CHUN XIAO HSU (MD) – Gastroenterology Physician, NPI 1669597746
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,981 GASTROENTEROLOGY in CA
Provider Addresses for CHUN XIAO HSU (MD)
5767 W CENTURY BLVD STE 400
LOS ANGELES, CA 900455631
Phone:
Type: Mailing
2780 SKYPARK DR STE 125
TORRANCE, CA 905057528
Phone: (310) 530-8013
Fax: (310) 530-8014
Type: Location
23451 MADISON ST STE 290
TORRANCE, CA 905054737
Phone: (310) 375-1246
Fax: (310) 375-0981
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 18 Open Payments records for all available years, with a total value of $380.
Total Amount is formed as General ($380) + Research ($0) + Ownership ($0) = $380.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: ABBVIE INC. ($240).
Total Amount
$380
General + Research + Ownership
Payments
18
Total payment records
General Amount
$380
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $240 |
| Gilead Sciences, Inc. | $45 |
| Merck Sharp & Dohme LLC | $37 |
| Ipsen Biopharmaceuticals, Inc | $20 |
| Celltrion USA Inc. | $20 |
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: 2019-01-14
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 |
|---|---|---|---|---|
| I20190114001097 | I | Gastroenterology | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 158 | 61 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 58 | 39 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 51 | 51 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 48 | 46 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 35 | 35 | $0 |
Insurance plans in this area (ZIP 90045)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| Gastroenterology, Internal Medicine | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| Gastroenterology, Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA |
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