Rajeshwari Ayyar, MD - Medicare Internal Medicine in San Jose, CA

Rajeshwari Ayyar, MD is a medicare enrolled "Internal Medicine - Medical Oncology" physician in San Jose, California. Her current practice location is 2589 Samaritan Dr, San Jose, California. You can reach out to her office (for appointments etc.) via phone at (408) 426-4900.

Rajeshwari Ayyar is licensed to practice in California (license number C42666) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1871670703.

Contact Information

Rajeshwari Ayyar, MD
2589 Samaritan Dr,
San Jose, CA 95124-4102
(408) 426-4900
Not Available

Map and Direction




Physician's Profile

Full NameRajeshwari Ayyar
GenderFemale
SpecialityInternal Medicine - Medical Oncology
Location2589 Samaritan Dr, San Jose, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1871670703
  • Provider Enumeration Date: 10/31/2006
  • Last Update Date: 04/15/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4082085170
  • Enrollment ID: I20230127002753

Medical Identifiers

Medical identifiers for Rajeshwari Ayyar such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1871670703NPI-NPPES
00C426660MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine C42666 (California)Secondary
207RH0000XInternal Medicine - Hematology C42666 (California)Secondary
207RX0202XInternal Medicine - Medical Oncology C42666 (California)Primary

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. Rajeshwari Ayyar allows following entities to bill medicare on her behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameUniversity Healthcare Alliance
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760531198
PECOS PAC ID: 6305748799
Enrollment ID: O20040126000292

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. Rajeshwari Ayyar 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
Rajeshwari Ayyar, MD
2589 Samaritan Dr,
San Jose, CA 95124-4102

Ph: (408) 426-4900
Rajeshwari Ayyar, MD
2589 Samaritan Dr,
San Jose, CA 95124-4102

Ph: (408) 426-4900

Reviews and Comments


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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).

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