Catherine Van Nguyen-loh, DO - Medicare Family Practice in Fountain Valley, CA

Catherine Van Nguyen-loh, DO is a medicare enrolled "Family Medicine" physician in Fountain Valley, California. She graduated from medical school in 2019 and has 6 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Hoag Clinic and her current practice location is 8970 Warner Ave, Fountain Valley, California. You can reach out to her office (for appointments etc.) via phone at (714) 477-8400.

Catherine Van Nguyen-loh is licensed to practice in California (license number 20A20201) 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 1558828848.

Contact Information

Catherine Van Nguyen-loh, DO
8970 Warner Ave,
Fountain Valley, CA 92708-3211
(714) 477-8400
(714) 477-8401

Map and Direction




Physician's Profile

Full NameCatherine Van Nguyen-loh
GenderFemale
SpecialityFamily Practice
Experience6 Years
Location8970 Warner Ave, Fountain Valley, 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:
  • Catherine Van Nguyen-loh graduated from medical school in 2019
  NPI Data:
  • NPI Number: 1558828848
  • Provider Enumeration Date: 02/22/2019
  • Last Update Date: 03/05/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 7315302569
  • Enrollment ID: I20230424000964

Medical Identifiers

Medical identifiers for Catherine Van Nguyen-loh such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558828848NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 20A20201 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hoag Clinic3274872064347

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. Catherine Van Nguyen-loh allows following entities to bill medicare on her behalf.
Entity NameHoag Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1942799523
PECOS PAC ID: 3274872064
Enrollment ID: O20190221001936

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. Catherine Van Nguyen-loh 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
Catherine Van Nguyen-loh, DO
8970 Warner Ave,
Fountain Valley, CA 92708-3211

Ph: (714) 477-8400
Catherine Van Nguyen-loh, DO
8970 Warner Ave,
Fountain Valley, CA 92708-3211

Ph: (714) 477-8400

Reviews and Comments


Family Medicine Doctors in Fountain Valley, CA

Dr. Diana Kim Phung Nguyen Pham, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 18642 Bushard St, Fountain Valley, CA 92708
Phone: 714-883-0771    Fax: 714-962-2321
Kevin Howard Schachter, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8970 Warner Ave, Fountain Valley, CA 92708
Phone: 714-477-8400    
Dr. Kathryn Allen, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 18785 S. Brookhurst St, Ste 200, Fountain Valley, CA 92708
Phone: 714-378-5300    Fax: 714-378-5320
Edgar A Fernandez, DO
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 9930 Talbert Ave, Fountain Valley, CA 92708
Phone: 714-964-6229    
Dr. Robert Allan Devereaux, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 11100 Warner Ave, Ste 100, Fountain Valley, CA 92708
Phone: 714-957-9389    Fax: 714-957-0144
Dr. Hung-chuan Cheng, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 11100 Warner Ave #118, Fountain Valley, CA 92708
Phone: 714-444-0724    
Afdal Ibrahim Allam, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 8970 Warner Ave, Fountain Valley, CA 92708
Phone: 714-848-7757    

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.