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

Family Practice

Lucio Loza Jr., MD

Sees patients in Garden Grove, CA · Brea, CA · Anaheim, CA · California

Summary

Dr. Lucio Loza Jr., MD is a family doctor at 12100 Euclid St, Garden Grove, CA 92840. Phone: (888) 988-2800. Accepts Medicare assignment. NPI 1134352727. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 12100 Euclid St, Garden Grove, CA 92840 · Directions (2 more locations)
  • Phone: (888) 988‑2800
  • Medicare: Accepts Medicare assignment
  • Group practice: Southern California Permanente Medical Group
  • Medical school: graduated 2006 (20 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Lucio Loza Jr., 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 Lucio Loza Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Lucio Loza Jr. 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 Lucio Loza Jr.'s NPI number?
1134352727. 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 Lucio Loza Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Lucio Loza Jr. 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 Family Practice doctors in California →

Other family doctors in Garden Grove

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

All family doctors in Garden Grove →

Other clinicians in Southern California Permanente Medical Group

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

Clinician information

CredentialMD
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1134352727
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