Son Nguyen, M.D.
NPI 1699775908 · Psychiatry Physician · Amarillo, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Son Nguyen, M.D. is a Psychiatry Physician provider in Amarillo, TX (NPI 1699775908).
Provider details
- NPI number
- 1699775908
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- H1814 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
106 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 55 | $99 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 51 | $69 |
Typical Medicare-allowed amounts for these services range $69–$99 (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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 105 | 14 |
| Quetiapine Fumarate | 87 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 71 | — |
| Oxcarbazepine | 63 | — |
| Ziprasidone Hcl | 63 | — |
| Lorazepam | 60 | — |
| Benztropine Mesylate | 57 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$165 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-28
- Last updated
- 2009-10-22
Frequently asked questions
- What is Son Nguyen's NPI number?
- Son Nguyen's National Provider Identifier (NPI) is 1699775908, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Son Nguyen's specialty?
- Son Nguyen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Son Nguyen located?
- Son Nguyen's practice location on file with NPPES is 1015 W 8th Ave, Amarillo, TX 79101-2031.
- What is Son Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Son Nguyen is (806) 371-0083.
- Does Son Nguyen accept Medicare?
- Son Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Son Nguyen's NPI active?
- Yes — Son Nguyen's NPI (1699775908) is active in the NPPES registry as of the last update on 2009-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.