Jaffar A. Tremazi, MD

Medicare activity in 2024

Official CMS public-use data for Jaffar A. Tremazi, 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, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)889 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)492 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)42 services
4. Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)31 services
5. Aspiration and/or injection of fluid from large joint (20610)30 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%
• Arthritis75%
• High blood pressure73%
• Diabetes45%
• Osteoporosis29%
• Chronic kidney disease28%

Hospitals where Jaffar A. Tremazi works

Medicare's Facility Affiliation Data lists Jaffar A. Tremazi 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.

• Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050231
• San Antonio Regional HospitalUpland, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050099

Practice locations

Addresses where Jaffar A. Tremazi is enrolled with Medicare (CMS data updated October 2, 2026).

• 1904 N Orange Grove AvePomona, CA 91767 (909) 469‑1823

Group practices

Medicare enrollment lists Jaffar A. Tremazi as a member of this group (CMS data updated October 2, 2026).

• Chaparral Medical Group Inc65 clinicians in the group

Specialties

• Rheumatologyprimary
• Internal Medicinealso

Find other Rheumatology doctors in California →

Other rheumatologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• Sapna Rasania, MD
• Anna M. Lafian, DO
• Adam J. Kreitenberg, MD
• Caroline Bui, DO
• Paul H. Kim, MD
• Monica C. Budianu, MD
• Angelica N. Shepard, MD
• Sara Taroumian, MD

All rheumatologists in California →

Other clinicians in Chaparral Medical Group Inc

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

• Derrick N. Raptis, MD
• Seerat Anand, MD
• Guangqiang Gao, MD
• Brian Hughes, PA
• Anthony Gan, DO
• Paul J. Kim, NP

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