Nader R. Kaldas, MD

Medicare activity in 2024

Official CMS public-use data for Nader R. Kaldas, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)185 services
2. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)126 services
3. Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)63 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)48 services
5. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)23 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%
• Arthritis41%
• Diabetes40%
• Depression35%
• Ischemic heart disease31%

Hospitals where Nader R. Kaldas works

Medicare's Facility Affiliation Data lists Nader R. Kaldas 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 Care Tri-ValleyPleasanton, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050283

Practice locations

Addresses where Nader R. Kaldas is enrolled with Medicare (CMS data updated October 2, 2026).

• 3200 Kearney StFremont, CA 94538 (510) 490‑1222
• 5555 W Las Positas BlvdPleasanton, CA 94588 (925) 373‑4068
• 87 Fenton StLivermore, CA 94550 (925) 443‑0313
• 87 Fenton St, Suite 100Livermore, CA 94550 (925) 685‑4224

Group practices

Medicare enrollment lists Nader R. Kaldas as a member of these groups (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group
• Jiva Health Inc51 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Fremont

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

• Yinchong E. Mak, MD
• Phong H. Vo, MD
• Daniel L. Taylor, MD
• Steven G. Verbinski, MD
• Gurinder Singh, DO
• Geeta R. Singh, MD
• Joshua C. Kan, MD
• Jonathan Chao

All internal medicine doctors in Fremont →

Other clinicians in Sutter Bay Medical Foundation

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

• Paul S. Jackson, MD
• Gurpreet Sarao, MD
• Mara Valcarcel, PT
• Ronald R. Matuszak, MD
• Kate E. Pettit, MD
• Margaret S. Lo

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