Frank Chieu, M.D.
Nephrology Physician · Oxnard, CA
Frank Chieu, M.D. is a nephrology physician with a practice address in Oxnard, California, and NPI 1235203647, issued on Nov 17, 2006. Check the license (California G25762, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Frank Chieu
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G25762 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 W Gonzales RD, Oxnard, CA 93036
- Phone
- (805) 278-9094
- Enumerated
- Nov 17, 2006
- Record last updated
- Jan 14, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (805) 278-8964
- Medicaid ID
- ZZZ75566Z CA
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 1200 W Gonzales RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicholas Bednarski, M.D.Nephrology Physician1457425860
- Ali Dana, M.D.Nephrology Physician1669561536
- Mariam Gyulnazaryan, PA-CPhysician Assistant1275316473
- Steven Ledesma, M.D.Nephrology Physician1386718799
- Tane Liu, M.D.Nephrology Physician1588738991
- Koosha Mortazavi, M.D.Nephrology Physician1215966999
Verify Frank Chieu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G25762Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Frank Chieu among 1,468 nephrology physician records in California
Frank Chieu, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileNo · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2010 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,468 in California → Every provider in Oxnard → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Nicholas Bednarski, M.D.Oxnard, CA 930361457425860
- Ali Dana, M.D.Oxnard, CA 930361669561536
- Gregory Krastein, MDOxnard, CA 930361942358759
- Steven Ledesma, M.D.Oxnard, CA 930361386718799
- Tane Liu, M.D.Oxnard, CA 930361588738991
- Hashim Mapara, MDOxnard, CA 930361306074927
- Koosha Mortazavi, M.D.Oxnard, CA 930361215966999
- Rajendra Niraula, MDOxnard, CA 930361922201003
Common questions
What is Frank Chieu, M.D.'s NPI number?
Frank Chieu, M.D.'s National Provider Identifier (NPI) is 1235203647, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frank Chieu, M.D. located?
The NPPES record lists a practice address at 1200 W Gonzales RD, Oxnard, CA, 93036. Phone: (805) 278-9094. Providers update this record themselves, so call before visiting.
How can I verify Frank Chieu, M.D.'s license?
NPPES lists California license number G25762, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.