Dr William D Cox Jr, MD - Medicare Orthopaedic Surgery in Crystal Lake, IL

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Dr William D Cox Jr, MD is a medicare enrolled "Orthopaedic Surgery - Sports Medicine" physician in Crystal Lake, Illinois. His current practice location is 420 N Il Route 31, Crystal Lake, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 356-5200.

Dr William D Cox Jr is licensed to practice in Illinois (license number 036080933) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1407928062.

Contact Information

Dr William D Cox Jr, MD
420 N Il Route 31,
Crystal Lake, IL 60012
(815) 356-5200
(815) 356-5262

Map and Direction




Physician's Profile

Full NameDr William D Cox Jr
GenderMale
SpecialityOrthopaedic Surgery - Sports Medicine
Location420 N Il Route 31, Crystal Lake, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1407928062
  • Provider Enumeration Date: 11/15/2006
  • Last Update Date: 10/19/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 0345299673
  • Enrollment ID: I20100105000641

Medical Identifiers

Medical identifiers for Dr William D Cox Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1407928062NPI-NPPES
036080933OtherILSTATE LICENSE
036080933MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207X00000XOrthopaedic Surgery 036080933 (Illinois)Secondary
207XX0005XOrthopaedic Surgery - Sports Medicine 036080933 (Illinois)Primary

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. Dr William D Cox Jr allows following entities to bill medicare on his behalf.
Entity NameCentral Dupage Physician Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033149844
PECOS PAC ID: 5890696231
Enrollment ID: O20040303000601

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. Dr William D Cox Jr 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
Dr William D Cox Jr, MD
420 N Il Route 31,
Crystal Lake, IL 60012-3709

Ph: (815) 356-5200		Dr William D Cox Jr, MD
420 N Il Route 31,
Crystal Lake, IL 60012

Ph: (815) 356-5200

Reviews and Comments


Orthopaedic Surgery Doctors in Crystal Lake, IL

Dr. Savan Dixit Patel, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 420 N Il Route 31, Crystal Lake, IL 60012
Phone: 815-356-5200    Fax: 815-356-5262
Dr. Timothy G Havenhill, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 420 N Il Route 31, Crystal Lake, IL 60012
Phone: 815-356-5200    Fax: 815-356-5262
Dr. Warren S Jablonsky, M.D.
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 420 N Il Route 31, Crystal Lake, IL 60012
Phone: 815-356-5200    Fax: 815-356-5262
Dr. Sam J Biafora, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 420 N Il Route 31, Crystal Lake, IL 60012
Phone: 815-356-5200    Fax: 815-356-5262
Brian Patrick Flanagan, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 420 N Il Route 31, Crystal Lake, IL 60012
Phone: 815-356-5200    Fax: 815-356-5262
Dr. Matthew I Samuelson, M.D.
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 420 N Il Route 31, Crystal Lake, IL 60012
Phone: 815-356-5200    Fax: 815-356-5262

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.