MS. KATHERINE ROBIN WILLEMS (FNP) – Family Nurse Practitioner, NPI 1134393069
Family Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for MS. KATHERINE ROBIN WILLEMS (FNP)
15230, Lakeshore Drive, Clearlake Park, Clearlake, Lake County, California, 95422, United States
CLEARLAKE, CA 954228107
Phone: (707) 995-4500
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $60.
Total Amount is formed as General ($60) + Research ($0) + Ownership ($0) = $60.
Last reported payment date: 2024-02-07 • Largest payer in this snapshot: Indivior Inc. ($46).
Total Amount
$60
General + Research + Ownership
Payments
3
Total payment records
General Amount
$60
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Indivior Inc. | $46 |
| Novo Nordisk Inc | $14 |
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: 2013-07-24
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 |
|---|---|---|---|---|
| I20130724000106 | 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 95422)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Internal Medicine | NV | |
| A N E S T H E S I O L O G Y | AZ | |
| A N E S T H E S I O L O G Y | CA | |
| A N E S T H E S I O L O G Y | NV | |
| Internal Medicine | NV | |
| Internal Medicine | NV | |
| Physician Assistant | CA | |
| Diagnostic Radiology | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA |
Reviews
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