Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Hospitalist

Peter J. Boxley, MD

Works at hospitals in Lake Forest, IL · San Francisco, CA · Chicago, IL · Illinois, California

Summary

Peter J. Boxley, MD (Hospitalist) is listed by Medicare at 3 hospitals in Lake Forest, IL, San Francisco, CA and Chicago, IL. NPI 1972243566. 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 Peter J. Boxley, 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

HospitalistPrimary specialty
YesAccepts Medicare assignment
4Years since medical school (graduated 2022)
University Of Colorado School Of Medicine, DenverMedical school
MaleGender (as listed)
Northwestern Medical Faculty FoundationGroup practice (+2 more)

Quick answers

Which hospitals does Peter J. Boxley work at?
Medicare's official clinician data lists Peter J. Boxley at 3 hospitals: Northwestern Lake Forest Hospital, UCSF Medical Center and University of Illinois Hospital and Clinics. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Peter J. Boxley see patients?
Medicare's clinician data lists 4 practice locations, including Lake Forest, IL, Chicago, IL and San Francisco, CA. Call before your visit to confirm the address.
What is Peter J. Boxley's specialty?
Medicare lists Hospitalist as the primary specialty.
Does Peter J. Boxley accept Medicare assignment?
Yes. Medicare's clinician data says Peter J. Boxley 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 Peter J. Boxley?
(847) 234-5600, as listed in official Medicare / NPI Registry data.
What is Peter J. Boxley's NPI number?
1972243566. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Peter J. Boxley works

Medicare's Facility Affiliation Data lists Peter J. Boxley 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 Peter J. Boxley is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Peter J. Boxley as a member of these groups (CMS data updated 2026-10-02).

  • Northwestern Medical Faculty Foundation4,503 clinicians in the group
  • The Board of Trustees of the University of Illinois1,150 clinicians in the group
  • Regents of the University of California732 clinicians in the group

Specialties

Find other Hospitalist doctors in Illinois →

Other hospitalists in Lake Forest

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

All hospitalists in Lake Forest →

Clinician information

CredentialMD
Medical schoolUniversity Of Colorado School Of Medicine, Denver
Graduation year2022
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1972243566
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