Arun Villivalam, MD

Medicare activity in 2024

Official CMS public-use data for Arun Villivalam, 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. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)752 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)592 services
3. Advance care planning, first 30 minutes (99497)244 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)240 services
5. Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)137 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 blood pressure75%
• High cholesterol75%
• Ischemic heart disease41%
• Arthritis34%
• Diabetes33%
• Depression26%

Hospitals where Arun Villivalam works

Medicare's Facility Affiliation Data lists Arun Villivalam 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.

• El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308
• Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050380
• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

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

• 15195 National Ave, Suite 205Los Gatos, CA 95032 (408) 502‑6040

Specialties

• Family Practiceprimary

Find other Family Practice doctors in California →

Other family doctors in Los Gatos

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

• Alex A. Mirabadi, MD
• Jovanne S. Tamparon-Rosette, MD
• Richard H. Dohn, MD
• George A. Whang, DO
• Deborah R. Salom, DO
• Thanhthu Nguyen, MD
• Mary D. Defigard, MD
• Joceliza G. Chaudhary, MD

All family doctors in Los Gatos →

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