Dr William A Martinez, MD - Medicare Family Practice in Libertyville, IL

Dr William A Martinez, MD is a medicare enrolled "Family Medicine" physician in Libertyville, Illinois. He graduated from medical school in 1986 and has 38 years of diverse experience with area of expertise as Family Practice. His current practice location is 1870 W Winchester Rd, Suite 145, Libertyville, Illinois. You can reach out to his office (for appointments etc.) via phone at (847) 996-0700.

Dr William A Martinez is licensed to practice in Illinois (license number 036099225) 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 1144212382.

Contact Information

Dr William A Martinez, MD
1870 W Winchester Rd, Suite 145,
Libertyville, IL 60048-5358
(847) 996-0700
(847) 996-0679

Map and Direction




Physician's Profile

Full NameDr William A Martinez
GenderMale
SpecialityFamily Practice
Experience38 Years
Location1870 W Winchester Rd, Libertyville, 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:
  • Dr William A Martinez graduated from medical school in 1986
  NPI Data:
  • NPI Number: 1144212382
  • Provider Enumeration Date: 08/15/2005
  • Last Update Date: 12/09/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 7911006747
  • Enrollment ID: I20070620000244

Medical Identifiers

Medical identifiers for Dr William A Martinez such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144212382NPI-NPPES
036099225MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 036099225 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advocate Condell Medical CenterLibertyville, ILHospital

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 A Martinez allows following entities to bill medicare on his behalf.
Entity NameWilliam A. Martinezmdsc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982829321
PECOS PAC ID: 2769581594
Enrollment ID: O20070620000215

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 A Martinez 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 A Martinez, MD
1870 W Winchester Rd, Suite 145,
Libertyville, IL 60048-5358

Ph: (847) 996-0700
Dr William A Martinez, MD
1870 W Winchester Rd, Suite 145,
Libertyville, IL 60048-5358

Ph: (847) 996-0700

Reviews and Comments


Family Medicine Doctors in Libertyville, IL

Dr. Lisa Anne Newman, MD
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Phone: 847-680-3666    Fax: 847-680-3994
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Dr. Katherine M Blake, D.O.
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Practice Location: 131 E Park Ave Ste 103, Libertyville, IL 60048
Phone: 847-984-3290    Fax: 847-255-2015
Dr. George Bernard Elvove, M.D.
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Amanda Jane Wojciechowski, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 825 S Milwaukee Ave, Libertyville, IL 60048
Phone: 475-732-8008    

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.