KAREN L SONNENTHAL (N.P.) – Nurse Practitioner, NPI 1942229463
Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
16,360 NURSE PRACTITIONER in CA
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Provider Addresses for KAREN L SONNENTHAL (N.P.)
San Francisco, Province of Ambo, Huánuco, Peru
P.O. BOX 39000
SAN FRANCISCO, CA 941390001
Phone: (925) 952-2828
Fax: (925) 952-2850
Type: Mailing
Treat Boulevard, Walnut Creek, Contra Costa County, California, 94519, United States
SUITE 120B
WALNUT CREEK, CA 945972168
Phone: (925) 296-9720
Fax: (925) 296-9034
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 23 Open Payments records for all available years, with a total value of $499.
Total Amount is formed as General ($499) + Research ($0) + Ownership ($0) = $499.
Last reported payment date: 2024-03-18 • Largest payer in this snapshot: Lilly USA, LLC ($114).
Total Amount
$499
General + Research + Ownership
Payments
23
Total payment records
General Amount
$499
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $114 |
| PFIZER INC. | $58 |
| GlaxoSmithKline, LLC. | $57 |
| Exact Sciences Corporation | $45 |
| Merck Sharp & Dohme LLC | $43 |
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: 2005-02-22
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 |
|---|---|---|---|---|
| I20050222000380 | 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.
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 | 349 | 205 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 151 | 112 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 124 | 124 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 98 | 88 | $0 |
| 81002 | Urinalysis, manual test | 38 | 36 | $0 |
Insurance plans in this area (ZIP 94139)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Pediatric Medicine | CA | |
| Family Practice | CA | |
| - | CA | |
| - | CA | |
| U R O L O G Y | CA | |
| Internal Medicine, Hospitalist | CA | |
| - | CA | |
| Internal Medicine | CA | |
| Hospice/Palliative Care, Internal Medicine | CA | |
| Physician Assistant | CA |
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