MR. KEITH I BLOCK (MD) – Hematology & Oncology Physician, NPI 1538208764
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,824 INTERNAL MEDICINE in IL
Provider Addresses for MR. KEITH I BLOCK (MD)
PO BOX 4543
CAROL STREAM, IL 601974543
Phone: (800) 834-8787
Fax: (847) 807-4916
Type: Mailing
5230 OLD ORCHARD RD
SKOKIE, IL 600771034
Phone: (847) 492-3040
Fax: (847) 492-3045
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 60 Open Payments records for all available years, with a total value of $1,573.
Total Amount is formed as General ($1,573) + Research ($0) + Ownership ($0) = $1,573.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Lilly USA, LLC ($390).
Total Amount
$1,573
General + Research + Ownership
Payments
60
Total payment records
General Amount
$1,573
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $390 |
| PFIZER INC. | $196 |
| AstraZeneca Pharmaceuticals LP | $145 |
| Celgene Corporation | $94 |
| Daiichi Sankyo Inc. | $87 |
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: 2005-08-20
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 |
|---|---|---|---|---|
| I20050820000041 | I | Internal Medicine | IL | 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 |
|---|---|---|---|---|
| J0185 | Injection, aprepitant, 1 mg | 12,220 | 22 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 1,780 | 27 | $0 |
| Q5111 | Injection, pegfilgrastim-cbqv (udenyca), biosimilar, 0.5 mg | 1,393 | 19 | $0 |
| J2469 | Injection, palonosetron hcl, 25 mcg | 1,230 | 25 | $0 |
| J2506 | Injection, pegfilgrastim, excludes biosimilar, 0.5 mg | 588 | 11 | $0 |
Insurance plans in this area (ZIP 60197)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Registered Dietitian Or Nutrition Professional | IL | |
| Registered Dietitian Or Nutrition Professional | IL | |
| Physician Assistant | IL | |
| - | IL | |
| Medical Oncology | IL |
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