William B Castleberry, ARNP - Medicare Nurse Practitioner in Medford, OR

William B Castleberry, ARNP is a medicare enrolled "Nurse Practitioner - Adult Health" in Medford, Oregon. He graduated from nursing school in 2005 and has 20 years of diverse experience with area of expertise as Nurse Practitioner. He is a member of the group practice Roundup Memorial Hospital Association and his current practice location is 1411 E Mcandrews Rd, Medford, Oregon. You can reach out to his office (for appointments etc.) via phone at (541) 773-1435.

William B Castleberry is licensed to practice in Oregon (license number 201708669NP-PP) 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 1558495424.

Contact Information

William B Castleberry, ARNP
1411 E Mcandrews Rd,
Medford, OR 97504-6107
(541) 773-1435
(541) 858-6828

Map and Direction




Provider's Profile

Full NameWilliam B Castleberry
GenderMale
SpecialityNurse Practitioner
Experience20 Years
Location1411 E Mcandrews Rd, Medford, Oregon
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 B Castleberry graduated from nursing school in 2005
  NPI Data:
  • NPI Number: 1558495424
  • Provider Enumeration Date: 03/15/2007
  • Last Update Date: 10/28/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 8820197726
  • Enrollment ID: I20231102002718

Medical Identifiers

Medical identifiers for William B Castleberry such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558495424NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner CNP-02428 (New Mexico)Secondary
363L00000XNurse Practitioner AP60084651 (Washington)Secondary
364SC0200XClinical Nurse Specialist - Critical Care Medicine AP60084651 (Washington)Secondary
363LA2200XNurse Practitioner - Adult Health 201708669NP-PP (Oregon)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Roundup Memorial HealthcareRoundup, MTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Roundup Memorial Hospital Association539564670711

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 B Castleberry allows following entities to bill medicare on his behalf.
Entity NameRoundup Memorial Hospital Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902908262
PECOS PAC ID: 5395646707
Enrollment ID: O20040119000371

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 B Castleberry 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 B Castleberry, ARNP
1411 E Mcandrews Rd,
Medford, OR 97504-6107

Ph: (541) 773-1435
William B Castleberry, ARNP
1411 E Mcandrews Rd,
Medford, OR 97504-6107

Ph: (541) 773-1435

Reviews and Comments


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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.