Dr Mark Wayne Williams Sr, MD, PHD - Medicare Surgery in Princeton, IL

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Dr Mark Wayne Williams Sr, MD, PHD is a medicare enrolled "Surgery" physician in Princeton, Illinois. His current practice location is 530 Park Ave E Ste 303, Princeton, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 872-9491.

Dr Mark Wayne Williams Sr is licensed to practice in South Carolina (license number TL25609) 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 1417986001.

Contact Information

Dr Mark Wayne Williams Sr, MD, PHD
530 Park Ave E Ste 303,
Princeton, IL 61356-3903
(815) 872-9491
(815) 875-4060

Map and Direction




Physician's Profile

Full NameDr Mark Wayne Williams Sr
GenderMale
SpecialitySurgery
Location530 Park Ave E Ste 303, Princeton, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1417986001
  • Provider Enumeration Date: 07/03/2006
  • Last Update Date: 10/19/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 9638182314
  • Enrollment ID: I20070817000127

Medical Identifiers

Medical identifiers for Dr Mark Wayne Williams Sr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417986001NPI-NPPES
036116745MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery TL25609 (South Carolina)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 Mark Wayne Williams Sr allows following entities to bill medicare on his behalf.
Entity NameJulia Rackley Perry Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619934833
PECOS PAC ID: 1153312798
Enrollment ID: O20040525000980

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 Mark Wayne Williams Sr 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 Mark Wayne Williams Sr, MD, PHD
530 Park Ave E,
Princeton, IL 61356

Ph: (815) 876-2293		Dr Mark Wayne Williams Sr, MD, PHD
530 Park Ave E Ste 303,
Princeton, IL 61356-3903

Ph: (815) 872-9491

Reviews and Comments


Surgery Doctors in Princeton, IL


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.