Dr. Nayef Mohammed A. Kazzaz, MD
- Medicare services, 2024
- 2,324
- Medicare patients, 2024
- 115
- Part D claims, 2024
- 850
- Publications
- 13
- MIPS score, 2024
- 100
- Practice address
- 6180 Brockton Ave Suite 204 Suite 204, Riverside, CA 92506-2233
- Practice phone
- Call (951) 781-7700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arthritis Medical Clinic
Primary care practice · Riverside, California
Find Dr. Kazzaz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nayef Mohammed A. Kazzaz is a rheumatologist in Riverside, California
Dr. Kazzaz practices at Arthritis Medical Clinic in Riverside, California.
Dr. Kazzaz's NPI, 1316234693, was assigned on July 7, 2011. Dr. Kazzaz graduated from King Saud University College of Medicine in 2009. Dr. Kazzaz's Kentucky license number on file is 51325.
- NPI
- 1316234693NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678880747
- NPI enumeration date
- July 7, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 781-7700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nayef Mohammed A. Kazzaz practices at Arthritis Medical Clinic in Riverside, California
Dr. Kazzaz's primary practice is Arthritis Medical Clinic, at 6180 Brockton Ave Suite 204 Suite 204, Riverside, CA 92506-2233. The practice phone is (951) 781-7700.
- Arthritis Medical Clinic6180 Brockton Ave Suite 204 Suite 204, Riverside, CA 92506-2233Phone(951) 781-7700
Source: Dmand AI Affiliation Data
Dr. Nayef Mohammed A. Kazzaz is affiliated with 1 site of care and 2 medical groups
Dr. Kazzaz's primary practice is Arthritis Medical Clinic in Riverside, California. The medical group on file is Arthritis Medical Clinic. Dmand AI also links Dr. Kazzaz to 1 more medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nayef Mohammed A. Kazzaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kazzaz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arthritis Medical Clinic | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nayef Mohammed A. Kazzaz is one of 821 rheumatologists in California
Rheumatology is Dr. Kazzaz's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Kazzaz is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Kazzaz's licenses on file in 5 states: Kentucky, California, Michigan, Ohio and Florida.
Specialties and state licenses
- Rheumatology, KentuckyPrimary
- California license
- Michigan license
- Ohio license
- Florida license
Clinical focus
Dmand AI lists arteritis, arthritis, joint arthropathy, joint pain, lupus, muscle pain, fibromyalgia, and limb pain, osteoporosis and rheumatoid arthritis among the conditions Dr. Kazzaz treats.
Rheumatologists near Dr. Kazzaz
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. Nayef Mohammed A. Kazzaz billed Medicare for 2,324 services in 2024
CMS data shows 2,324 Medicare services from Dr. Kazzaz across 12 procedure codes in 2024, for 115 Medicare patients. Medicare paid $52,083 for them. Every service was in an office.
Dr. Kazzaz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 502024: 1,7863472%
- Office and hospital visits
- 2023: 2732024: 2751%
- Other services
- 2023: 02024: 125
- Surgery
- 2023: 762024: 699%
- Imaging
- 2023: 372024: 4624%
- Tests and treatments
- 2023: 02024: 23
Dr. Kazzaz compared with the California median for rheumatologists, 2024
- Dr. Kazzaz
- California median
- Medicare services
- 2,324vs 9002.6 times
- Medicare patients
- 115vs 21647% below
- Part D claims
- 699vs 96227% below
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Kazzaz'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kazzaz and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nayef Mohammed A. Kazzaz treated 115 Medicare patients in 2024, average age 71
CMS counts 115 Medicare patients who saw Dr. Kazzaz in 2024. The largest group is 65 to 74, with 54 patients. 75% of them have arthritis, and 75% have high blood pressure. 59% are also on Medicaid. Their average risk score is 1.47, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kazzaz's median patient age at 56, with 81% women.
Dr. Kazzaz's Medicare patients by age, 2024
Dr. Kazzaz's Medicare patients by sex, 2024
- Women8776%
- Men2824%
Chronic conditions among Dr. Kazzaz's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Osteoporosis54%
- Diabetes38%
- Mood disorders30%
- Depression25%
- Chronic kidney disease22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kazzaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women81%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nayef Mohammed A. Kazzaz wrote 850 Medicare Part D claims in 2024
In 2024, Dr. Kazzaz wrote 850 Medicare Part D claims for 189 patients. 64% of them were for generic drugs. CMS names the drug for 699 of them, across 21 drugs with 11 or more claims each, at $1,072,516 in total drug cost. In 2023, CMS named 760 claims across 22 drugs.
Dr. Kazzaz's Part D claims by kind of drug, 2024
- Generic547 claims64%
- Brand-name and other303 claims36%
Dr. Kazzaz'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7602024: 6998%
Drugs named by CMS: 21 in 2024, 22 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. Nayef Mohammed A. Kazzaz scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Kazzaz for performance year 2024, reported as part of a group. Dr. Kazzaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Kazzaz's MIPS scores, performance year 2024
- 100of 100Final score
- 87.2of 100Quality
- 40of 100Improvement Activities
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. Nayef Mohammed A. Kazzaz has 13 publications on record
Dmand AI links 13 papers to Dr. Kazzaz, published from 2013 to 2018. 2015 was the busiest year, with 3. The most frequent topics are Antiphospholipid Syndrome and Glucocorticoids. Dr. Kazzaz has published most often in Lupus Sci Med. Dr. Kazzaz's most frequent co-authors are Jason S. Knight, MD, Paula L. Bockenstedt, MD and Ahmed Abdel-Latif, MD.
Dr. Kazzaz's papers by year, 2013 to 2018
Topics Dr. Kazzaz writes about most
- Antiphospholipid Syndrome
- Glucocorticoids
Dr. Kazzaz's most frequent co-authors
- Jason S. Knight, MD8 shared papers
- Paula L. Bockenstedt, MD2 shared papers
- Ahmed Abdel-Latif, MD1 shared paper
Recent publications by Dr. Kazzaz
See who Dr. Kazzaz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kazzaz works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nayef Mohammed A. Kazzaz received $2,617 in industry payments from 2021 to 2025
CMS Open Payments shows 130 general payments to Dr. Kazzaz from 21 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 91% of the total. Amgen Inc. paid the most, $770.
General payments to Dr. Kazzaz by program year, 2021 to 2025
General payments to Dr. Kazzaz by kind, 2021 to 2025
- Food and beverage$2,38291%
- Education$2359%
Companies that paid Dr. Kazzaz the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nayef Mohammed A. Kazzaz graduated from King Saud University College of Medicine
Dr. Kazzaz graduated from King Saud University College of Medicine in 2009.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Nayef Mohammed A. Kazzaz accepts plans from 17 insurance carriers
Dr. Kazzaz is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Molina
- Regence Health Plans
- +9 more carriersWith a free account
Plan types Dr. Kazzaz accepts, by number of carriers
- Medicare9
- PPO9
- HMO8
- POS5
- EPO4
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Nayef Mohammed A. Kazzaz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nayef Mohammed A. Kazzaz
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. Nayef Mohammed A. Kazzaz's NPI number?
Dr. Nayef Mohammed A. Kazzaz's NPI number is 1316234693. It was assigned on July 7, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Nayef Mohammed A. Kazzaz?
Dr. Nayef Mohammed A. Kazzaz is a rheumatologist in Riverside, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Nayef Mohammed A. Kazzaz practice?
Dr. Kazzaz practices at 6180 Brockton Ave Suite 204 Suite 204, Riverside, CA 92506-2233. Dr. Kazzaz's primary practice is Arthritis Medical Clinic in Riverside, California. Dmand AI also links Dr. Kazzaz to 1 medical group.
What is Dr. Nayef Mohammed A. Kazzaz's office phone number?
The practice phone on file for Dr. Kazzaz is (951) 781-7700.
What is Dr. Nayef Mohammed A. Kazzaz's medical license number?
Dr. Kazzaz's Kentucky license number on file is 51325, one of the licenses on file in 5 states.
Which states has Dr. Nayef Mohammed A. Kazzaz been licensed in?
Dmand AI has state licenses on file for Dr. Kazzaz in Kentucky (2018 to 2021), California (2018 to 2026), Michigan (2014 to 2022), Ohio (2011 to 2021) and Florida (2017 to 2020).
What medical group is Dr. Nayef Mohammed A. Kazzaz part of?
Dr. Kazzaz is linked to Arthritis Medical Clinic. Dmand AI links Dr. Kazzaz to 1 more medical group.
Does Dr. Nayef Mohammed A. Kazzaz accept Medicare?
Yes. CMS data shows Dr. Kazzaz billed Medicare for 2,324 services in 2024, and Dr. Kazzaz accepts Medicare assignment.
What is Dr. Nayef Mohammed A. Kazzaz's MIPS score?
Dr. Kazzaz's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Nayef Mohammed A. Kazzaz see?
CMS counts 115 Medicare patients who saw Dr. Kazzaz in 2024, with an average age of 71.
Show 9 more questionsShow fewer questions
Is Dr. Nayef Mohammed A. Kazzaz board certified?
Yes. Dr. Kazzaz is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Nayef Mohammed A. Kazzaz bill to Medicare?
In 2024, Dr. Kazzaz's most billed Medicare services were injected or infused drug (J1010), injected or infused drug (J0897) and medicare service (G2211).
Where did Dr. Nayef Mohammed A. Kazzaz go to medical school?
Dr. Kazzaz graduated from King Saud University College of Medicine in 2009.
What drugs does Dr. Nayef Mohammed A. Kazzaz prescribe most?
In 2024 Medicare Part D data, Dr. Kazzaz's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Prednisone and Methotrexate.
Has Dr. Nayef Mohammed A. Kazzaz received payments from drug or device companies?
CMS Open Payments shows $2,617 in general payments to Dr. Kazzaz from 21 companies from 2021 to 2025. The largest total came from Amgen Inc.
How long has Dr. Nayef Mohammed A. Kazzaz been practicing?
Dr. Kazzaz graduated from medical school in 2009, 17 years ago.
Does Dr. Nayef Mohammed A. Kazzaz do research?
Dmand AI links 13 publications to Dr. Kazzaz, published from 2013 to 2018.
Who does Dr. Nayef Mohammed A. Kazzaz publish with?
Dr. Kazzaz's most frequent co-authors are Jason S. Knight, MD (8 shared papers), Paula L. Bockenstedt, MD (2 shared papers) and Ahmed Abdel-Latif, MD (1 shared paper).
What insurance does Dr. Nayef Mohammed A. Kazzaz accept?
Dr. Kazzaz is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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