Maribeth S. Ruiz, MD

Hospitals where Maribeth S. Ruiz works

Medicare's Facility Affiliation Data lists Maribeth S. Ruiz 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 - FresnoFresno, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050710

Practice locations

Addresses where Maribeth S. Ruiz is enrolled with Medicare (CMS data updated October 2, 2026).

• 7373 W LaneStockton, CA 95210 (209) 476‑2000

Group practices

Medicare enrollment lists Maribeth S. Ruiz as a member of this group (CMS data updated October 2, 2026).

• Permanente Medical Group Inc10,996 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Stockton

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

• Jasmine Ghuman, MD
• Silpa Anand, MD
• Nudrat Pirzada, MD
• Velummylum Prabaharan, MD
• Priya Jagannathan, MD
• Radhika M. Kadakia, MD
• Diego F. Ferro, MD
• Dustin M. Lopes, DO

All internal medicine doctors in Stockton →

Other clinicians in Permanente Medical Group Inc

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

• Baljinder S. Sidhu, MD
• Satinder Pal, MD
• Mickey Ni, MD
• James H. Wong, OD
• Rajivinder S. Brar, DO
• Jena B. Torres, 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