Marcus Wesley Lum, MD - Medicare Family Practice in La Mirada, CA

Marcus Wesley Lum, MD is a medicare enrolled "Family Medicine" physician in La Mirada, California. He graduated from medical school in 1990 and has 34 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Imperial Primary Care Medical Group and his current practice location is 15034 Imperial Hwy, La Mirada, California. You can reach out to his office (for appointments etc.) via phone at (562) 902-3000.

Marcus Wesley Lum is licensed to practice in California (license number G073347) 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 1003839242.

Contact Information

Marcus Wesley Lum, MD
15034 Imperial Hwy,
La Mirada, CA 90638-1301
(562) 902-3000
(562) 902-9563

Map and Direction




Physician's Profile

Full NameMarcus Wesley Lum
GenderMale
SpecialityFamily Practice
Experience34 Years
Location15034 Imperial Hwy, La Mirada, 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:
  • Marcus Wesley Lum graduated from medical school in 1990
  NPI Data:
  • NPI Number: 1003839242
  • Provider Enumeration Date: 07/26/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 3072588912
  • Enrollment ID: I20101108001331

Medical Identifiers

Medical identifiers for Marcus Wesley Lum such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003839242NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine G073347 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Oasis Haven Hospice, IncNewport beach, CAHospice
Pih Health Hospital-whittierWhittier, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Imperial Primary Care Medical Group34765283164

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. Marcus Wesley Lum allows following entities to bill medicare on his behalf.
Entity NameImperial Primary Care Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598893455
PECOS PAC ID: 3476528316
Enrollment ID: O20040901001416

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. Marcus Wesley Lum 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
Marcus Wesley Lum, MD
15034 Imperial Hwy,
La Mirada, CA 90638-1301

Ph: (562) 902-3000
Marcus Wesley Lum, MD
15034 Imperial Hwy,
La Mirada, CA 90638-1301

Ph: (562) 902-3000

Reviews and Comments


Family Medicine Doctors in La Mirada, CA

Alexander A Mendez, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 12675 La Mirada Blvd, Suite 201, La Mirada, CA 90638
Phone: 562-903-7339    Fax: 562-944-8631
Michael O Roach, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 15625 Imperial Hwy, La Mirada, CA 90638
Phone: 562-902-3000    Fax: 562-902-9563
Rafael Rubalcava, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15034 Imperial Hwy, La Mirada, CA 90638
Phone: 562-902-3000    Fax: 562-902-9563
Anthony Reyes Jr., M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 12675 La Mirada Blvd, Suite 201, La Mirada, CA 90638
Phone: 562-903-7339    Fax: 562-944-8631
Dr. Joseph Ravenna Jr., M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 15651 Imperial Hwy, Suite 101, La Mirada, CA 90638
Phone: 562-943-6715    Fax: 562-943-2665
Gregory John Galbreath, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 12675 La Mirada Blvd Ste 201, La Mirada, CA 90638
Phone: 562-903-7339    

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.