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

Internal Medicine

Yoo Won Lim, MD

Sees patients in San Marcos, CA · California

Summary

Yoo Won Lim, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in San Marcos, CA. NPI 1447754940. 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 Yoo Won 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
8Years since medical school (graduated 2018)
Hofstra North Shore - Lij School Of MedicineMedical school
FemaleGender (as listed)
Southern California Permanente Medical GroupGroup practice

Quick answers

Where does Yoo Won Lim see patients?
Medicare's clinician data lists 1 practice location in San Marcos, CA. Call before your visit to confirm the address.
What is Yoo Won Lim's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Yoo Won Lim accept Medicare assignment?
Yes. Medicare's clinician data says Yoo Won 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 Yoo Won Lim?
(619) 528-5000, as listed in official Medicare / NPI Registry data.
What is Yoo Won Lim's NPI number?
1447754940. 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 Yoo Won Lim is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Marcos

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

All internal medicine doctors in San Marcos →

Clinician information

CredentialMD
Medical schoolHofstra North Shore - Lij School Of Medicine
Graduation year2018
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447754940
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