DR. NANCY THIEN VU (M.D.) – Neurology Physician, NPI 1821059957
Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,479 NEUROLOGY in CA
Provider Addresses for DR. NANCY THIEN VU (M.D.)
2929 WESTMINSTER AVE. #2309
SEAL BEACH, CA 90740
Phone: (714) 891-5453
Fax: (714) 891-5346
Type: Mailing
17100 EUCLID ST
FOUNTAIN VALLEY, CA 927084004
Phone: (714) 891-5453
Fax: (714) 891-5346
Type: Location
14571, Magnolia Street, Westminster, Orange County, California, 92683, United States
STE 201
WESTMINSTER, CA 926835574
Phone: (714) 891-5453
Fax: (714) 891-5346
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 307 Open Payments records for all available years, with a total value of $8,973.
Total Amount is formed as General ($8,973) + Research ($0) + Ownership ($0) = $8,973.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: ABBVIE INC. ($1,268).
Total Amount
$8,973
General + Research + Ownership
Payments
307
Total payment records
General Amount
$8,973
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $1,268 |
| EMD Serono, Inc. | $747 |
| SK Life Science, Inc. | $692 |
| UCB, Inc. | $641 |
| Neurocrine BioSciences, Inc. | $487 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-06-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040628000900 | I | Neurology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 764 | 245 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 586 | 225 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 385 | 365 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 141 | 141 | $0 |
| 95816 | Measurement of brain wave activity (eeg), awake and drowsy | 25 | 19 | $0 |
Insurance plans in this area (ZIP 90740)
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