Ali Gheissari, MD

Medicare activity in 2024

Official CMS public-use data for Ali Gheissari, 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. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)31 services
2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)18 services
3. Replacement of aortic valve through the skin and femoral artery (33361)13 services
4. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)12 services
5. Coronary artery bypass using artery graft, 1 graft (33533)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 blood pressure75%
• High cholesterol75%
• Ischemic heart disease75%
• Diabetes70%
• Heart failure65%
• Chronic kidney disease62%

Hospitals where Ali Gheissari works

Medicare's Facility Affiliation Data lists Ali Gheissari 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.

• PIH Health Good Samaritan HospitalLos Angeles, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050471

Practice locations

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

• 1245 Wilshire BlvdLos Angeles, CA 90017 (213) 482‑2770

Group practices

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

• PIH Health Physicians622 clinicians in the group

Specialties

• Thoracic Surgeryprimary

Find other Thoracic Surgery doctors in California →

Other thoracic surgeons in Los Angeles

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

• Robert Cameron
• Scott M. Atay, MD
• Robert J. Gottner, MD
• Vignesh Raman, MD
• Philicia Moonsamy, MD
• Paul A. Toste Iii, MD
• Oluwole Fajolu, MD
• Kwok Yun, MD

All thoracic surgeons in Los Angeles →

Other clinicians in PIH Health Physicians

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

• Jason Y. Kim
• Rebecca Knight, NP
• Diane Perdue, NP
• Alfredo Castellanos, MD
• William Kurban, MD
• Jacob W. Ries, PA

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