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Otolaryngology

Charles K. Oh, MD

Sees patients in Tustin, CA · Los Alamitos, CA · California

Summary

Charles K. Oh, MD (Otolaryngology) is enrolled with Medicare at 3 practice locations in Tustin, CA and Los Alamitos, CA. NPI 1780689042. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(714) 508‑1600 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Charles K. Oh, 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

3Practice locations
OtolaryngologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
30Years since medical school (graduated 1996)
Wayne State University School Of MedicineMedical school
MaleGender (as listed)

Quick answers

Where does Charles K. Oh see patients?
Medicare's clinician data lists 3 practice locations, including Tustin, CA and Los Alamitos, CA. Call before your visit to confirm the address.
What is Charles K. Oh's specialty?
Medicare lists Otolaryngology as the primary specialty.
Does Charles K. Oh accept Medicare assignment?
Yes. Medicare's clinician data says Charles K. Oh 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 Charles K. Oh offer telehealth?
Medicare's clinician data says Charles K. Oh offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Charles K. Oh?
(714) 508-1600, as listed in official Medicare / NPI Registry data.
What is Charles K. Oh's NPI number?
1780689042. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Charles K. Oh is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Otolaryngology doctors in California →

Other ENT doctors in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All ENT doctors in California →

Clinician information

CredentialMD
Medical schoolWayne State University School Of Medicine
Graduation year1996
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1780689042
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians