Nancy Vu, M.D.
NPI 1821059957 · Neurology Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Vu, M.D. is a Neurology Physician provider in Fountain Valley, CA (NPI 1821059957).
Provider details
- NPI number
- 1821059957
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G50663 (CA)
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
1,668 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 643 | $122 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 574 | $117 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 348 | $179 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 89 | $178 |
| Measurement of Brain Wave Activity (eeg), Awake and Drowsy95816 | 14 | $59 |
Typical Medicare-allowed amounts for these services range $59–$179 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Memantine Hcl | 323 | 68 |
| Gabapentin | 302 | 63 |
| Levetiracetam | 298 | 34 |
| Donepezil Hcl | 276 | 59 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 184 | 32 |
| Divalproex Sodium | 149 | 18 |
| Pregabalin | 131 | 28 |
| Clonazepam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,935 across 126 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
- 2006-03-29
- Last updated
- 2025-05-01
- Certified
- 2025-05-01
Frequently asked questions
- What is Nancy Vu's NPI number?
- Nancy Vu's National Provider Identifier (NPI) is 1821059957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Vu's specialty?
- Nancy Vu is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Vu located?
- Nancy Vu's practice location on file with NPPES is 17100 Euclid St, Fountain Valley, CA 92708-4004.
- What is Nancy Vu's phone number?
- The practice phone number listed in the NPPES registry for Nancy Vu is (714) 891-5453.
- Does Nancy Vu accept Medicare?
- Nancy Vu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Vu's NPI active?
- Yes — Nancy Vu's NPI (1821059957) is active in the NPPES registry as of the last update on 2025-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.