BRENDA N HAYAKAWA (MD) – Emergency Medicine Physician, NPI 1679527386
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,791 EMERGENCY MEDICINE in CA
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Provider Addresses for BRENDA N HAYAKAWA (MD)
Woodland Hills Post Office, Oxnard Street, Warner Center, Woodland Hills-Warner Center Neighborhood Council District, Los Angeles, Los Angeles County, California, 91367, United States
WOODLAND HILLS, CA 913654419
Phone: (800) 358-9787
Fax: (818) 587-2493
Type: Mailing
San Dimas Community Hospital, 1350, West Covina Boulevard, San Dimas, Los Angeles County, California, 91773, United States
SAN DIMAS, CA 917733245
Phone: (909) 599-6811
Fax: (818) 587-2493
Type: Location
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 $174.
Total Amount is formed as General ($174) + Research ($0) + Ownership ($0) = $174.
Last reported payment date: 2024-05-09 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($125).
Total Amount
$174
General + Research + Ownership
Payments
3
Total payment records
General Amount
$174
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $125 |
| Gilead Sciences, Inc. | $49 |
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: 2004-10-21
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 |
|---|---|---|---|---|
| I20041021000687 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 242 | 236 | $0 |
| 99285 | Emergency department visit with high level of medical decision making | 217 | 213 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 114 | 110 | $0 |
| 99291 | Critical care, first 30-74 minutes | 69 | 69 | $0 |
Insurance plans in this area (ZIP 91365)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| EMERGENCY MEDICINE | CA | 71010 | X-ray of chest, 1 view, front | 30 | 30 |
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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