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Internal Medicine

John Anderson, MD

Works at hospitals in Lake Forest, IL · Winfield, IL · McHenry, IL · Illinois

Summary

John Anderson, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Lake Forest, IL, Winfield, IL and McHenry, IL. NPI 1962450049. 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 John Anderson, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
28Years since medical school (graduated 1998)
Midwestern University, Chicago College Of Osteopathic MedMedical school
MaleGender (as listed)
Central Dupage Physician GroupGroup practice

Quick answers

Which hospitals does John Anderson work at?
Medicare's official clinician data lists John Anderson at 3 hospitals: Northwestern Lake Forest Hospital, Northwestern Medicine Central Dupage Hospital and Northwestern Medicine McHenry. This is where the clinician works or has privileges; call the hospital to confirm.
Where does John Anderson see patients?
Medicare's clinician data lists 3 practice locations, including Wheaton, IL and McHenry, IL. Call before your visit to confirm the address.
What is John Anderson's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does John Anderson accept Medicare assignment?
Yes. Medicare's clinician data says John Anderson 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.
Does John Anderson offer telehealth?
Medicare's clinician data says John Anderson offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for John Anderson?
(630) 933-4800, as listed in official Medicare / NPI Registry data.
What is John Anderson's NPI number?
1962450049. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John Anderson works

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

Group practices

Medicare enrollment lists John Anderson as a member of this group (CMS data updated 2026-10-02).

  • Central Dupage Physician Group1,080 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Wheaton

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

All internal medicine doctors in Wheaton →

Clinician information

CredentialMD
Medical schoolMidwestern University, Chicago College Of Osteopathic Med
Graduation year1998
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1962450049
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