Long H. Nguyen, M.D.
Psychiatry Physician · San Diego, CA
Long H. Nguyen, M.D. is a psychiatry physician with a practice address in San Diego, California, and NPI 1619138468, issued on Jun 24, 2008. Check the license (California A117141, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Long H. Nguyen
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- A117141 CA
251565 NY
R0769 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3420 Kenyon St, San Diego, CA 92110
- Phone
- (619) 221-6550
- Enumerated
- Jun 24, 2008
- Record last updated
- May 19, 2022
- Fax
- (619) 221-6550
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 3420 Kenyon St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Awalt, PSY.D. AND LCSWPsychologist1790980829
- Gene Batalia, MSW, LCSWClinical Social Worker1336345826
- Janine Becker, L.C.S.W.Clinical Social Worker1952507113
- Khadijah Bhutto Ramirez, M.A., LMFTMarriage & Family Therapist1407196413
- Mayra BonillaMarriage & Family Therapist1376071381
- Janice Brookes, LCSWClinical Social Worker1538364161
Verify Long H. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A117141Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average psychiatry physician in 2024
336 Medicare Part D claims for 44 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Buprenorphine-Naloxone92 claims
- Buspirone Hcl36 claims
- Trazodone Hcl32 claims
- Gabapentin19 claims
- Duloxetine Hcl18 claims
- Lamotrigine18 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.
Long H. Nguyen among 8,673 psychiatry physician records in California
Long H. Nguyen, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 52% of them.
- NPI issued2008 · 52% of these records are older, 43% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Diego → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Gurpreet Ahluwalia, M.D.San Diego, CA 921101164452272
- Scott Bunner, M.D.San Diego, CA 921101720115090
- Olga Caplin, MDSan Diego, CA 921101134249014
- Ronit Chernobelsky, MDSan Diego, CA 921101154468684
- Vanessa Greenwood, M.D.San Diego, CA 921101134281934
- H. Kower, M.D.San Diego, CA 921101841329653
- Lana Lee, MDSan Diego, CA 921101194803130
- Luckvin Manuel, M.D.San Diego, CA 921101699857813
Common questions
What is Long H. Nguyen, M.D.'s NPI number?
Long H. Nguyen, M.D.'s National Provider Identifier (NPI) is 1619138468, issued on Jun 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Long H. Nguyen, M.D. located?
The NPPES record lists a practice address at 3420 Kenyon St, San Diego, CA, 92110. Phone: (619) 221-6550. Providers update this record themselves, so call before visiting.
How can I verify Long H. Nguyen, M.D.'s license?
NPPES lists California license number A117141, 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 Long H. Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Long H. Nguyen, M.D. had 336 Medicare Part D claims for 44 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.