Jean Louis E. Horn

Medicare activity in 2024

Official CMS public-use data for Jean Louis E. Horn, 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.

Most frequent services

1. Continuous infusion of anesthetic agent and/or steroid into arm nerve bundle through catheter (64416)31 services
2. Continuous infusion of anesthetic agent and/or steroid into thigh nerve (femoral nerve) through catheter (64448)19 services
3. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)11 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High cholesterol75%
• Arthritis66%
• High blood pressure64%
• Diabetes29%
• Ischemic heart disease27%
• Anxiety23%

Hospitals where Jean Louis E. Horn works

Medicare's Facility Affiliation Data lists Jean Louis E. Horn 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.

• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Jean Louis E. Horn is enrolled with Medicare (CMS data updated October 2, 2026).

• 300 Pasteur DrStanford, CA 94305 (650) 723‑4000
• 420 Broadway StRedwood City, CA 94063 (650) 723‑4000
• 450 Broadway StRedwood City, CA 94063 (650) 723‑4000

Group practices

Medicare enrollment lists Jean Louis E. Horn as a member of this group (CMS data updated October 2, 2026).

• Stanford Health Care3,122 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in California →

Other anesthesiologists in Stanford

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

• Allen Ninh, MD
• Michael I. Chen, MD
• Larissa M. Kiwakyou, MD
• Milap V. Rakholia, MD
• Albert H. Tsai, MD
• Kazuo Ando
• Martin S. Angst, MD
• Felipe D. Perez

All anesthesiologists in Stanford →

Other clinicians in Stanford Health Care

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

• Weijia Chua, MD
• Maria P. Claflin, NP
• Allen Ninh, MD
• Jena R. Pizula, MD
• Matthew P. Mesias, MD
• Ranjana Advani, 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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians