Shishir K. Shah, MD

Practice locations

Addresses where Shishir K. Shah is enrolled with Medicare (CMS data updated October 2, 2026).

• 12100 Euclid StGarden Grove, CA 92840 (888) 988‑2800
• 411 N Lakeview AveAnaheim, CA 92807 (714) 279‑4000
• 5475 E La Palma AveAnaheim, CA 92807 (714) 279‑6088

Group practices

Medicare enrollment lists Shishir K. Shah as a member of this group (CMS data updated October 2, 2026).

• Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Garden Grove

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

• Michael C. Lam, MD
• Julie Hwynn, MD
• Hyunju Lee, MD
• Michael V. Vu, DO
• Philip Lynn, MD
• Thanh M. Nguyen, MD
• Richard B. Im, MD
• Douglas G. Clark, MD

All internal medicine 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.

• Jithu Susan Mathew
• Austin W. Merrill, DO
• Stephanie Tran, NP
• Nima Akhavan, MD
• Chau L. Nguyen, DO
• Vincent L. Perez, MD

Clinician information

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