ALEXANDER GAU (DO) – Emergency Medicine Physician, NPI 1801478540
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,791 EMERGENCY MEDICINE in CA
Provider Addresses for ALEXANDER GAU (DO)
26520 CACTUS AVE
MORENO VALLEY, CA 925553927
Phone: (951) 486-5914
Type: Location
19704 QUAIL RIDGE CIR
WALNUT, CA 917894906
Phone: (909) 538-1888
Type: Mailing
26520 CACTUS AVE STE 201
MORENO VALLEY, CA 925553927
Phone: (951) 486-5914
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $171.
Total Amount is formed as General ($171) + Research ($0) + Ownership ($0) = $171.
Last reported payment date: 2024-04-18 • Largest payer in this snapshot: Inari Medical, Inc. ($171).
Total Amount
$171
General + Research + Ownership
Payments
3
Total payment records
General Amount
$171
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Inari Medical, Inc. | $171 |
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: 2024-08-02
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 |
|---|---|---|---|---|
| I20240802001722 | I | Emergency Medicine | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 92555)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | OH | |
| Emergency Medicine | MI | |
| Emergency Medicine | OH | |
| Emergency Medicine | CA | |
| - | DE | |
| Emergency Medicine | CA | |
| Emergency Medicine | CA | |
| - | CA | |
| Emergency Medicine | CA | |
| Emergency Medicine | NY |
Reviews
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