DR. KAI ZU (M.D.) – Hematology & Oncology Physician, NPI 1164583639
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,531 HEMATOLOGY/ONCOLOGY in CA
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Provider Addresses for DR. KAI ZU (M.D.)
Sharp Grossmont Hospital, 5555, Grossmont Center Drive, La Mesa, San Diego County, California, 91942, United States
LA MESA, CA 919423019
Phone: (619) 644-3030
Fax: (619) 644-3438
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 116 Open Payments records for all available years, with a total value of $5,870.
Total Amount is formed as General ($4,735) + Research ($1,135) + Ownership ($0) = $5,870.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($2,225).
Total Amount
$5,870
General + Research + Ownership
Payments
116
Total payment records
General Amount
$4,735
General payments
Research Amount
$1,135
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $2,225 |
| Eli Lilly and Company | $1,135 |
| Novartis Pharmaceuticals Corporation | $270 |
| Celgene Corporation | $203 |
| PFIZER INC. | $184 |
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: 2004-06-30
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 |
|---|---|---|---|---|
| I20040630000824 | I | Hematology/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 |
|---|---|---|---|---|
| J0881 | Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 73,675 | 35 | $0 |
| J1439 | Injection, ferric carboxymaltose, 1 mg | 59,250 | 36 | $0 |
| J9299 | Injection, nivolumab, 1 mg | 50,040 | 14 | $0 |
| J0897 | Injection, denosumab, 1 mg | 4,020 | 16 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 2,015 | 30 | $0 |
Insurance plans in this area (ZIP 91942)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | CA | 96375 | Injection of different drug or substance into a vein for therapy, diagnosis, or prevention | 168 | 37 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Medical Oncology, Hematology, Internal Medicine, Hematology/Oncology | CA | |
| - | 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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