Melissa Siew, MD - Medicare Internal Medicine in Westminster, CA

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Melissa Siew, MD is a medicare enrolled "Internal Medicine" physician in Westminster, California. She graduated from medical school in 2012 and has 12 years of diverse experience with area of expertise as Internal Medicine. Her current practice location is 7955 Westminster Blvd, Westminster, California. You can reach out to her office (for appointments etc.) via phone at (714) 379-3221.

Melissa Siew is licensed to practice in California (license number A132081) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1780096099.

Contact Information

Melissa Siew, MD
7955 Westminster Blvd,
Westminster, CA 92683-4001
(714) 379-3221
Not Available

Map and Direction




Physician's Profile

Full NameMelissa Siew
GenderFemale
SpecialityInternal Medicine
Experience12 Years
Location7955 Westminster Blvd, Westminster, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Melissa Siew graduated from medical school in 2012
  NPI Data:
  • NPI Number: 1780096099
  • Provider Enumeration Date: 05/21/2014
  • Last Update Date: 09/18/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 7618286329
  • Enrollment ID: I20151020002779

Medical Identifiers

Medical identifiers for Melissa Siew such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1780096099NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A132081 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Graceland Hospice CareAnaheim, CAHospice
Hospice Touch Inc - Santa AnaSanta ana, CAHospice
Care Plus HospiceLaguna hills, CAHospice
Mission Hospital Regional Med CenterMission viejo, CAHospital
Villa Valencia Healthcare CenterLaguna hills, CANursing home
Palm Terrace Healthcare & Rehabilitation CenterLaguna hills, CANursing home
San Juan Capistrano Senior LivingSan juan capistrano, CANursing home

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. Melissa Siew allows following entities to bill medicare on her behalf.
Entity NameMemorialcare Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205167350
PECOS PAC ID: 8729277314
Enrollment ID: O20110113000219
Entity NamePacific Private Practice Network Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033501077
PECOS PAC ID: 1254659261
Enrollment ID: O20150422001711
Entity NameOhana Physicians Cooperative Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629536404
PECOS PAC ID: 4789915281
Enrollment ID: O20191015001471

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. Melissa Siew 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
Melissa Siew, MD
7955 Westminster Blvd,
Westminster, CA 92683-4001

Ph: () -		Melissa Siew, MD
7955 Westminster Blvd,
Westminster, CA 92683-4001

Ph: (714) 379-3221

Reviews and Comments


Internal Medicine Doctors in Westminster, CA

Theresa Thanh Ngoc Nguyen, M.D.
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Phone: 714-775-8090    Fax: 714-775-2998
Dr. Hieu N Tram, MD
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Practice Location: 15355 Brookhurst Street, Suite 102, Westminster, CA 92683
Phone: 714-775-3060    Fax: 714-531-0959
Dr. Vu Le, M.D.
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Practice Location: 9938 Bolsa Ave, Suite 205, Westminster, CA 92683
Phone: 714-531-9515    Fax: 714-531-9510
Dr. Loc Dac Bui, M.D.
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Practice Location: 8900 Bolsa Ave, Suite B, Westminster, CA 92683
Phone: 714-897-2623    Fax: 714-379-0343
Paul T. Duong, M.D.
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Practice Location: 9433 Bolsa Ave, Suite # A, Westminster, CA 92683
Phone: 714-839-7332    
David N Pham, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 14120 Beach Blvd 101, Westminster, CA 92683
Phone: 714-887-0400    Fax: 714-887-0701
Phuong-chi Phan, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 14571 Magnolia St, Suite 207, Westminster, CA 92683
Phone: 714-890-9241    Fax: 714-890-9541

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.