PAI-HSIANG CHEN (D.O) – Internal Medicine Physician, NPI 1063405892
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
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Provider Addresses for PAI-HSIANG CHEN (D.O)
604, North Santa Anita Avenue, Arcadia, Los Angeles County, California, 91006, United States
# B
ARCADIA, CA 910062722
Phone: (626) 446-2360
Fax: (626) 446-2370
Type: Mailing
West Huntington Drive, Arcadia, Los Angeles County, California, 91006, United States
SUITE 310
ARCADIA, CA 910073462
Phone: (626) 446-2360
Fax: (626) 446-2370
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 45 Open Payments records for all available years, with a total value of $4,081.
Total Amount is formed as General ($4,081) + Research ($0) + Ownership ($0) = $4,081.
Last reported payment date: 2024-12-02 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($751).
Total Amount
$4,081
General + Research + Ownership
Payments
45
Total payment records
General Amount
$4,081
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-02
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $751 |
| Teva Pharmaceuticals USA, Inc. | $346 |
| Phathom Pharmaceuticals, Inc. | $307 |
| Eisai Inc. | $269 |
| AIMMUNE THERAPEUTICS, INC. | $250 |
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: 2004-02-16
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 |
|---|---|---|---|---|
| I20040216001257 | I | Internal 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 180 | 65 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 42 | 42 | $0 |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | 28 | 19 | $0 |
| G0008 | Administration of influenza virus vaccine | 13 | 13 | $0 |
| 90688 | Influenza vaccine, quadrivalent, 0.5 ml dosage | 12 | 12 | $0 |
Insurance plans in this area (ZIP 91006)
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