Lupus Erythematosus, SystemicConnective Tissue DiseasesBENLYSTA
Dr. Jaffar Abbas Tremazi, MD
NPI1649248782PAC ID3072546712
- Medicare services, 2024
- 1,521
- Medicare patients, 2024
- 228
- Part D claims, 2024
- 5,384
- Clinical trials
- 1
- MIPS score, 2024
- 78
- Practice address
- 790 E Bonita Ave, Pomona, CA 91767
- Practice phone
- Call (909) 447-8585
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chaparral Medical Group Inc
Pomona, California
Find Dr. Tremazi's professional email, personal email and mobile number
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Dr. Jaffar Abbas Tremazi is a rheumatologist in Pomona, California
Dr. Tremazi practices at Chaparral Medical Group Inc in Pomona, California.
Dr. Tremazi's NPI, 1649248782, was assigned on March 14, 2006. Dr. Tremazi holds California license A82895.
NPI and contact details
- NPI
- 1649248782NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072546712
- NPI enumeration date
- March 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (909) 447-8585
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jaffar Abbas Tremazi practices at Chaparral Medical Group Inc in Pomona, California
Dr. Tremazi's primary practice is Chaparral Medical Group Inc, at 790 E Bonita Ave, Pomona, CA 91767 in Los Angeles County. The practice phone is (909) 447-8585.
- Chaparral Medical Group Inc790 E Bonita Ave, Pomona, CA 91767 · Los Angeles CountyPhone(909) 447-8585
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jaffar Abbas Tremazi is affiliated with 5 sites of care and 2 medical groups
Dr. Tremazi's primary practice is Chaparral Medical Group Inc in Pomona, California. Dr. Tremazi is also affiliated with Pomona Valley Hospital Medical Center. The medical group on file is Chaparral Medical Group. Dmand AI also links Dr. Tremazi to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Chaparral Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jaffar Abbas Tremazi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tremazi practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chaparral Medical Group Inc | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jaffar Abbas Tremazi is one of 821 rheumatologists in California
Rheumatology is Dr. Tremazi's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Tremazi is licensed in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Rheumatologists near Dr. Tremazi
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jaffar Abbas Tremazi billed Medicare for 1,521 services in 2024
CMS data shows 1,521 Medicare services from Dr. Tremazi across 7 procedure codes in 2024, for 228 Medicare patients. Medicare paid $59,747 for them. Every service was in an office.
Medicare services, 20241,521
Medicare patients228
Paid by Medicare$59,747
Procedure codes7
Dr. Tremazi's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 9182024: 8893%
- Office and hospital visits
- 2023: 5482024: 548No change
- Tests and treatments
- 2023: 542024: 54No change
- Surgery
- 2023: 412024: 3027%
Dr. Tremazi compared with the California median for rheumatologists, 2024
- Dr. Tremazi
- California median
- Medicare services
- 1,521vs 90069% above
- Medicare patients
- 228vs 2166% above
- Part D claims
- 4,983vs 9625.2 times
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Tremazi's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jaffar Abbas Tremazi treated 228 Medicare patients in 2024, average age 69
CMS counts 228 Medicare patients who saw Dr. Tremazi in 2024. The largest group is 65 to 74, with 115 patients. 75% of them have arthritis, and 75% have high cholesterol. 52% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tremazi's median patient age at 64, with 80% women.
Medicare patients, 2024228
Average age69
Average risk score1.35
Also on Medicaid52%
Dr. Tremazi's Medicare patients by age, 2024
Dr. Tremazi's Medicare patients by sex, 2024
- Women19083%
- Men3817%
Chronic conditions among Dr. Tremazi's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure73%
- Diabetes45%
- Osteoporosis29%
- Chronic kidney disease28%
- Mood disorders27%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tremazi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women80%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jaffar Abbas Tremazi wrote 5,384 Medicare Part D claims in 2024
In 2024, Dr. Tremazi wrote 5,384 Medicare Part D claims for 606 patients. 87% of them were for generic drugs. CMS names the drug for 4,983 of them, across 68 drugs with 11 or more claims each, at $3,257,827 in total drug cost. In 2023, CMS named 5,231 claims across 69 drugs.
Part D claims, 20245,384
Drugs named by CMS68
Total drug cost$3.3M
Part D patients606
Dr. Tremazi's Part D claims by kind of drug, 2024
- Generic4,693 claims87%
- Brand-name and other691 claims13%
Dr. Tremazi's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Tremazi's Part D claims, 2024
- Opioids18%972 of 5,384 claims
- Antibiotics0%26 of 5,384 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,2312024: 4,9835%
Drugs named by CMS: 68 in 2024, 69 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Jaffar Abbas Tremazi scored 78 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 78 out of 100 for Dr. Tremazi for performance year 2024, reported as part of a group. Dr. Tremazi accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tremazi as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Tremazi's MIPS scores, performance year 2024
- 78of 100Final score
- 40.9of 100Quality
- 75of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jaffar Abbas Tremazi has worked on 1 clinical trial
Dmand AI links Dr. Tremazi to 1 clinical trial. Conditions studied include Lupus Erythematosus, Systemic and Connective Tissue Diseases.
Conditions in Dr. Tremazi's trials
- Lupus Erythematosus, Systemic
- Connective Tissue Diseases
Investigators on the most trials with Dr. Tremazi
- Nezam Ibrahim Altorok1 shared trial
- Hammad A. Bajwa, MD1 shared trial
- Adegbenga A. Bankole, MD1 shared trial
Recent clinical trials with Dr. Tremazi
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jaffar Abbas Tremazi received $13,923 in industry payments from 2016 to 2025
CMS Open Payments shows 798 general payments to Dr. Tremazi from 46 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Amgen Inc. paid the most, $2,033.
General payments to Dr. Tremazi by program year, 2016 to 2025
General payments to Dr. Tremazi by kind, 2016 to 2025
$13.9Kin total
- Food and beverage$13,46297%
- Education$4603%
Companies that paid Dr. Tremazi the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jaffar Abbas Tremazi's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jaffar Abbas Tremazi
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jaffar Abbas Tremazi's NPI number?
Dr. Jaffar Abbas Tremazi's NPI number is 1649248782. It was assigned on March 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jaffar Abbas Tremazi?
Dr. Jaffar Abbas Tremazi is a rheumatologist in Pomona, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Jaffar Abbas Tremazi practice?
Dr. Tremazi practices at 790 E Bonita Ave, Pomona, CA 91767. Dr. Tremazi's primary practice is Chaparral Medical Group Inc in Pomona, California. Dmand AI also links Dr. Tremazi to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Jaffar Abbas Tremazi's office phone number?
The practice phone on file for Dr. Tremazi is (909) 447-8585.
What is Dr. Jaffar Abbas Tremazi's medical license number?
Dr. Tremazi holds California license A82895.
Which hospitals is Dr. Jaffar Abbas Tremazi affiliated with?
Dr. Tremazi is affiliated with Pomona Valley Hospital Medical Center. Dmand AI links Dr. Tremazi to 1 more hospital.
What medical group is Dr. Jaffar Abbas Tremazi part of?
Dr. Tremazi is linked to Chaparral Medical Group. Dmand AI links Dr. Tremazi to 1 more medical group.
Does Dr. Jaffar Abbas Tremazi accept Medicare?
Yes. CMS data shows Dr. Tremazi billed Medicare for 1,521 services in 2024, and Dr. Tremazi accepts Medicare assignment.
Does Dr. Jaffar Abbas Tremazi offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tremazi as offering telehealth services.
What is Dr. Jaffar Abbas Tremazi's MIPS score?
Dr. Tremazi's MIPS final score for performance year 2024 is 78 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Jaffar Abbas Tremazi see?
CMS counts 228 Medicare patients who saw Dr. Tremazi in 2024, with an average age of 69.
What services does Dr. Jaffar Abbas Tremazi bill to Medicare?
In 2024, Dr. Tremazi's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99214) and office visit, new patient (99204).
What drugs does Dr. Jaffar Abbas Tremazi prescribe most?
In 2024 Medicare Part D data, Dr. Tremazi's most prescribed drugs by claims were Methotrexate, Hydrocodone-Acetaminophen and Hydroxychloroquine Sulfate.
Has Dr. Jaffar Abbas Tremazi received payments from drug or device companies?
CMS Open Payments shows $13,923 in general payments to Dr. Tremazi from 46 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Jaffar Abbas Tremazi been practicing?
Dr. Tremazi graduated from medical school in 1998, 28 years ago.
Does Dr. Jaffar Abbas Tremazi do research?
Dr. Tremazi has worked on 1 clinical trial.
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