WILLIAM CASH BYER (CRNA) – Certified Registered Nurse Anesthetist, NPI 1285921403
Certified Registered Nurse Anesthetist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
533 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in ME
Provider Addresses for WILLIAM CASH BYER (CRNA)
10 WAYMAN LN
BAR HARBOR, ME 046091625
Phone: (207) 288-5081
Type: Location
2430 VANDERBILT BEACH RD STE 108-563
NAPLES, FL 341092654
Phone: (414) 232-6162
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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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: 2020-12-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20171020002418 | I | Certified Registered Nurse Anesthetist (Crna) | CT | TBD |
| I20190426000652 | I | Certified Registered Nurse Anesthetist (Crna) | NM | TBD |
| I20201218000107 | I | Certified Registered Nurse Anesthetist (Crna) | ME | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 04609)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Clinical Social Worker | ME | |
| Family Practice | ME | |
| Internal Medicine | ME | |
| Cardiovascular Disease (Cardiology), Internal Medicine | ME | |
| - | ME | |
| Clinical Psychologist | ME | |
| Physician Assistant | ME | |
| - | ME | |
| Orthopedic Surgery | ME | |
| Nurse Practitioner | ME |
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