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Emergency Medicine

John B. Lee, MD

Works at hospitals in Mission Viejo, CA · California

Summary

John B. Lee, MD (Emergency Medicine) is listed by Medicare at 1 hospital in Mission Viejo, CA. NPI 1538178272. 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 B. Lee, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
23Years since medical school (graduated 2003)
Loma Linda University School Of MedicineMedical school
MaleGender (as listed)
Mission Viejo Emergency Medical Associates, Inc.Group practice (+1 more)

Quick answers

Which hospitals does John B. Lee work at?
Medicare's official clinician data lists John B. Lee at 1 hospital: Providence Mission Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does John B. Lee see patients?
Medicare's clinician data lists 2 practice locations, including Mission Viejo, CA and Laguna Beach, CA. Call before your visit to confirm the address.
What is John B. Lee's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does John B. Lee accept Medicare assignment?
Yes. Medicare's clinician data says John B. Lee 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 John B. Lee?
(949) 365-2202, as listed in official Medicare / NPI Registry data.
What is John B. Lee's NPI number?
1538178272. 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 B. Lee works

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

Group practices

Medicare enrollment lists John B. Lee as a member of these groups (CMS data updated 2026-10-02).

  • Mission Viejo Emergency Medical Associates, Inc.30 clinicians in the group
  • Mission Viejo Emergency Medical Associates18 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Mission Viejo

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

All emergency medicine doctors in Mission Viejo →

Clinician information

CredentialMD
Medical schoolLoma Linda University School Of Medicine
Graduation year2003
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538178272
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