Vamsi Vemireddy, MD

Medicare activity in 2024

Official CMS public-use data for Vamsi Vemireddy, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)153 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)131 services
3. Hospital discharge day management, more than 30 minutes (99239)109 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)103 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%
• Heart failure52%
• Diabetes50%
• Arthritis50%
• Ischemic heart disease48%

Hospitals where Vamsi Vemireddy works

Medicare's Facility Affiliation Data lists Vamsi Vemireddy 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.

• Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050603

Practice locations

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

• 11420 Warner AveFountain Valley, CA 92708 (714) 549‑1300

Group practices

Medicare enrollment lists Vamsi Vemireddy as a member of this group (CMS data updated October 2, 2026).

• Memorialcare Medical Foundation566 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Fountain Valley

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

• Yu-Nan Hsu, DO
• Sujata N. Lalla-Reddy, MD
• Kathryn R. Rigonan, MD
• Winston C. Wong, MD
• Evelyne N. Llorente, MD
• Eric R. Panahi
• Kien-An Duong, MD
• Robert T. Ha, MD

All internal medicine doctors in Fountain Valley →

Other clinicians in Memorialcare Medical Foundation

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

• Noreen M. Hussaini, MD
• Devon D. Holloway, NP
• Randy Galan, MD
• Steven J. Chacko, MD
• Rachael L. Lopez, MD
• Lisa R. Crane, 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