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Family Practice

Christine L. Cao, DO

Sees patients in San Diego, CA · La Mesa, CA · California

Summary

Dr. Christine L. Cao, DO is a family doctor at 4647 Zion Ave, San Diego, CA 92120. Phone: (619) 528-5000. Accepts Medicare assignment. In 2024, Christine L. Cao had 16 Original Medicare patients and 30 services. NPI 1407286057. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 4647 Zion Ave, San Diego, CA 92120 · Directions (1 more location)
  • Phone: (619) 528‑5000
  • Medicare: Accepts Medicare assignment
  • Group practice: Southern California Permanente Medical Group
  • Medical school: graduated 2013 (13 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Christine L. Cao, 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 Christine L. Cao accept Medicare assignment?
Yes. Medicare's clinician data says Christine L. Cao 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.
How many Medicare patients does Christine L. Cao see?
In 2024, CMS data shows 16 Original Medicare patients and 30 services for Christine L. Cao. This counts Original Medicare only and measures volume, not quality.
What is Christine L. Cao's NPI number?
1407286057. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Christine L. Cao, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients16
Services billed to Medicare30
Different services or procedures8
Participating Medicare providerYes
Average age of these patients67

Practice locations

Addresses where Christine L. Cao is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Christine L. Cao 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 San Diego

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

All family doctors in San Diego →

Other clinicians in Southern California Permanente Medical Group

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

Clinician information

CredentialDO
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1407286057
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians