JOHN CROGHAN (M.D.) – Internal Medicine Physician, NPI 1790724060
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,824 INTERNAL MEDICINE in IL
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Provider Addresses for JOHN CROGHAN (M.D.)
710, Oak Street, Winnetka, New Trier Township, Cook County, Illinois, 60093, United States
WINNETKA, IL 600932522
Phone: (847) 986-6770
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)
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: 2005-09-29
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 |
|---|---|---|---|---|
| I20050929000673 | 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 |
|---|---|---|---|---|
| J0897 | Injection, denosumab, 1 mg | 1,380 | 19 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 986 | 178 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 252 | 147 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 145 | 125 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 129 | 78 | $0 |
Insurance plans in this area (ZIP 60093)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | IL | 90670 | Pneumococcal vaccine for injection into muscle | 34 | 34 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology), Internal Medicine | IL | |
| Internal Medicine | IL | |
| Pulmonary Disease, Critical Care (Intensivists), Internal Medicine | IL | |
| Internal Medicine | IL | |
| Internal Medicine | IL | |
| Internal Medicine | IL |
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