Dr Oscar Guillermo Zambrano, MD - Medicare Internal Medicine in Bell, CA

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Dr Oscar Guillermo Zambrano, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Bell, California. His current practice location is 6513 Atlantic Ave, Bell, California. You can reach out to his office (for appointments etc.) via phone at (323) 581-1649.

Dr Oscar Guillermo Zambrano is licensed to practice in California (license number A29529) 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 1184628927.

Contact Information

Dr Oscar Guillermo Zambrano, MD
6513 Atlantic Ave,
Bell, CA 90201-2521
(323) 581-1649
(323) 581-3472

Map and Direction




Physician's Profile

Full NameDr Oscar Guillermo Zambrano
GenderMale
SpecialityInternal Medicine - Cardiovascular Disease
Location6513 Atlantic Ave, Bell, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1184628927
  • Provider Enumeration Date: 06/09/2005
  • Last Update Date: 01/27/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 4183621642
  • Enrollment ID: I20061026000396

Medical Identifiers

Medical identifiers for Dr Oscar Guillermo Zambrano such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184628927NPI-NPPES
00A295290MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease A29529 (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 Oscar Guillermo Zambrano allows following entities to bill medicare on his behalf.
Entity NameOscar Zambrano M.d. Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851483960
PECOS PAC ID: 9335225648
Enrollment ID: O20080327000200
Entity NameWelcome Health Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174295349
PECOS PAC ID: 8527457233
Enrollment ID: O20211118002471

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 Oscar Guillermo Zambrano 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 Oscar Guillermo Zambrano, MD
6513 Atlantic Ave,
Bell, CA 90201-2521

Ph: (323) 581-1649		Dr Oscar Guillermo Zambrano, MD
6513 Atlantic Ave,
Bell, CA 90201-2521

Ph: (323) 581-1649

Reviews and Comments


Internal Medicine Doctors in Bell, CA

Zia Hashemi, M.D.
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Phone: 323-563-2222    Fax: 323-562-1101
Dr. Adhemar Fernando Uyuni, M.D
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Practice Location: 4566 Florence Ave, Suite 1, Bell, CA 90201
Phone: 323-771-1433    
Edgar Lluncor, MD
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Practice Location: 4276 Florence Ave, Bell, CA 90201
Phone: 323-560-4907    Fax: 323-560-2684
Dr. Jose Milton Lara, M.D.
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Medicare: May Accept Medicare Assignments
Practice Location: 4670 Gage Ave, Bell, CA 90201
Phone: 323-562-3135    Fax: 323-973-2553
Dr. Mouhamed Ali Farhat, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 4019 Brompton Ave, Bell, CA 90201
Phone: 323-369-8588    

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.