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Internal Medicine

Julie Nguyen, MD

Works at hospitals in Vacaville, CA · California

Summary

Dr. Julie Nguyen, MD is an internal medicine doctor at 1 Quality Dr, Vacaville, CA 95688. Phone: (707) 624-4000. Accepts Medicare assignment. NPI 1568059822. 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: 1 Quality Dr, Vacaville, CA 95688 · Directions
  • Phone: (707) 624‑4000
  • Medicare: Accepts Medicare assignment
  • Hospital: Kaiser Foundation Hospital - Vacaville
  • Group practice: Permanente Medical Group Inc
  • Medical school: University Of Oklahoma College Of Medicine · graduated 2022 (4 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Julie Nguyen, 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 Julie Nguyen accept Medicare assignment?
Yes. Medicare's clinician data says Julie Nguyen 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 Julie Nguyen's NPI number?
1568059822. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Julie Nguyen works

Medicare's Facility Affiliation Data lists Julie Nguyen 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 Julie Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Vacaville

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

All internal medicine doctors in Vacaville →

Other clinicians in Permanente Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of Oklahoma College Of Medicine
Graduation year2022 (4 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1568059822
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