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Internal Medicine

Whitney Ngo, DO

Works at hospitals in Laguna Hills, CA · California

Summary

Dr. Whitney Ngo, DO is an internal medicine doctor at 16333 Harbor Blvd, Fountain Valley, CA 92708. Phone: (714) 549-1300. Accepts Medicare assignment. NPI 1497405112. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 16333 Harbor Blvd, Fountain Valley, CA 92708 · Directions (5 more locations)
  • Phone: (714) 549‑1300
  • Medicare: Accepts Medicare assignment
  • Hospital: Memorialcare Saddleback Medical Center
  • Group practice: Memorialcare Medical Foundation
  • Medical school: graduated 2022 (4 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Whitney Ngo, 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 Whitney Ngo accept Medicare assignment?
Yes. Medicare's clinician data says Whitney Ngo 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 Whitney Ngo's NPI number?
1497405112. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Whitney Ngo works

Medicare's Facility Affiliation Data lists Whitney Ngo at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Whitney Ngo is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Whitney Ngo as a member of this group (CMS data updated October 2, 2026).

  • Memorialcare Medical Foundation566 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Fountain Valley

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

All internal medicine doctors in Fountain Valley →

Other clinicians in Memorialcare Medical Foundation

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

Clinician information

CredentialDO
Graduation year2022 (4 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1497405112
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians