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



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

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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

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Internal Medicine Doctors in Orange, CA

Michael Cheng, DO
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7110    
Harry Nguyen, D.O.
Geriatric Medicine
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7002    
Millie Arora,
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, City Tower, Suite 400, Orange, CA 92868
Phone: 714-456-5691    Fax: 714-456-8874
Dr. Sarah Jeanette Ettinger, M.D.
Geriatric Medicine
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-5135    
Dr. Antonio Halais Frangieh, MD, MPH
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7890    
Dr. Andy Yen-tang Lee, MD
Geriatric Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7890    
Dr. Jesse John Goitia Jr., M.D.
Geriatric Medicine
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-880-7812    

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