Thuc-Quyen Nguyen, M.D.
NPI 1255758637 · Child & Adolescent Psychiatry Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thuc-Quyen Nguyen, M.D. is a Child & Adolescent Psychiatry Physician provider in Palo Alto, CA (NPI 1255758637).
Provider details
- NPI number
- 1255758637
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 149692 (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
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
157 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 117 | $155 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 40 | $82 |
Typical Medicare-allowed amounts for these services range $82–$155 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Escitalopram Oxalate | 97 |
| Risperidone | 74 |
| Cariprazine Hclbrand: Vraylar | 33 |
| Benztropine Mesylate | 26 |
| Trazodone Hcl | 23 |
| Olanzapine | 20 |
| Deutetrabenazinebrand: Austedo | 19 |
| Sertraline Hcl | 19 |
| Clozapine | 17 |
| Fluoxetine Hcl |
Practice location
Mailing address
Additional practice locations (2)
- 300 Pasteur DrStanford, CA 94305-2200Phone: (650) 723-4000
- 221 Longwood AveBwh Psychiatric SpecialtiesBoston, MA 02115-5804Phone: (617) 732-6753
Registry dates
- Enumerated
- 2014-03-24
- Last updated
- 2024-04-29
- Certified
- 2024-04-29
Frequently asked questions
- What is Thuc-Quyen Nguyen's NPI number?
- Thuc-Quyen Nguyen's National Provider Identifier (NPI) is 1255758637, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thuc-Quyen Nguyen's specialty?
- Thuc-Quyen Nguyen is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Thuc-Quyen Nguyen located?
- Thuc-Quyen Nguyen's practice location on file with NPPES is 725 Welch Rd, Palo Alto, CA 94304-1601.
- What is Thuc-Quyen Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thuc-Quyen Nguyen is (650) 497-8000.
- Does Thuc-Quyen Nguyen accept Medicare?
- Thuc-Quyen Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thuc-Quyen Nguyen's NPI active?
- Yes — Thuc-Quyen Nguyen's NPI (1255758637) is active in the NPPES registry as of the last update on 2024-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.