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

William Cash Byer, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1285921403

William Cash Byer, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Bar Harbor, Maine. Qualified in 2011, 15 years ago. Practices with Mount Desert Island Hospital, a 59-clinician group and accepts Medicare assignment. Licensed in Connecticut, Florida and Maine.

Years since qualifying
15
Licensed in
CT, FL, ME
In the registry since
2011
Specialties on file
3
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

10 Wayman Ln
Bar Harbor, ME 04609-1625
Phone: (207) 288-5081
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence RNA203039 (ME)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 9242790 (FL)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence 143046 (CT)

Record details

NPI number1285921403
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJuly 8, 2011
Last updated in NPPESSeptember 28, 2020
Certification dateSeptember 28, 2020

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Mount Desert Island Hospital — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Bar Harbor