Dr Robert William Buster, MD - Medicare Internal Medicine in Orange, CA

Dr Robert William Buster, MD is a medicare enrolled "Internal Medicine - Geriatric Medicine" physician in Orange, California. His current practice location is 845 W La Veta Ave Ste 108, Orange, California. You can reach out to his office (for appointments etc.) via phone at (714) 639-2600.

Dr Robert William Buster is licensed to practice in California (license number A24799) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1841343076.

Contact Information

Dr Robert William Buster, MD
845 W La Veta Ave Ste 108,
Orange, CA 92868-3930
(714) 639-2600
(714) 289-3906

Map and Direction




Physician's Profile

Full NameDr Robert William Buster
GenderMale
SpecialityInternal Medicine - Geriatric Medicine
Location845 W La Veta Ave Ste 108, Orange, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1841343076
  • Provider Enumeration Date: 01/19/2007
  • Last Update Date: 10/15/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 9537204664
  • Enrollment ID: I20100301000703

Medical Identifiers

Medical identifiers for Dr Robert William Buster such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1841343076NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0300XInternal Medicine - Geriatric Medicine A24799 (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. Dr Robert William Buster allows following entities to bill medicare on his behalf.
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346

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 Robert William Buster 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 Robert William Buster, MD
845 W La Veta Ave Ste 108,
Orange, CA 92868-3930

Ph: (714) 639-2600
Dr Robert William Buster, MD
845 W La Veta Ave Ste 108,
Orange, CA 92868-3930

Ph: (714) 639-2600

Reviews and Comments


Internal Medicine Doctors in Orange, CA

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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).

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.