivarajan is licensed to practice in California (license number 20A14906) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1902246523.

Contact Information

Dr Ragu Sivarajan, DO,
1304 W Holt Blvd Ste A,
Ontario, CA 91762-3640
(909) 330-3939
(909) 352-5322

Map and Direction




Physician's Profile

Full NameDr Ragu Sivarajan
GenderMale
SpecialityInternal Medicine
Experience11 Years
Location1304 W Holt Blvd Ste A, Ontario, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Ragu Sivarajan graduated from medical school in 2013
  NPI Data:
  • NPI Number: 1902246523
  • Provider Enumeration Date: 06/27/2013
  • Last Update Date: 12/26/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 5991087942
  • Enrollment ID: I20220705001570

Medical Identifiers

Medical identifiers for Dr Ragu Sivarajan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1902246523NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 20A14906 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
San Antonio Regional HospitalUpland, CAHospital
Heritage Park Nursing CenterUpland, CANursing home

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Ragu Sivarajan allows following entities to bill medicare on his behalf.
Entity NameHospitalist Medicine Physicians Of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184663965
PECOS PAC ID: 8426062027
Enrollment ID: O20060202000956
Entity NameWound Healing Care Specialists Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306317961
PECOS PAC ID: 5698019602
Enrollment ID: O20181203001136
Entity NameSignify Health Medical Associates Of California Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124685169
PECOS PAC ID: 8325370570
Enrollment ID: O20191022000320

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Ragu Sivarajan is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Ragu Sivarajan, DO,
Po Box 3282,
Rancho Cucamonga, CA 91729-3282

Ph: (909) 330-3939		Dr Ragu Sivarajan, DO,
1304 W Holt Blvd Ste A,
Ontario, CA 91762-3640

Ph: (909) 330-3939

Reviews and Comments


Internal Medicine Doctors in Ontario, CA

Hedy Cecilia Loa, MD
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Practice Location: 1131 W 6th St Ste 150, Ontario, CA 91762
Phone: 909-482-4462    Fax: 909-482-4485
Rodman A St. Clair, M.D.
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Practice Location: 3281 E Guasti Rd, Ontario, CA 91761
Phone: 909-605-8015    Fax: 866-929-7385
Abid H Khan, M.D.
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Practice Location: 1001 W 6th St, Ontario, CA 91762
Phone: 909-984-0313    
Dr. Yan Zhang, MD
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Practice Location: 653 E E St Ste 107, Ontario, CA 91764
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Dr. David Herbert Daniels, MD
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Practice Location: 3535 Inland Empire Blvd, Suite 27, Ontario, CA 91764
Phone: 909-941-2572    Fax: 909-481-5298
Liwanag Asuncion, M.D.
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Medicare: Medicare Enrolled
Practice Location: 606 E Bermuda Dunes St, Ontario, CA 91761
Phone: 440-225-7095    Fax: 909-295-9100
Dr. Vanessa Brennan Kwok, DO
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Practice Location: 3401 Centre Lake Dr, Suite 650, Ontario, CA 91761
Phone: 909-351-8529    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.