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WILLIAM A. MARTINEZMDSC
NPI 1982829321
Family Medicine in Libertyville, IL

Active since April 13, 2007
1870 W WINCHESTER RD, SUITE 145, LIBERTYVILLE, IL 60048(847) 996-0700(847) 996-0679 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William A. Martinezmdsc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM A. MARTINEZMDSC (NPI 1982829321) is a healthcare organization registered as a family medicine in Libertyville, Illinois and active in the NPI registry since April 2007. The organization lists William Alonso Martinez, President, as its authorized official.

NPPES Registry Identity

NPI1982829321
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameWILLIAM A. MARTINEZMDSC
Location Address1870 W WINCHESTER RD, SUITE 145Libertyville, IL 60048-5358
Mailing Address1870 W Winchester Rd, Suite 145Libertyville, IL 60048-5358 · (847) 996-0700 · Fax (847) 996-0679
Phone(847) 996-0700
Fax(847) 996-0679
Organization SubpartNo
Authorized OfficialWilliam Alonso MartinezPresident · (847) 996-0700
Enumeration DateApril 13, 2007
Last NPPES UpdateAugust 22, 2020
✔ NPI 1982829321 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1870 W WINCHESTER RD, Libertyville, IL 60048
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William A. Martinezmdsc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to William A. Martinezmdsc, which bills Medicare for the services this clinician delivers.

Clinician (1)

William Martinez, MD
Family Practice
NPI 1144212382
1870 W WINCHESTER RD SUITE 145
Libertyville, IL 60048
(847) 996-0700
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William A. Martinezmdsc's NPI number?

The NPI number for William A. Martinezmdsc is 1982829321. It was assigned to this organization in the NPPES registry on April 13, 2007.

Where is William A. Martinezmdsc located?

William A. Martinezmdsc is located at 1870 W Winchester Rd Suite 145, Libertyville, IL 60048. The listed phone number is (847) 996-0700.

What is William A. Martinezmdsc's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is William A. Martinezmdsc enrolled in Medicare?

Yes. William A. Martinezmdsc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William A. Martinezmdsc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to William A. Martinezmdsc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for William A. Martinezmdsc was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.