DR. ALEXANDRA HERNDON (MD) – Emergency Medicine Physician, NPI 1164953857
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,790 EMERGENCY MEDICINE in CA
Provider Addresses for DR. ALEXANDRA HERNDON (MD)
101 The City Dr S
Orange, CA 928683201
Phone: (714) 880-7812
Type: Location
251 E Huron St
Chicago, IL 606112908
Phone: (312) 926-2000
Type: Location
200, East Ontario Street, Streeterville, Near North Side, Chicago, Cook County, Illinois, 60611, United States
CHICAGO, IL 606113284
Phone: (312) 926-6493
Type: Location
Murasaki Lounge, 211, East Ontario Street, Streeterville, Near North Side, Chicago, Cook County, Illinois, 60611, United States
SUITE 200
CHICAGO, IL 606112908
Phone: (312) 926-6493
Type: Mailing
1616 E MARION ST
SEATTLE, WA 981224639
Phone: (206) 549-3284
Type: Mailing
2211 NE 139TH ST
VANCOUVER, WA 986862742
Phone: (360) 487-1000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2025-06-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20210513001555 | I | Emergency Medicine | CA | TBD |
| I20220120001672 | I | Emergency Medicine | TX | TBD |
| I20250617003704 | I | Emergency Medicine | WA | 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 |
|---|---|---|---|---|
| 99283 | Emergency department visit with low level of medical decision making | 101 | 97 | $0 |
| 99282 | Emergency department visit with straightforward medical decision making | 78 | 75 | $0 |
| 99285 | Emergency department visit with high level of medical decision making | 56 | 56 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 44 | 44 | $0 |
Insurance plans in this area (ZIP 92868)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | OR | |
| Emergency Medicine | OR | |
| - | CA | |
| Emergency Medicine | UT | |
| Emergency Medicine | KY | |
| Emergency Medicine | OR | |
| Emergency Medicine | NY | |
| Emergency Medicine | WA | |
| Emergency Medicine | OR | |
| Emergency Medicine | OR |
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