LINNEA I CHAP (M.D.) – Hematology & Oncology Physician, NPI 1700839362
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
550 MEDICAL ONCOLOGY in CA
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Provider Addresses for LINNEA I CHAP (M.D.)
16600, Adlon Road, Encino Neighborhood Council District, Los Angeles, Los Angeles County, California, 91436, United States
ENCINO, CA 914363718
Phone: (310) 829-5471
Type: Mailing
Wilshire Boulevard, Beverly Hills, Los Angeles County, California, 90048, United States
BEVERLY HILLS, CA 902111958
Phone: (310) 432-8900
Fax: (310) 432-8901
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 459 Open Payments records for all available years, with a total value of $331,623.
Total Amount is formed as General ($331,323) + Research ($300) + Ownership ($0) = $331,623.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($118,910).
Total Amount
$331,623
General + Research + Ownership
Payments
459
Total payment records
General Amount
$331,323
General payments
Research Amount
$300
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $118,910 |
| PFIZER INC. | $109,642 |
| Gilead Sciences, Inc. | $57,879 |
| Seagen Inc. | $29,806 |
| Daiichi Sankyo Inc. | $2,205 |
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: 2005-01-14
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 |
|---|---|---|---|---|
| I20050114000697 | I | Medical Oncology | 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 |
|---|---|---|---|---|
| J0897 | Injection, denosumab, 1 mg | 6,247 | 37 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 468 | 161 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 467 | 160 | $0 |
| 86300 | Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3 | 396 | 151 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 371 | 164 | $0 |
Insurance plans in this area (ZIP 91436)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Radiation Oncology | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Radiation Oncology | CA | |
| - | CA | |
| - | OH |
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