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Family Practice

Lawrence T. Kacmar, MD

Works at hospitals in Aurora, IL · Naperville, IL · Winfield, IL … · Illinois

Summary

Lawrence T. Kacmar, MD (Family Practice) is listed by Medicare at 5 hospitals in Aurora, IL, Naperville, IL and Winfield, IL and other places. NPI 1699861682. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Lawrence T. Kacmar, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Family PracticePrimary specialty
YesAccepts Medicare assignment
31Years since medical school (graduated 1995)
Indiana Medical College, School Of Medicine Of Purdue UniversityMedical school
MaleGender (as listed)

Quick answers

Which hospitals does Lawrence T. Kacmar work at?
Medicare's official clinician data lists Lawrence T. Kacmar at 5 hospitals: Copley Memorial Hospital, Edward Hospital, Northwestern Medicine Central Dupage Hospital, OSF Saint Katharine Medical Center and Swedish Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Lawrence T. Kacmar see patients?
Medicare's clinician data lists 3 practice locations, including Crystal Lake, IL, Aurora, IL and Dixon, IL. Call before your visit to confirm the address.
What is Lawrence T. Kacmar's specialty?
Medicare lists Family Practice as the primary specialty.
Does Lawrence T. Kacmar accept Medicare assignment?
Yes. Medicare's clinician data says Lawrence T. Kacmar accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Lawrence T. Kacmar?
(815) 459-7791, as listed in official Medicare / NPI Registry data.
What is Lawrence T. Kacmar's NPI number?
1699861682. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Lawrence T. Kacmar works

Medicare's Facility Affiliation Data lists Lawrence T. Kacmar at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Lawrence T. Kacmar is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Lawrence T. Kacmar as a member of these groups (CMS data updated 2026-10-02).

  • Theoria Medical284 clinicians in the group
  • Complexcare Medical Group Midwest H PLLC127 clinicians in the group

Specialties

Find other Family Practice doctors in Illinois →

Other family doctors in Crystal Lake

Clinicians with the same Medicare primary specialty in Crystal Lake, IL — not a recommendation.

All family doctors in Crystal Lake →

Clinician information

CredentialMD
Medical schoolIndiana Medical College, School Of Medicine Of Purdue University
Graduation year1995
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1699861682
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians