Mai Phuong Nguyen, MD
NPI 1275741969 · Psychosomatic Medicine Physician · Truckee, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mai Phuong Nguyen, MD is a Psychosomatic Medicine Physician provider in Truckee, CA (NPI 1275741969).
Provider details
- NPI number
- 1275741969
- Entity type
- Individual
- Primary specialty
- Psychosomatic Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- G070301 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
295 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 226 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 69 | $130 |
Typical Medicare-allowed amounts for these services range $92–$130 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clozapine | 334 | 20 |
| Olanzapine | 187 | 17 |
| Quetiapine Fumarate | 92 | — |
| Lithium Carbonate | 83 | — |
| Risperidone | 79 | — |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 68 | — |
| Buspirone Hcl | 60 | — |
| Paliperidone Palmitatebrand: Invega Sustenna |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-18
- Last updated
- 2007-12-28
Frequently asked questions
- What is Mai Phuong Nguyen's NPI number?
- Mai Phuong Nguyen's National Provider Identifier (NPI) is 1275741969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mai Phuong Nguyen's specialty?
- Mai Phuong Nguyen is listed in the NPPES registry with a primary specialty of Psychosomatic Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mai Phuong Nguyen located?
- Mai Phuong Nguyen's practice location on file with NPPES is 10356 Donner Pass Road, Truckee, CA 96162.
- What is Mai Phuong Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Mai Phuong Nguyen is (530) 587-5877.
- Does Mai Phuong Nguyen accept Medicare?
- Mai Phuong Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mai Phuong Nguyen's NPI active?
- Yes — Mai Phuong Nguyen's NPI (1275741969) is active in the NPPES registry as of the last update on 2007-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.