Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Charles Tuan-Tu Song Nguyen, MD

Individual provider Psychiatry Physician · NPI 1942380118

Dr. Charles Tuan-Tu Song Nguyen, MD practises Psychiatry in Irvine, California. Graduated from Irvine California College of Medicine in 1998, 28 years ago. Practices with Mind Space Mental Health Inc, a 2-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
28
Trained at
Irvine California College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3 Salton
Irvine, CA 92602-2425
Phone: (909) 610-9524
Fax: (909) 367-2922
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5901 E 7th St, Long Beach, CA 90822-5201 — (562) 826-8000

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 000000A69542 (CA)

Record details

NPI number1942380118
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 16, 2006
Last updated in NPPESApril 7, 2025
Certification dateApril 7, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Also practisesNEUROPSYCHIATRY
Medical schoolIRVINE CALIFORNIA COLLEGE OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Mind Space Mental Health Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients132
Services billed 2,215 a service is one billed item, such as a visit, a test or a procedure
Average patient age63

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $372,547 104 payments
Honoraria $101,109 24 payments
Travel and Lodging $58,158 347 payments · travel or lodging paid or reimbursed, such as to attend a conference
Consulting Fee $33,712 7 payments
Food and Beverage $14,948 233 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Mind Space Mental Health Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

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