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

General Surgery

Charleen L. Kim, MD

Works at hospitals in Concord, CA · Walnut Creek, CA · San Ramon, CA · California

Summary

Charleen L. Kim, MD (General Surgery) is listed by Medicare at 3 hospitals in Concord, CA, Walnut Creek, CA and San Ramon, CA. NPI 1831378850. 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 Charleen L. Kim, 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

General SurgeryPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
22Years since medical school (graduated 2004)
Saint Louis University School Of MedicineMedical school
FemaleGender (as listed)
John Muir Physician NetworkGroup practice

Quick answers

Which hospitals does Charleen L. Kim work at?
Medicare's official clinician data lists Charleen L. Kim at 3 hospitals: John Muir Medical Center - Concord Campus, John Muir Medical Center - Walnut Creek Campus and San Ramon Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Charleen L. Kim see patients?
Medicare's clinician data lists 1 practice location in Walnut Creek, CA. Call before your visit to confirm the address.
What is Charleen L. Kim's specialty?
Medicare lists General Surgery as the primary specialty.
Does Charleen L. Kim accept Medicare assignment?
Yes. Medicare's clinician data says Charleen L. Kim 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 Charleen L. Kim offer telehealth?
Medicare's clinician data says Charleen L. Kim offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Charleen L. Kim?
(925) 933-0984, as listed in official Medicare / NPI Registry data.
What is Charleen L. Kim's NPI number?
1831378850. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Charleen L. Kim works

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

Group practices

Medicare enrollment lists Charleen L. Kim as a member of this group (CMS data updated 2026-10-02).

  • John Muir Physician Network494 clinicians in the group

Specialties

Find other General Surgery doctors in California →

Other general surgeons in Walnut Creek

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

All general surgeons in Walnut Creek →

Clinician information

CredentialMD
Medical schoolSaint Louis University School Of Medicine
Graduation year2004
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1831378850
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