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

Otolaryngology

Zrria L. Richardson, MD

Sees patients in Ontario, CA · Fontana, CA · California

Summary

Dr. Zrria L. Richardson, MD is an ENT doctor at 2295 S Vineyard Ave, Ontario, CA 91761. Phone: (909) 724-5000. Accepts Medicare assignment. NPI 1174886113. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: ENT doctor (Medicare lists Otolaryngology)
  • Address: 2295 S Vineyard Ave, Ontario, CA 91761 · Directions (1 more location)
  • Phone: (909) 724‑5000
  • Medicare: Accepts Medicare assignment
  • Group practice: Southern California Permanente Medical Group
  • Medical school: University Of Virginia School Of Medicine · graduated 2012 (14 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Zrria L. Richardson, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Zrria L. Richardson accept Medicare assignment?
Yes. Medicare's clinician data says Zrria L. Richardson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Zrria L. Richardson's NPI number?
1174886113. 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 Zrria L. Richardson is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zrria L. Richardson as a member of this group (CMS data updated October 2, 2026).

  • Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

Find other Otolaryngology doctors in California →

Other ENT doctors in Ontario

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

All ENT doctors in Ontario →

Other clinicians in Southern California Permanente Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Virginia School Of Medicine
Graduation year2012 (14 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1174886113
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 October 2, 2026, retrieved October 29, 2026
  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