Catherine Nguyen, MD
Family Medicine Physician · Costa Mesa, CA
Catherine Nguyen, MD is a family medicine physician with a practice address in Costa Mesa, California, and NPI 1730569005, issued on Jun 2, 2015. Check the license (California A144732, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Catherine Nguyen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A144732 CA
Self-reported in NPPES; status is on the state search - Practice location
- 722 Baker St, Costa Mesa, CA 92626
- Phone
- (714) 557-6300
- Enumerated
- Jun 2, 2015
- Entity
- Type 1 · individual
Also registered at 722 Baker St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Chun, MDFamily Medicine Physician1932199213
- Loi Doan, DOFamily Medicine Physician1316523178
- Rachit Doshi, M.D.Student in an Organized Health Care Education/Training Program1548555394
- Ashkan Farhadi, M.D.Gastroenterology Physician1760423123
- Joseph Horejsi, MDFamily Medicine Physician1295726347
- Ena Kariya, MDFamily Medicine Physician1588655658
Verify Catherine Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A144732Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
84% fewer Medicare Part D claims than the average family medicine physician in 2024
563 Medicare Part D claims for 70 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Atorvastatin Calcium46 claims
- Levothyroxine Sodium43 claims
- Gabapentin31 claims
- Lisinopril29 claims
- Rosuvastatin Calcium27 claims
- Metformin Hcl24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital or facility affiliation
- Memorialcare Medical FoundationCosta Mesa, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
48 family medicine physician records list a Costa Mesa practice address
They are 48 of the 4,286 NPPES records with a Costa Mesa practice address, and 16,272 family medicine physician records in California.
All 48 in Costa Mesa → All 16,272 in California → Every provider in Costa Mesa →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Catherine Nguyen, MD's NPI number?
Catherine Nguyen, MD's National Provider Identifier (NPI) is 1730569005, issued on Jun 2, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Nguyen, MD located?
The NPPES record lists a practice address at 722 Baker St, Costa Mesa, CA, 92626. Phone: (714) 557-6300. Providers update this record themselves, so call before visiting.
How can I verify Catherine Nguyen, MD's license?
NPPES lists California license number A144732, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine Nguyen, MD prescribe under Medicare Part D?
In 2024, Catherine Nguyen, MD had 563 Medicare Part D claims for 70 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.