Theresa Thanh Ngoc Nguyen, MD - Medicare Internal Medicine in Westminster, CA

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Theresa Thanh Ngoc Nguyen, MD is a medicare enrolled "Internal Medicine" physician in Westminster, California. She went to University Of California, San Diego School Of Medicine and graduated in 1995 and has 29 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Family Choice Aco Inc, Theresa Thanh Ngoc Nguyen, Md, Inc. and her current practice location is 15576 Brookhurst St Ste B, Westminster, California. You can reach out to her office (for appointments etc.) via phone at (714) 775-8090.

Theresa Thanh Ngoc Nguyen is licensed to practice in California (license number A61129) 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 1003893801.

Contact Information

Theresa Thanh Ngoc Nguyen, MD
15576 Brookhurst St Ste B,
Westminster, CA 92683-7586
(714) 775-8090
(714) 775-2998

Map and Direction




Physician's Profile

Full NameTheresa Thanh Ngoc Nguyen
GenderFemale
SpecialityInternal Medicine
Experience29 Years
Location15576 Brookhurst St Ste B, 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:
  • Theresa Thanh Ngoc Nguyen attended and graduated from University Of California, San Diego School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1003893801
  • Provider Enumeration Date: 12/22/2005
  • Last Update Date: 04/13/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 6901068378
  • Enrollment ID: I20120501000264

Medical Identifiers

Medical identifiers for Theresa Thanh Ngoc Nguyen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003893801NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A61129 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Family Choice Aco Inc771937939542
Theresa Thanh Ngoc Nguyen, Md, Inc.88202502932

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. Theresa Thanh Ngoc Nguyen allows following entities to bill medicare on her behalf.
Entity NameTheresa Thanh Ngoc Nguyen, Md, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750667192
PECOS PAC ID: 8820250293
Enrollment ID: O20120501000230
Entity NameFamily Choice Aco Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164988168
PECOS PAC ID: 0941634919
Enrollment ID: O20191227001654
Entity NameFamily Choice Aco Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396416863
PECOS PAC ID: 7719379395
Enrollment ID: O20220111000260

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. Theresa Thanh Ngoc Nguyen 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
Theresa Thanh Ngoc Nguyen, MD
15576 Brookhurst St Ste B,
Westminster, CA 92683-7586

Ph: (714) 775-8090		Theresa Thanh Ngoc Nguyen, MD
15576 Brookhurst St Ste B,
Westminster, CA 92683-7586

Ph: (714) 775-8090

Reviews and Comments


Internal Medicine Doctors in Westminster, CA

Dr. Hieu N Tram, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 15355 Brookhurst Street, Suite 102, Westminster, CA 92683
Phone: 714-775-3060    Fax: 714-531-0959
Dr. Vu Le, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 9938 Bolsa Ave, Suite 205, Westminster, CA 92683
Phone: 714-531-9515    Fax: 714-531-9510
Dr. Loc Dac Bui, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8900 Bolsa Ave, Suite B, Westminster, CA 92683
Phone: 714-897-2623    Fax: 714-379-0343
Paul T. Duong, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9433 Bolsa Ave, Suite # A, Westminster, CA 92683
Phone: 714-839-7332    
David N Pham, MD
Internal Medicine
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.
Internal Medicine
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.