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MAI PHUONG THUY NGUYEN MD
NPI 1275741969
Psychiatry & Neurology - Psychosomatic Medicine in Truckee, CA

Active since May 18, 2007PECOS Enrolled
10356 DONNER PASS ROAD, TRUCKEE, CA 96162(530) 587-5877(530) 587-5877 Get Directions Write a Review

NPPES record last updated: December 28, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mai Phuong Thuy Nguyen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MAI PHUONG THUY NGUYEN MD (NPI 1275741969) is an individual psychosomatic medicine provider in Truckee, California, licensed in California (G070301) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275741969
Entity TypeIndividualFemale
Primary Taxonomy2084P0015X
Provider Legal NameMAI PHUONG THUY NGUYENCredential: MD
Location Address10356 DONNER PASS ROADTruckee, CA 96162
Mailing AddressPo Box 10047Truckee, CA 96162 · (530) 587-5877 · Fax (530) 582-6896
Phone(530) 587-5877
Fax(530) 587-5877
Sole ProprietorYes
Enumeration DateMay 18, 2007
Last NPPES UpdateDecember 28, 2007
✔ NPI 1275741969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Psychosomatic MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084P0015X
License✔ Licensed in CA · G070301
Definition
Psychosomatic Medicine is subspecialty in the diagnosis and treatment of psychiatric disorders and symptoms in complex medically ill patients. This subspecialty includes treatment of patients with acute or chronic medical, neurological, obstetrical or surgical illness in which psychiatric illness is affecting their medical care and/or quality of life such as HIV infection, organ transplantation, heart disease, renal failure, cancer, stroke, traumatic brain injury, high-risk pregnancy and COPD, among others. Patients also may be those who have a psychiatric disorder that is the direct consequence of a primary medical condition, or a somatoform disorder or psychological factors affecting a general medical condition. Psychiatrists specializing in Psychosomatic Medicine provide consultation-liaison services in general medical hospitals, attend on medical psychiatry inpatient units, and provide collaborative care in primary care and other outpatient settings.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License G070301 (CA)
10356 DONNER PASS ROAD, Truckee, CA 96162
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Other Names 1

Other Name (5)Mai Nguyen

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mai Phuong Thuy Nguyen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mai Phuong Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Nevada
46 mi
Mental Health (Including Community Mental Health Center)
500 CROWN POINT CIR STE 120
Grass Valley, CA 95945
  • Reassigned Medicare billing, California enrollment
  • 24 clinicians in this Medicare group
NPI 1982620399 (530) 265-1437

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
226 services44 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
69 services29 patients

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mai Phuong Nguyen's NPI number?

The NPI number for Mai Phuong Nguyen is 1275741969. It was assigned to this individual provider in the NPPES registry on May 18, 2007. The provider is also known as Mai Nguyen.

Where is Mai Phuong Nguyen located?

Mai Phuong Nguyen practices at 10356 Donner Pass Road, Truckee, CA 96162. The listed phone number is (530) 587-5877.

What is Mai Phuong Nguyen's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychosomatic Medicine, with taxonomy code 2084P0015X.

Is Mai Phuong Nguyen enrolled in Medicare?

Yes. Mai Phuong Nguyen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mai Phuong Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mai Phuong Nguyen reassigns Medicare benefits to County Of Nevada (Grass Valley, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mai Phuong Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mai Phuong Nguyen was last updated on December 28, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.