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

Emergency Medicine

Danielle M. Matonis, MD

Works at hospitals in Orange, CA · California

Summary

Danielle M. Matonis, MD (Emergency Medicine) is listed by Medicare at 1 hospital in Orange, CA. NPI 1326542168. 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 Danielle M. Matonis, 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
8Years since medical school (graduated 2018)
Boston University School Of MedicineMedical school
FemaleGender (as listed)
Regents of the University ofGroup practice

Quick answers

Which hospitals does Danielle M. Matonis work at?
Medicare's official clinician data lists Danielle M. Matonis at 1 hospital: UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Danielle M. Matonis see patients?
Medicare's clinician data lists 1 practice location in Orange, CA. Call before your visit to confirm the address.
What is Danielle M. Matonis's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Danielle M. Matonis accept Medicare assignment?
Yes. Medicare's clinician data says Danielle M. Matonis 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 Danielle M. Matonis?
(714) 456-7004, as listed in official Medicare / NPI Registry data.
What is Danielle M. Matonis's NPI number?
1326542168. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Danielle M. Matonis works

Medicare's Facility Affiliation Data lists Danielle M. Matonis 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 Danielle M. Matonis is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Danielle M. Matonis as a member of this group (CMS data updated 2026-10-02).

  • Regents of the University of129 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Orange

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

All emergency medicine doctors in Orange →

Clinician information

CredentialMD
Medical schoolBoston University School Of Medicine
Graduation year2018
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1326542168
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