Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William A Martinez, MD

Individual provider Family Medicine Physician · NPI 1144212382

Dr. William A Martinez, MD is a Family Practice in Libertyville, Illinois. Qualified in 1986, 40 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
40
Licensed in
IL
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1870 W Winchester Rd Ste 145
Libertyville, IL 60048-5358
Phone: (847) 996-0700
Fax: (847) 996-0679
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036099225 (IL)

Record details

NPI number1144212382
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 15, 2005
Last updated in NPPESDecember 9, 2021
Certification dateDecember 9, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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