Nikki Zahabi, DO

Medicare activity in 2024

Official CMS public-use data for Nikki Zahabi, 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. Injection, romosozumab-aqqg, 1 mg (J3111)41,160 services
2. Injection, tocilizumab, 1 mg (J3262)31,280 services
3. Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0717)30,800 services
4. Injection, denosumab, 1 mg (J0897)21,900 services
5. Injection, ferric carboxymaltose, 1 mg (J1439)19,550 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%
• Osteoporosis73%
• Arthritis66%
• High blood pressure65%
• Ischemic heart disease25%
• Anxiety24%

Hospitals where Nikki Zahabi works

Medicare's Facility Affiliation Data lists Nikki Zahabi 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.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
• Memorialcare Long Beach Medical CenterLong Beach, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050485

Practice locations

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

• 16300 Sand Canyon Ave, Suite 207Irvine, CA 92618 (949) 333‑7580

Group practices

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

• City of Hope Medical Foundation982 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Irvine

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

• Ahsan U. Rashid, MD
• Christian C. Lu, MD
• Roya Hormozdiaran, MD
• Mohammed Siddiqui, MD
• Chienwei T. Chen, MD
• William J. Tsai, MD
• Niroshan Kirupananthan, MD
• John Wikle, MD

All internal medicine doctors in Irvine →

Other clinicians in City of Hope Medical Foundation

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

• Allen Huang, MD
• Farah F. Quyyumi, MD
• Franklyn Rocha Cabrero, MD
• Sherwin G. Dela Cruz, MD
• Steven Gonzales, NP
• Christian C. Lu, 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