ESTHER HWANG – Physician Assistant, NPI 1851696595
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
10,686 PHYSICIAN ASSISTANT in CA
Provider Addresses for ESTHER HWANG
4318 MAINE AVE
SUITE B
BALDWIN PARK, CA 917063324
Phone: (818) 857-8785
Type: Location
218 KENSINGTON LN
LA HABRA, CA 906317395
Phone:
Type: Mailing
2140 GRAND AVE
CHINO HILLS, CA 917096800
Phone: (818) 857-8785
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 155 Open Payments records for all available years, with a total value of $3,769.
Total Amount is formed as General ($3,769) + Research ($0) + Ownership ($0) = $3,769.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: LEO Pharma Inc. ($594).
Total Amount
$3,769
General + Research + Ownership
Payments
155
Total payment records
General Amount
$3,769
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| LEO Pharma Inc. | $594 |
| GENZYME CORPORATION | $588 |
| Amgen Inc. | $470 |
| Novartis Pharmaceuticals Corporation | $429 |
| Regeneron Healthcare Solutions, Inc. | $194 |
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: 2011-02-22
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20110222001092 | I | Physician Assistant | 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 91706)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | CA | |
| Nurse Practitioner | CA | |
| Physician Assistant | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Physician Assistant | CA | |
| Physician Assistant | CA | |
| Physician Assistant | CA | |
| Physician Assistant | CA |
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