MR. STEPHEN A FLAHERTY (CRNA) – Certified Registered Nurse Anesthetist, NPI 1932160066
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,265 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in IL
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Provider Addresses for MR. STEPHEN A FLAHERTY (CRNA)
Northwestern Medicine Kishwaukee Community Hospital, 1, Kish Hospital Drive, DeKalb Township, DeKalb County, Illinois, 60115, United States
DEKALB, IL 601159602
Phone: (815) 756-1521
Fax: (815) 766-9647
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 1 Open Payments records for all available years, with a total value of $24.
Total Amount is formed as General ($24) + Research ($0) + Ownership ($0) = $24.
Last reported payment date: 2024-08-21 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($24).
Total Amount
$24
General + Research + Ownership
Payments
1
Total payment records
General Amount
$24
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $24 |
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: 2005-09-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Past revalidation due date
Earliest CMS due date was 2023-10-31 (951 days ago).
Enrollment records
1
Earliest due date
2023-10-31
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 |
|---|---|---|---|---|
| I20050917000188 | I | Certified Registered Nurse Anesthetist (Crna) | IL | 2023-10-31 |
What to do next
- Verify current status on the CMS Revalidation Lookup Tool immediately.
- Complete revalidation in PECOS or contact your Medicare Administrative Contractor (MAC).
- Overdue revalidation can lead to deactivation of Medicare billing privileges.
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 |
|---|---|---|---|---|
| 00812 | Anesthesia for exam of colon using an endoscope | 26 | 26 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 16 | 16 | $0 |
| 00813 | Anesthesia for procedure on small and large bowel using an endoscope | 15 | 15 | $0 |
| 00910 | Anesthesia for other procedure on urinary system through urethra | 12 | 12 | $0 |
Insurance plans in this area (ZIP 60115)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CERTIFIED REGISTERED NURSE ANESTHET | IL | 00142 | Anesthesia for lens surgery | 18 | 18 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| A N E S T H E S I O L O G Y | VA | |
| Certified Registered Nurse Anesthetist (Crna) | PA | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| A N E S T H E S I O L O G Y | IL | |
| Anesthesiology, Pain Management | IL | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| A N E S T H E S I O L O G Y | IL |
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