DR. MASAKI NAGAMINE (MD) – Vascular Neurology Physician, NPI 1144751660
Vascular Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,479 NEUROLOGY in CA
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Provider Addresses for DR. MASAKI NAGAMINE (MD)
UCI Medical Center, 101, The City Drive South, Orange, Orange County, California, 92868, United States
400
ORANGE, CA 928683201
Phone: (714) 456-5691
Type: Mailing
200 S MANCHESTER AVE STE 300
ORANGE, CA 928683219
Phone: (714) 456-2986
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $48.
Total Amount is formed as General ($48) + Research ($0) + Ownership ($0) = $48.
Last reported payment date: 2024-04-25 • Largest payer in this snapshot: Bayer Healthcare Pharmaceuticals Inc. ($34).
Total Amount
$48
General + Research + Ownership
Payments
2
Total payment records
General Amount
$48
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-25
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $34 |
| Janssen Scientific Affairs, LLC | $14 |
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: 2022-02-07
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 |
|---|---|---|---|---|
| I20220207000495 | 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 | 105 | 55 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 95 | 94 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 48 | 39 | $0 |
| 99285 | Emergency department visit with high level of medical decision making | 21 | 21 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 20 | 20 | $0 |
Insurance plans in this area (ZIP 92868)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Clinical Psychologist | CA | |
| N E U R O L O G Y | CO | |
| N E U R O L O G Y | CA | |
| N E U R O L O G Y | CA | |
| N E U R O L O G Y | CA | |
| Neurology, Critical Care (Intensivists) | CA | |
| N E U R O L O G Y | CA | |
| N E U R O L O G Y | CA | |
| N E U R O L O G Y | IL | |
| N E U R O L O G Y | MD |
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