Andrew Tien Duke, MD - Medicare Internal Medicine in Fullerton, CA

Andrew Tien Duke, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Fullerton, California. His current practice location is 100 E Valencia Mesa Dr, Fullerton, California. You can reach out to his office (for appointments etc.) via phone at (714) 992-3969.

Andrew Tien Duke is licensed to practice in California (license number A74218) 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 1013986959.

Contact Information

Andrew Tien Duke, MD
100 E Valencia Mesa Dr,
Fullerton, CA 92835-3813
(714) 992-3969
Not Available

Map and Direction




Physician's Profile

Full NameAndrew Tien Duke
GenderMale
SpecialityInternal Medicine - Critical Care Medicine
Location100 E Valencia Mesa Dr, Fullerton, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1013986959
  • Provider Enumeration Date: 03/14/2006
  • Last Update Date: 05/19/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 8527097187
  • Enrollment ID: I20050804000729

Medical Identifiers

Medical identifiers for Andrew Tien Duke such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1013986959NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine A74218 (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. Andrew Tien Duke allows following entities to bill medicare on his behalf.
Entity NameRiverside Medical Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720183403
PECOS PAC ID: 2961492327
Enrollment ID: O20040517000880
Entity NameEl-bershawi Medical Corp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386813103
PECOS PAC ID: 9032298492
Enrollment ID: O20080509000414
Entity NameCity Of Hope Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871886366
PECOS PAC ID: 3779751656
Enrollment ID: O20110720000244

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. Andrew Tien Duke 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
Andrew Tien Duke, MD
Po Box 1753,
Anaheim, CA 92815-1753

Ph: (714) 315-5759
Andrew Tien Duke, MD
100 E Valencia Mesa Dr,
Fullerton, CA 92835-3813

Ph: (714) 992-3969

Reviews and Comments


Internal Medicine Doctors in Fullerton, CA

Kiho Woo, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 101 E. Valencia Dr., Fullerton, CA 92835
Phone: 714-449-4800    Fax: 714-578-8629
Kumkum Sarkar Patel, M.D., MPH
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Pius J. Kim, M.D.
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Phone: 714-447-5027    
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Practice Location: 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835
Phone: 714-446-5900    Fax: 714-446-5800
Yung Lyou, M.D., PH.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835
Phone: 714-446-5900    
Eugene Boston,
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Medicare: Not Enrolled in Medicare
Practice Location: 2720 N Harbor Blvd, Suite 100, Fullerton, CA 92835
Phone: 714-449-6990    

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).

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