Pooneh Esfahani, DO

Hospitals where Pooneh Esfahani works

Medicare's Facility Affiliation Data lists Pooneh Esfahani 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.

• Kaiser Foundation Hospital Fontana/OntarioFontana, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050140

Practice locations

Addresses where Pooneh Esfahani is enrolled with Medicare (CMS data updated October 2, 2026).

• 17284 Slover AveFontana, CA 92337 (909) 427‑5000
• 2295 S Vineyard AveOntario, CA 91761 (909) 724‑5000
• 9961 Sierra AveFontana, CA 92335 (909) 427‑5000

Group practices

Medicare enrollment lists Pooneh Esfahani 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 Fontana

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

• Syeda Ameena, MD
• Sophia Y. Tong, MD
• Ambreen Hasan, MD
• Chong H. Kim, MD
• Charles S. Sabbah, MD
• Charlie H. Yang, MD
• Sena R. St John, DO
• Katherine Y. Lin, DO

All internal medicine doctors in Fontana →

Other clinicians in Southern California Permanente Medical Group

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

• Seong Yeon P. Wong, MD
• Warren J. Xie, OD
• Seong-Cheon P. Kim, MD
• John Park, MD
• Gene Kitamura, MD
• Trang V. Nguyen, 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. 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