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Emergency Medicine

Megan E. Guy, MD

Works at hospitals in Avalon, CA · Orange, CA · California

Summary

Megan E. Guy, MD (Emergency Medicine) is listed by Medicare at 2 hospitals in Avalon, CA and Orange, CA. NPI 1215424502. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Megan E. Guy, 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
May acceptAccepts Medicare assignment
8Years since medical school (graduated 2018)
FemaleGender (as listed)
Regents of the University ofGroup practice (+1 more)

Quick answers

Which hospitals does Megan E. Guy work at?
Medicare's official clinician data lists Megan E. Guy at 2 hospitals: Catalina Island Medical Center and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Megan E. Guy see patients?
Medicare's clinician data lists 2 practice locations, including Avalon, CA and Orange, CA. Call before your visit to confirm the address.
What is Megan E. Guy's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Megan E. Guy accept Medicare assignment?
Medicare's clinician data says Megan E. Guy may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
What is the phone number for Megan E. Guy?
(310) 510-0700, as listed in official Medicare / NPI Registry data.
What is Megan E. Guy's NPI number?
1215424502. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Megan E. Guy works

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

Group practices

Medicare enrollment lists Megan E. Guy as a member of these groups (CMS data updated 2026-10-02).

  • Regents of the University of129 clinicians in the group
  • Avalon Medical Development Corporation30 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Avalon

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

All emergency medicine doctors in Avalon →

Clinician information

CredentialMD
Graduation year2018
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1215424502
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