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Internal Medicine

Matthew Wai, DO

Works at hospitals in Newport Beach, CA · Irvine, CA · California

Summary

Matthew Wai, DO (Internal Medicine) is listed by Medicare at 2 hospitals in Newport Beach, CA and Irvine, CA. NPI 1881272904. 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 Matthew Wai, 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
5Years since medical school (graduated 2021)
Touro Un College Of Osteopathic Medicine, VallejoMedical school
MaleGender (as listed)
Pacific Hospitalist Associates a Medical CorporationGroup practice

Quick answers

Which hospitals does Matthew Wai work at?
Medicare's official clinician data lists Matthew Wai at 2 hospitals: Hoag Memorial Hospital Presbyterian and Hoag Orthopedic Institute. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Matthew Wai see patients?
Medicare's clinician data lists 2 practice locations, including Newport Beach, CA and Irvine, CA. Call before your visit to confirm the address.
What is Matthew Wai's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Matthew Wai accept Medicare assignment?
Yes. Medicare's clinician data says Matthew Wai 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 Matthew Wai?
(877) 742-4624, as listed in official Medicare / NPI Registry data.
What is Matthew Wai's NPI number?
1881272904. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Matthew Wai works

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

Group practices

Medicare enrollment lists Matthew Wai as a member of this group (CMS data updated 2026-10-02).

  • Pacific Hospitalist Associates a Medical Corporation93 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Newport Beach

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

All internal medicine doctors in Newport Beach →

Clinician information

CredentialDO
Medical schoolTouro Un College Of Osteopathic Medicine, Vallejo
Graduation year2021
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1881272904
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