Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stephen P Fernau, APRN, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1851343123

Stephen P Fernau, APRN, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Tucson, Arizona. Qualified in 2002, 24 years ago. Practices with US Anesthesia Partners of Colorado Inc, a 479-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
24
Licensed in
IL, WI
In the registry since
2006
Specialties on file
3
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

See every abbreviation used in this directory →

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Practice location Address checks out

1625 N Campbell Ave
Tucson, AZ 85719-4330
Phone: (520) 694-0111
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1425 N Randall Rd, Elgin, IL 60123-2300 — (847) 742-9800
  • 39w360 Cambridge Ct, Saint Charles, IL 60175-6706 — (630) 584-1236

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 209-005622 (IL)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 141905030 (WI)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 041313248 (IL)

Record details

NPI number1851343123
Entity typeIndividual (Type 1)
GenderMale
Credentials APRN , CRNA
Sole proprietorNo
NPI enumeratedMay 16, 2006
Last updated in NPPESJanuary 5, 2025
Certification dateJanuary 5, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Us Anesthesia Partners Of Colorado Inc — 479 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients158
Services billed 160 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $36 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at US Anesthesia Partners of Colorado Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 479 clinicians in the practice; 12 are shown here.

Other providers in Tucson