John Mason Erwin, CRNA - Medicare Certified Registered Nurse Anesthetist (crna) in Martinsburg, WV

John Mason Erwin, CRNA is a medicare enrolled "Nurse Anesthetist, Certified Registered" in Martinsburg, West Virginia. He graduated from nursing school in 2012 and has 12 years of diverse experience with area of expertise as Certified Registered Nurse Anesthetist (crna). He is a member of the group practice First Colonies Anesthesia Associates, Llc, First Colonies Anesthesia Associates, Llc and his current practice location is 1006 Tavern Rd, Martinsburg, West Virginia. You can reach out to his office (for appointments etc.) via phone at (304) 267-0556.

John Mason Erwin is licensed to practice in Maryland (license number R181627) 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 1386980969.

Contact Information

John Mason Erwin, CRNA
1006 Tavern Rd,
Martinsburg, WV 25401-2864
(304) 267-0556
(304) 267-1460

Map and Direction




Provider's Profile

Full NameJohn Mason Erwin
GenderMale
SpecialityCertified Registered Nurse Anesthetist (crna)
Experience12 Years
Location1006 Tavern Rd, Martinsburg, West Virginia
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:
  • John Mason Erwin graduated from nursing school in 2012
  NPI Data:
  • NPI Number: 1386980969
  • Provider Enumeration Date: 12/30/2012
  • Last Update Date: 03/09/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7416173356
  • Enrollment ID: I20140729002027

Medical Identifiers

Medical identifiers for John Mason Erwin such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1386980969NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
367500000XNurse Anesthetist, Certified Registered R181627 (Maryland)Primary
163W00000XRegistered Nurse R181627 (Maryland)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Meritus Medical CenterHagerstown, MDHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
First Colonies Anesthesia Associates, Llc8426039744359
First Colonies Anesthesia Associates, Llc8426039744359

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. John Mason Erwin allows following entities to bill medicare on his behalf.
Entity NameFirst Colonies Anesthesia Associates, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740218767
PECOS PAC ID: 8426039744
Enrollment ID: O20040525000119
Entity NameAnesthesia Management Solutions Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467880500
PECOS PAC ID: 8729217955
Enrollment ID: O20140210000652

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. John Mason Erwin 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
John Mason Erwin, CRNA
220 Campus Blvd Ste 210,
Winchester, VA 22601-2889

Ph: (540) 536-5100
John Mason Erwin, CRNA
1006 Tavern Rd,
Martinsburg, WV 25401-2864

Ph: (304) 267-0556

Reviews and Comments


Nurse Anesthetist, Certified Registered Nurses in Martinsburg, WV

Mercedes L Dockeney, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 1006 Tavern Rd, Martinsburg, WV 25401
Phone: 304-267-0556    Fax: 304-267-1460
Cerissa C. Wehrle, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Hospital Dr, Martinsburg, WV 25401
Phone: 304-264-1000    
Ms. Lindsey Paige Evers, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 1006 Tavern Rd, Martinsburg, WV 25401
Phone: 304-267-0556    Fax: 304-267-1460
Donovan Bregg, CRNA
Nurse Anesthetist - CR
Medicare: Medicare Enrolled
Practice Location: 2500 Hospital Dr, Martinsburg, WV 25401
Phone: 304-264-1000    Fax: 304-264-1325
Gregory Alan Cresswell, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Hospital Dr, Martinsburg, WV 25401
Phone: 304-264-1000    
Thomas H Downey, CRNA
Nurse Anesthetist - CR
Medicare: Medicare Enrolled
Practice Location: 1006 Tavern Rd, Martinsburg, WV 25401
Phone: 304-267-5141    Fax: 304-267-5140

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.