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

William J Zwiers, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1013071372

William J Zwiers, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Saginaw, Michigan. Qualified in 2004, 22 years ago. Practices with Saint Mary's Health Services, a 177-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
22
Licensed in
MI
In the registry since
2006
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

700 Cooper Ave
Saginaw, MI 48602-5383
Phone: (989) 583-6200
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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 4704221301 (MI)

Record details

NPI number1013071372
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorNo
NPI enumeratedDecember 21, 2006
Last updated in NPPESFebruary 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 2004 (22 years in practice)
Group practice Saint Mary'S Health Services — 177 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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