David Thanh Nguyen, D.O.
Neurology Physician · San Diego, CA
David Thanh Nguyen, D.O. is a neurology physician with a practice address in San Diego, California, and NPI 1891050712, issued on Jul 6, 2012. Check the license (California 20A14415, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Thanh Nguyen
- Credential
- D.O.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 20A14415 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4405 Vandever Ave, San Diego, CA 92120
- Phone
- (619) 516-6890
- Enumerated
- Jul 6, 2012
- Record last updated
- Apr 17, 2023
- Medicare enrollment
- Enrolled (PECOS I20210511002768); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 4405 Vandever Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kaivon Arfaa, MDObstetrics & Gynecology Physician1912977463
- Sharmila Basu, M.D,Internal Medicine Physician1740551688
Verify David Thanh Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14415Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average neurology physician in 2024
131 Medicare Part D claims for 31 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Memantine Hcl22 claims
- Gabapentin20 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Thanh Nguyen among 2,339 neurology physician records in California
David Thanh Nguyen, D.O. is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2012 · median 2006 among the 1,628 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in San Diego → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Patrick Delaney, MDSan Diego, CA 921201699741645
- Gustavo Delgado, MDSan Diego, CA 921201386792372
- Arthur Flippin, MDSan Diego, CA 921201902954704
- Richard Kaplan, MDSan Diego, CA 921201003975681
- Boris Khamishon, NEUROLOGYSan Diego, CA 921201104922038
- Anne Matich, MDSan Diego, CA 921201235298803
- Daniel MicheliSan Diego, CA 921201447909809
- William Neil, M.D.San Diego, CA 921201770791964
Common questions
What is David Thanh Nguyen, D.O.'s NPI number?
David Thanh Nguyen, D.O.'s National Provider Identifier (NPI) is 1891050712, issued on Jul 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is David Thanh Nguyen, D.O. located?
The NPPES record lists a practice address at 4405 Vandever Ave, San Diego, CA, 92120. Phone: (619) 516-6890. Providers update this record themselves, so call before visiting.
How can I verify David Thanh Nguyen, D.O.'s license?
NPPES lists California license number 20A14415, 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 David Thanh Nguyen, D.O. prescribe under Medicare Part D?
In 2024, David Thanh Nguyen, D.O. had 131 Medicare Part D claims for 31 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
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.