DR. MICHAEL SHIHJAY CHEN (M.D.) – Family Medicine Physician, NPI 1023005410
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,081 FAMILY PRACTICE in OR
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Provider Addresses for DR. MICHAEL SHIHJAY CHEN (M.D.)
9450, Southwest Barnes Road, Central Beaverton, Portland, Washington County, Oregon, 97225, United States
STE 100
PORTLAND, OR 972256642
Phone: (503) 292-9560
Fax: (503) 292-9510
Type: Mailing
9250, Southwest Hall Boulevard, North Tigard, Tigard, Washington County, Oregon, 97223, United States
TIGARD, OR 972236721
Phone: (503) 221-0161
Fax: (503) 452-3200
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $19.
Total Amount is formed as General ($19) + Research ($0) + Ownership ($0) = $19.
Last reported payment date: 2024-08-19 • Largest payer in this snapshot: Salix Pharmaceuticals, a division of Bausch Health US, LLC ($19).
Total Amount
$19
General + Research + Ownership
Payments
1
Total payment records
General Amount
$19
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $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: 2004-02-05
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 |
|---|---|---|---|---|
| I20040205000606 | I | Family Practice | OR | 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 | 36 | 17 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 28 | 16 | $0 |
Insurance plans in this area (ZIP 97225)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | AZ | |
| - | DC | |
| - | CA | |
| - | CA | |
| Family Practice | OH | |
| - | CA | |
| - | CA | |
| - | CA | |
| Nurse Practitioner | CA | |
| Physician Assistant | MN |
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