Dr Duc Nguyen, MD - Medicare Internal Medicine in Santa Ana, CA

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Dr Duc Nguyen, MD is a medicare enrolled "Internal Medicine" physician in Santa Ana, California. He went to University Of California, Irvine, California College Of Medicine and graduated in 1989 and has 37 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 2621 S Bristol St, Santa Ana, California. You can reach out to his office (for appointments etc.) via phone at (805) 520-1577.

Dr Duc Nguyen is licensed to practice in California (license number A53620) 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 1306945365.

Contact Information

Dr Duc Nguyen, MD
2621 S Bristol St,
Santa Ana, CA 92704-5766
(805) 520-1577
(805) 520-8091

Map and Direction




Physician's Profile

Full NameDr Duc Nguyen
GenderMale
SpecialityInternal Medicine
Experience37 Years
Location2621 S Bristol St, Santa Ana, 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 Duc Nguyen attended and graduated from University Of California, Irvine, California College Of Medicine in 1989
  NPI Data:
  • NPI Number: 1306945365
  • Provider Enumeration Date: 09/22/2006
  • Last Update Date: 09/21/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 8224002142
  • Enrollment ID: I20040825000522

Medical Identifiers

Medical identifiers for Dr Duc Nguyen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1306945365NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A53620 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hand In Heart Home Health IncVentura, CAHome health agency
Professional Care Home Health Services IncSimi valley, CAHome health agency
Central Coast Home Health IncSan luis obispo, CAHome health agency
Access Tlc Home Health CareSan fernando, CAHome health agency
Assisted Home CareMission hills, CAHome health agency
Los Robles Hospital & Medical CenterThousand oaks, CAHospital
Adventist Health Simi ValleySimi valley, CAHospital
Marian Regional Medical CenterSanta maria, CAHospital
Community Memorial Hospital - VenturaVentura, CAHospital
Saint Francis Medical CenterCape girardeau, MOHospital
Camarillo Healthcare CenterCamarillo, 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. Dr Duc Nguyen allows following entities to bill medicare on his behalf.
Entity NameDuc Nguyen MD Corp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1487842365
PECOS PAC ID: 1052367414
Enrollment ID: O20050329000629
Entity NameIntensive Care Medical Specialists Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356716013
PECOS PAC ID: 0749574192
Enrollment ID: O20160808000721

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 Duc 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
Dr Duc Nguyen, MD
1177 Roadrunner Way,
Simi Valley, CA 93065-3159

Ph: (805) 520-1577		Dr Duc Nguyen, MD
2621 S Bristol St,
Santa Ana, CA 92704-5766

Ph: (805) 520-1577

Reviews and Comments


Internal Medicine Doctors in Santa Ana, CA

Theresa Thanh Ngoc Nguyen, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5030 Westminster Ave, Santa Ana, CA 92703
Phone: 714-775-8090    Fax: 657-251-0494
Dr. Meena Kumari Meka, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2740 S Bristol St Ste 208, Santa Ana, CA 92704
Phone: 714-979-5734    Fax: 562-426-9882
Mr. Hon Yu, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 2701 S Bristol St, Santa Ana, CA 92704
Phone: 714-210-2450    Fax: 714-210-2454
Alan C Schwartz, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2621 S Bristol St, #307, Santa Ana, CA 92704
Phone: 714-918-3070    
Quy Huu Nguyen, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1725 W 17th St, Santa Ana, CA 92706
Phone: 714-834-8017    Fax: 714-896-7316
Dr. Nabil A Phillips, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1100 N Tustin Ave, Suite A, Santa Ana, CA 92705
Phone: 714-542-9100    Fax: 714-542-9105
Dr. Ronald L Kaufman, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 3 Imperial Promenade, Ste 300, Santa Ana, CA 92707
Phone: 714-428-6812    Fax: 714-242-7640

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.