MR. JOHN CLARKE (MD) – Diagnostic Radiology Physician, NPI 1689888422
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,121 DIAGNOSTIC RADIOLOGY in IL
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Provider Addresses for MR. JOHN CLARKE (MD)
2345, West Harrison Street, Tri-Taylor, Near West Side, Chicago, West Chicago Township, Cook County, Illinois, 60612, United States
CHICAGO, IL 606123500
Phone: (504) 717-9733
Type: Mailing
8012 GLENDEVAN ST NW
MASSILLON, OH 446469017
Phone: (504) 717-9733
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2023-09-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20220707001982 | I | Diagnostic Radiology | OH | TBD |
| I20220713002567 | I | Diagnostic Radiology | WI | TBD |
| I20230929001166 | I | Diagnostic Radiology | HI | 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 |
|---|---|---|---|---|
| 70450 | Ct scan head or brain without contrast | 101 | 101 | $0 |
| 71045 | X-ray of chest, 1 view | 43 | 42 | $0 |
| 72125 | Ct scan of upper spine without contrast | 32 | 32 | $0 |
| 74177 | Ct scan of abdomen and pelvis with contrast | 20 | 20 | $0 |
| 70553 | Mri scan of brain before and after contrast | 18 | 18 | $0 |
Insurance plans in this area (ZIP 60612)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NV | |
| Nephrology, Internal Medicine | OH | |
| - | OH | |
| - | MI | |
| Nurse Practitioner | OH | |
| General Surgery, Anesthesiology, Critical Care (Intensivists) | OH | |
| Certified Registered Nurse Anesthetist (Crna) | OH | |
| - | OH | |
| - | MN | |
| Nurse Practitioner | OH |
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