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

Internal Medicine

Shannon A. Haliko, MD

Sees patients in Irvine, CA · California

Summary

Dr. Shannon A. Haliko, MD is an internal medicine doctor at 114 Pacifica, Suite 130, Irvine, CA 92618. Phone: (949) 257-2644. Accepts Medicare assignment. NPI 1720251911. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 114 Pacifica, Suite 130, Irvine, CA 92618 · Directions
  • Phone: (949) 257‑2644
  • Medicare: Accepts Medicare assignment
  • Group practice: Helixona
  • Medical school: University Of Miami, Lm Miller School Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Shannon A. Haliko, 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 Shannon A. Haliko accept Medicare assignment?
Yes. Medicare's clinician data says Shannon A. Haliko 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 Shannon A. Haliko's NPI number?
1720251911. 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 Shannon A. Haliko is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Shannon A. Haliko as a member of this group (CMS data updated October 2, 2026).

  • Helixona2 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Irvine

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

All internal medicine doctors in Irvine →

Other clinicians in Helixona

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

Clinician information

CredentialMD
Medical schoolUniversity Of Miami, Lm Miller School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720251911
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