William S Mattox, APRN, CNP - Medicare Nurse Practitioner in Rockford, IL

William S Mattox, APRN, CNP is a medicare enrolled "Nurse Practitioner - Family" in Rockford, Illinois. He graduated from nursing school in 2014 and has 11 years of diverse experience with area of expertise as Nurse Practitioner. He is a member of the group practice Osf Multi-specialty Group, Hospice Of Kankakee Valley, Inc. and his current practice location is 5666 E State St, Rockford, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 395-4548.

William S Mattox is licensed to practice in Illinois (license number 209.011406) 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 1720492507.

Contact Information

William S Mattox, APRN, CNP
5666 E State St,
Rockford, IL 61108-2425
(815) 395-4548
(815) 639-8501

Map and Direction




Provider's Profile

Full NameWilliam S Mattox
GenderMale
SpecialityNurse Practitioner
Experience11 Years
Location5666 E State St, Rockford, Illinois
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 S Mattox graduated from nursing school in 2014
  NPI Data:
  • NPI Number: 1720492507
  • Provider Enumeration Date: 06/19/2014
  • Last Update Date: 05/09/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 1254657562
  • Enrollment ID: I20160203001436

Medical Identifiers

Medical identifiers for William S Mattox such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1720492507NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
163W00000XRegistered Nurse 041.248851 (Illinois)Secondary
363LF0000XNurse Practitioner - Family 209.011406 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Osf Saint Anthony Medical CenterRockford, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Osf Multi-specialty Group36788897891848
Hospice Of Kankakee Valley, Inc.44866011844

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 S Mattox allows following entities to bill medicare on his behalf.
Entity NameHospice Of Kankakee Valley, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811935240
PECOS PAC ID: 4486601184
Enrollment ID: O20051104000312
Entity NameOsf Multi-specialty Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922445527
PECOS PAC ID: 3678889789
Enrollment ID: O20150904000279

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 S Mattox 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 S Mattox, APRN, CNP
871 Cook Blvd,
Bradley, IL 60915-2620

Ph: (815) 450-7711
William S Mattox, APRN, CNP
5666 E State St,
Rockford, IL 61108-2425

Ph: (815) 395-4548

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).

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