Charles Tuan-Tu Song Nguyen, MD
Psychiatry Physician · Irvine, CA
Charles Tuan-Tu Song Nguyen, MD is a psychiatry physician with a practice address in Irvine, California, and NPI 1942380118, issued on Oct 16, 2006. Check the license (California 000000A69542, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Tuan-Tu Song Nguyen
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 000000A69542 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3 Salton, Irvine, CA 92602
- Phone
- (909) 610-9524
- Enumerated
- Oct 16, 2006
- Record last updated
- Apr 7, 2025
- Fax
- (909) 367-2922
- Medicare enrollment
- Enrolled (PECOS I20050915001194); accepts Medicare assignment
- Medical or professional school
- Irvine California College Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Charles Tuan-Tu Song Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 000000A69542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.1 times the Medicare Part D claims of the average psychiatry physician in 2024
6,113 Medicare Part D claims for 188 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Quetiapine Fumarate521 claims
- Trazodone Hcl458 claims
- Olanzapine449 claims
- Risperidone434 claims
- Divalproex Sodium363 claims
- Benztropine Mesylate320 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.
Industry payments in 2024: $513,937.50
640 payments; by number, the most common kind was travel and lodging; the largest payer was Otsuka America Pharmaceutical, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Mind Space Mental Health IncLaguna Beach, CA
- OC Geropsychiatric Medical GroupDana Point, CA
- Pacific Health Education Cognitive Center IncBakersfield, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Tuan-Tu Song Nguyen among 8,673 psychiatry physician records in California
Charles Tuan-Tu Song Nguyen, MD 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1998 · median 2005 among the 3,295 with a school on file
- Record last updated2025 · 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).
54 psychiatry physician records list a practice address in Irvine
They are 54 of the 7,778 NPPES records with a practice address in Irvine, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Irvine → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tuong Nguyen, M.D.Irvine, CA 926021033283536
- Anne Phan-Huy, MDIrvine, CA 926031679079230
- Parvin Afshar, M.D.Irvine, CA 926041437247335
- Hanaa Fam, M.DIrvine, CA 926041558311456
- Yingxiang Li, MDIrvine, CA 926041548098940
- Ralph Lissaur, M.D.Irvine, CA 926041245287960
- Andrew Min, M.D.Irvine, CA 926041134398233
- Donald Sharps, M.D.Irvine, CA 926041366412256
Common questions
What is Charles Tuan-Tu Song Nguyen, MD's NPI number?
Charles Tuan-Tu Song Nguyen, MD's National Provider Identifier (NPI) is 1942380118, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Tuan-Tu Song Nguyen, MD located?
The NPPES record lists a practice address at 3 Salton, Irvine, CA, 92602. Phone: (909) 610-9524. Providers update this record themselves, so call before visiting.
How can I verify Charles Tuan-Tu Song Nguyen, MD's license?
NPPES lists California license number 000000A69542, 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 Charles Tuan-Tu Song Nguyen, MD prescribe under Medicare Part D?
In 2024, Charles Tuan-Tu Song Nguyen, MD had 6,113 Medicare Part D claims for 188 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.