DR. CHANG-HWA MARY CHEN (M.D.) – Anesthesiology Physician, NPI 1245287622
Anesthesiology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
6,371 ANESTHESIOLOGY in CA
Provider Addresses for DR. CHANG-HWA MARY CHEN (M.D.)
22809 CHARDONNAY DR
#6
DIAMOND BAR, CA 917655420
Phone: (626) 232-7337
Type: Mailing
PO BOX 512185
LOS ANGELES, CA 900510185
Phone:
Type: Mailing
1500 DUARTE RD
DUARTE, CA 910103012
Phone: (626) 256-4673
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 37 Open Payments records for all available years, with a total value of $52,281.
Total Amount is formed as General ($52,281) + Research ($0) + Ownership ($0) = $52,281.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: Delcath Systems ($52,210).
Total Amount
$52,281
General + Research + Ownership
Payments
37
Total payment records
General Amount
$52,281
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Delcath Systems | $52,210 |
| ABIOMED | $52 |
| Pacira Pharmaceuticals Incorporated | $19 |
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: 2007-12-20
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 |
|---|---|---|---|---|
| I20071220000245 | I | Anesthesiology | 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 |
|---|---|---|---|---|
| 01402 | Anesthesia for procedure for total knee joint replacement | 47 | 46 | $0 |
| 36620 | Insertion of artery tube for blood sampling or infusion through skin | 29 | 29 | $0 |
| 01214 | Anesthesia for total hip replacement | 29 | 29 | $0 |
| 64447 | Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 27 | 27 | $0 |
| 64448 | Continuous infusion of anesthetic agent and/or steroid into thigh nerve (femoral nerve) through catheter | 26 | 25 | $0 |
Insurance plans in this area (ZIP 91765)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ANESTHESIOLOGY | CA | 36620 | Insertion of arterial catheter for blood sampling or infusion, accessed through the skin | 42 | 42 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| A N E S T H E S I O L O G Y | CA | |
| - | CA | |
| A N E S T H E S I O L O G Y | CA | |
| - | CA | |
| A N E S T H E S I O L O G Y | CA | |
| A N E S T H E S I O L O G Y | CA | |
| - | CA | |
| Anesthesiology, Pain Management | CA | |
| A N E S T H E S I O L O G Y | CA | |
| A N E S T H E S I O L O G Y | CA |
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