GREGORY L KNUTZEN (NP) – Acute Care Nurse Practitioner, NPI 1871554170
Acute Care Nurse Practitioner
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Profile Insights
NPPES metrics only — not quality of care.
16,538 NURSE PRACTITIONER in CA
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Provider Addresses for GREGORY L KNUTZEN (NP)
Box, Lago del Salado, Los Angeles, San Nicolás de los Garza, Nuevo León, 66477, Mexico
LOS ANGELES, CA 900510185
Phone:
Type: Mailing
400, Pepper Avenue, West Colton, Colton, San Bernardino County, California, 92324, United States
COLTON, CA 923241801
Phone: (909) 580-2775
Fax: (909) 580-2115
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 615 Open Payments records for all available years, with a total value of $14,423.
Total Amount is formed as General ($14,423) + Research ($0) + Ownership ($0) = $14,423.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: E.R. Squibb & Sons, L.L.C. ($1,076).
Total Amount
$14,423
General + Research + Ownership
Payments
615
Total payment records
General Amount
$14,423
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| E.R. Squibb & Sons, L.L.C. | $1,076 |
| Novartis Pharmaceuticals Corporation | $1,047 |
| Merck Sharp & Dohme LLC | $892 |
| PFIZER INC. | $592 |
| Janssen Biotech, Inc. | $505 |
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: 2004-06-02
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20040602001529 | 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 | 340 | 97 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 21 | 18 | $0 |
Insurance plans in this area (ZIP 90051)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| E N D O C R I N O L O G Y | CA | |
| P A T H O L O G Y | CA | |
| Diagnostic Radiology | CA | |
| Radiation Oncology | OH | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Physician Assistant | NY | |
| - | CA | |
| Infectious Disease | CA | |
| Hematology/Oncology, Pediatric Medicine | CA |
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