KATIE ALYSSA YAMANISHI (NP) – Registered Nurse, NPI 1992351498
Registered Nurse
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
16,360 NURSE PRACTITIONER in CA
Provider Addresses for KATIE ALYSSA YAMANISHI (NP)
250 Bon Air Rd
Greenbrae, CA 949041702
Phone: (415) 925-7000
Type: Location
CCC Administration Office, 232, Northwest 6th Avenue, Chinatown, Old Town, Portland, Metro, Multnomah County, Oregon, 97209, United States
PORTLAND, OR 972093609
Phone: (503) 294-1681
Type: Mailing
Hooper Detoxification Stabilization Center, 1535, North Williams Avenue, Lloyd District, Portland, Metro, Multnomah County, Oregon, 97227, United States
PORTLAND, OR 972271885
Phone: (503) 238-2067
Type: Location
250 BON AIR RD
GREENBRAE, CA 949041702
Phone:
Type: Mailing
505 PARNASSUS AVE
SAN FRANCISCO, CA 941432204
Phone: (415) 353-2161
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: 2025-09-24
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 |
|---|---|---|---|---|
| I20250924002650 | I | Nurse Practitioner | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 94904)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery | CA | |
| General Surgery | MD | |
| Nurse Practitioner | CA | |
| Vascular Surgery | CA | |
| Nurse Practitioner | CA | |
| General Surgery | CA | |
| P O D I A T R Y | CA | |
| Plastic And Reconstructive Surgery | PA | |
| Colorectal Surgery (Proctology), General Surgery | CA | |
| Nurse Practitioner | CA |
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