William Cash Byer, CRNA - Medicare Certified Registered Nurse Anesthetist (crna) in Bar Harbor, ME

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William Cash Byer, CRNA is a medicare enrolled "Nurse Anesthetist, Certified Registered" in Bar Harbor, Maine. He graduated from nursing school in 2011 and has 14 years of diverse experience with area of expertise as Certified Registered Nurse Anesthetist (crna). He is a member of the group practice Mount Desert Island Hospital and his current practice location is 10 Wayman Ln, Bar Harbor, Maine. You can reach out to his office (for appointments etc.) via phone at (207) 288-5081.

William Cash Byer is licensed to practice in Maine (license number RNA203039) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1285921403.

Contact Information

William Cash Byer, CRNA
10 Wayman Ln,
Bar Harbor, ME 04609-1625
(207) 288-5081
Not Available

Map and Direction




Provider's Profile

Full NameWilliam Cash Byer
GenderMale
SpecialityCertified Registered Nurse Anesthetist (crna)
Experience14 Years
Location10 Wayman Ln, Bar Harbor, Maine
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • William Cash Byer graduated from nursing school in 2011
  NPI Data:
  • NPI Number: 1285921403
  • Provider Enumeration Date: 07/08/2011
  • Last Update Date: 09/28/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 3274702089
  • Enrollment ID: I20201218000107

Medical Identifiers

Medical identifiers for William Cash Byer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285921403NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
367500000XNurse Anesthetist, Certified Registered 9242790 (Florida)Secondary
367500000XNurse Anesthetist, Certified Registered 143046 (Connecticut)Secondary
367500000XNurse Anesthetist, Certified Registered RNA203039 (Maine)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mount Desert Island Hospital094125096343

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. William Cash Byer allows following entities to bill medicare on his behalf.
Entity NameEastern Maine Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790789147
PECOS PAC ID: 2062315161
Enrollment ID: O20040128000088
Entity NameCentral Maine Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689653487
PECOS PAC ID: 2567379563
Enrollment ID: O20040324000441
Entity NameRumford Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205991122
PECOS PAC ID: 3870583511
Enrollment ID: O20040514000890
Entity NameMount Desert Island Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790764512
PECOS PAC ID: 0941250963
Enrollment ID: O20050127000611
Entity NameDown East Community Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700883139
PECOS PAC ID: 6709858194
Enrollment ID: O20050224000683
Entity NameCalais Community Hospital
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1922001049
PECOS PAC ID: 0345649158
Enrollment ID: O20210527002720

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. William Cash Byer is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
William Cash Byer, CRNA
2430 Vanderbilt Beach Rd Ste 108-563,
Naples, FL 34109-2654

Ph: (414) 232-6162		William Cash Byer, CRNA
10 Wayman Ln,
Bar Harbor, ME 04609-1625

Ph: (207) 288-5081

Reviews and Comments


Nurse Anesthetist, Certified Registered Nurses in Bar Harbor, ME

Paula Kay Lavigne, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 10 Wayman Ln, Bar Harbor, ME 04609
Phone: 207-661-2018    
Rachael F Sharp,
Nurse Anesthetist - CR
Medicare: Not Enrolled in Medicare
Practice Location: 10 Wayman Ln, Mount Desert Island Hospital, Bar Harbor, ME 04609
Phone: 207-288-5081    Fax: 207-288-7024
Mr. Ralph A Erickson, CRNA
Nurse Anesthetist - CR
Medicare: Not Enrolled in Medicare
Practice Location: 10 Wayman Ln, Bar Harbor, ME 04609
Phone: 207-288-5081    Fax: 207-288-7024
Mr. Christopher W Price, CRNA
Nurse Anesthetist - CR
Medicare: Not Enrolled in Medicare
Practice Location: 10 Wayman Ln, Mount Desert Island Hospital, Bar Harbor, ME 04609
Phone: 207-288-5081    Fax: 207-288-8600
Mrs. Shannon Murray, CRNA, PMHNP-BC
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 10 Wayman Ln, Bar Harbor, ME 04609
Phone: 207-288-5081    
Katelynn Elizabeth Badger, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 10 Wayman Ln, Bar Harbor, ME 04609
Phone: 207-288-5081    Fax: 207-288-8620

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.