Oanh Nguyen, DO
NPI 1568691251 · Neurology Physician · Tacoma, WA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oanh Nguyen, DO is a Neurology Physician provider in Tacoma, WA (NPI 1568691251).
Provider details
- NPI number
- 1568691251
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- OP60480468 (WA)
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
16 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
361 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 | 158 | $124 |
| Home Sleep Test (hst) With Type III Portable Monitor, Unattended; Minimum of 4 Channels: 2 Respiratory Movement/Airflow, 1 Ecg/Heart Rate and 1 Oxygen SaturationG0399 | 65 | $44 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 40 | $89 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 38 | $159 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $171 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Memantine Hcl | 134 | 28 |
| Levetiracetam | 105 | 22 |
| Sumatriptan Succinate | 79 | 16 |
| Gabapentin | 67 | 19 |
| Lamotrigine | 61 | — |
| Donepezil Hcl | 50 | 17 |
| Erenumab-Aooebrand: Aimovig Autoinjector | 50 | — |
| Topiramate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-02
- Last updated
- 2022-12-18
- Certified
- 2022-12-18
Frequently asked questions
- What is Oanh Nguyen's NPI number?
- Oanh Nguyen's National Provider Identifier (NPI) is 1568691251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oanh Nguyen's specialty?
- Oanh Nguyen is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Oanh Nguyen located?
- Oanh Nguyen's practice location on file with NPPES is 1608 S J St Fl 5, Tacoma, WA 98405-4930.
- What is Oanh Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Oanh Nguyen is (253) 274-7505.
- Does Oanh Nguyen accept Medicare?
- Oanh Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oanh Nguyen's NPI active?
- Yes — Oanh Nguyen's NPI (1568691251) is active in the NPPES registry as of the last update on 2022-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.