Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William Joseph Vonhofen, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1265760953

William Joseph Vonhofen, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Philadelphia, Pennsylvania. Qualified in 2009, 17 years ago. Practices with Aria Health Physician Services, a 480-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
17
Licensed in
PA
In the registry since
2009
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

10800 Knights Rd
Philadelphia, PA 19114-4200 Not confirmed with CMS for 16 years — call before visiting
Phone: (215) 612-4132
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence RN506758L (PA)

Record details

NPI number1265760953
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorYes
NPI enumeratedNovember 18, 2009
Last updated in NPPESJanuary 5, 2010

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Aria Health Physician Services — 480 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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 patients172
Services billed 176 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Aria Health Physician Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 480 clinicians in the practice; 12 are shown here.

Other providers in Philadelphia