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

Internal Medicine

Julie Lam, MD

Sees patients in Montebello, CA · California

Summary

Julie Lam, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in Montebello, CA. NPI 1144494659. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Julie Lam, 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
18Years since medical school (graduated 2008)
FemaleGender (as listed)
R. Ruiz MD a Professional CorporationGroup practice

Quick answers

Where does Julie Lam see patients?
Medicare's clinician data lists 1 practice location in Montebello, CA. Call before your visit to confirm the address.
What is Julie Lam's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Julie Lam accept Medicare assignment?
Yes. Medicare's clinician data says Julie Lam 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 Julie Lam?
(323) 712-4811, as listed in official Medicare / NPI Registry data.
What is Julie Lam's NPI number?
1144494659. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Julie Lam is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • R. Ruiz MD a Professional Corporation3 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Montebello

Clinicians with the same Medicare primary specialty in Montebello, CA — not a recommendation.

All internal medicine doctors in Montebello →

Clinician information

CredentialMD
Graduation year2008
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1144494659
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians