Dr Chienwei Timothy Chen, MD - Medicare Internal Medicine in Irvine, CA

Dr Chienwei Timothy Chen, MD is a medicare enrolled "Internal Medicine" physician in Irvine, California. He went to Boston University School Of Medicine and graduated in 1998 and has 27 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Memorialcare Medical Foundation and his current practice location is 4050 Barranca Pkwy, Suite 200, Irvine, California. You can reach out to his office (for appointments etc.) via phone at (949) 551-1090.

Dr Chienwei Timothy Chen is licensed to practice in California (license number A79035) 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 1992795256.

Contact Information

Dr Chienwei Timothy Chen, MD
4050 Barranca Pkwy, Suite 200,
Irvine, CA 92604-7706
(949) 551-1090
(949) 262-5500

Map and Direction




Physician's Profile

Full NameDr Chienwei Timothy Chen
GenderMale
SpecialityInternal Medicine
Experience27 Years
Location4050 Barranca Pkwy, Irvine, 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:
  • Dr Chienwei Timothy Chen attended and graduated from Boston University School Of Medicine in 1998
  NPI Data:
  • NPI Number: 1992795256
  • Provider Enumeration Date: 10/26/2005
  • Last Update Date: 10/13/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 8527033307
  • Enrollment ID: I20040826000913

Medical Identifiers

Medical identifiers for Dr Chienwei Timothy Chen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992795256NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A79035 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Memorialcare Saddleback Medical CenterLaguna hills, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Memorialcare Medical Foundation8729277314384

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 Chienwei Timothy Chen allows following entities to bill medicare on his behalf.
Entity NameMemorialcare Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205167350
PECOS PAC ID: 8729277314
Enrollment ID: O20110113000219

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 Chienwei Timothy Chen 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 Chienwei Timothy Chen, MD
17360 Brookhurst St, Attn: Mcmf Credentialing Dept.,
Fountain Valley, CA 92708-3720

Ph: () -
Dr Chienwei Timothy Chen, MD
4050 Barranca Pkwy, Suite 200,
Irvine, CA 92604-7706

Ph: (949) 551-1090

Reviews and Comments


Internal Medicine Doctors in Irvine, CA

Akbar Nassiry, M.D., M.P.H.
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Phone: 949-577-0047    Fax: 909-635-6085
Omid Vesal, M.D.
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Dr. Susan Davoodifar, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 4199 Campus Dr, Suite 550, Irvine, CA 92612
Phone: 949-509-6503    Fax: 949-326-0103
Randa Serag, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 4708 Barranca Pkwy, Irvine, CA 92604
Phone: 949-791-3101    Fax: 949-791-3112
Tara E Seery,
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Medicare: Accepting Medicare Assignments
Practice Location: 16105 Sand Canyon Ave Ste 230, Irvine, CA 92618
Phone: 949-764-5347    Fax: 949-557-0221
Nadir Yusaf Qazi, DO
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 113 Waterworks Way Ste 105, Irvine, CA 92618
Phone: 949-336-7293    

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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