STEPHEN P FERNAU (APRN, CRNA) – Certified Registered Nurse Anesthetist, NPI 1851343123
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
2,265 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in IL
Provider Addresses for STEPHEN P FERNAU (APRN, CRNA)
39W360 Cambridge Ct
Saint Charles, IL 601756706
Phone: (630) 584-1236
Fax: (630) 584-1236
Type: Location
1425 N Randall Rd
Elgin, IL 601232300
Phone: (847) 742-9800
Type: Location
39W360 CAMBRIDGE CT
SAINT CHARLES, IL 601756706
Phone: (630) 584-1236
Fax: (630) 584-1236
Type: Mailing
6635 FAWN PATH LN
CASTLE PINES, CO 801089623
Phone: (630) 809-9321
Type: Mailing
1625 N CAMPBELL AVE
TUCSON, AZ 857194330
Phone: (520) 694-0111
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $57.
Total Amount is formed as General ($57) + Research ($0) + Ownership ($0) = $57.
Last reported payment date: 2024-05-08 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($57).
Total Amount
$57
General + Research + Ownership
Payments
3
Total payment records
General Amount
$57
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $57 |
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: 2023-03-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 4 Medicare enrollment records; no due dates published yet.
Enrollment records
4
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 |
|---|---|---|---|---|
| I20040729000801 | I | Certified Registered Nurse Anesthetist (Crna) | WI | TBD |
| I20071110000159 | I | Certified Registered Nurse Anesthetist (Crna) | IL | TBD |
| I20221205003011 | I | Certified Registered Nurse Anesthetist (Crna) | AZ | TBD |
| I20230328001066 | I | Certified Registered Nurse Anesthetist (Crna) | CO | 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 |
|---|---|---|---|---|
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 23 | 23 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 14 | 14 | $0 |
Insurance plans in this area (ZIP 60175)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | FL | |
| - | AZ | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Clinical Psychologist | AZ | |
| O P H T H A L M O L O G Y | MN | |
| N E U R O S U R G E R Y | AZ | |
| Internal Medicine | AZ | |
| - | MI | |
| Emergency Medicine | AZ | |
| Nurse Practitioner | AZ |
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