PETERSON TSAI (D.O.) – Family Medicine Physician, NPI 1629054879
Family Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
13,190 FAMILY PRACTICE in CA
Provider Addresses for PETERSON TSAI (D.O.)
23622 Calabasas Rd
STE 250
Calabasas, CA 913021549
Phone: (818) 591-3534
Type: Location
500 NE MULTNOMAH ST STE 100
PORTLAND, OR 972322031
Phone: (800) 813-2000
Type: Mailing
23622, Calabasas Road, Calabasas, Los Angeles County, California, 91302, United States
STE 250
CALABASAS, CA 913021549
Phone: (818) 591-3534
Type: Location
7101 NE 137TH AVE
VANCOUVER, WA 986824933
Phone: (800) 813-2000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2009-11-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20091117000680 | I | Family Practice | WA | TBD |
| I20091117000696 | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 91302)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| U R O L O G Y | TX | |
| Emergency Medicine | OR | |
| D E R M A T O L O G Y | AZ | |
| Nurse Practitioner | OR | |
| Diagnostic Radiology | OR | |
| D E R M A T O L O G Y | WA | |
| - | OR | |
| - | CA | |
| General Surgery | CA | |
| - | OR |
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