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Internal Medicine

Arnold Lim, MD

Works at hospitals in Grafton, WI · Milwaukee, WI · Wisconsin

Summary

Arnold Lim, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Grafton, WI and Milwaukee, WI. NPI 1780611103. 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 Arnold Lim, 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
32Years since medical school (graduated 1994)
MaleGender (as listed)
Rheumatic Disease CenterGroup practice

Quick answers

Which hospitals does Arnold Lim work at?
Medicare's official clinician data lists Arnold Lim at 2 hospitals: Aurora Medical Center and Aurora St Lukes Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Arnold Lim see patients?
Medicare's clinician data lists 1 practice location in Glendale, WI. Call before your visit to confirm the address.
What is Arnold Lim's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Rheumatology.
Does Arnold Lim accept Medicare assignment?
Yes. Medicare's clinician data says Arnold Lim 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 Arnold Lim?
(414) 351-4009, as listed in official Medicare / NPI Registry data.
What is Arnold Lim's NPI number?
1780611103. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Arnold Lim works

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

Group practices

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

  • Rheumatic Disease Center8 clinicians in the group

Specialties

Find other Internal Medicine doctors in Wisconsin →

Other internal medicine doctors in Glendale

Clinicians with the same Medicare primary specialty in Glendale, WI — not a recommendation.

All internal medicine doctors in Glendale →

Clinician information

CredentialMD
Graduation year1994
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1780611103
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