Dr. Nayef Mohammed A. Kazzaz, MD

  • Riverside, CA
  • Rheumatologist
NPI1316234693PAC ID3678880747
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Arthritis Medical Clinic

Primary care practice · Riverside, California

See all 3 affiliations

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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 and contact details
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
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Mobile number
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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 Clinic
    6180 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.

Arthritis Medical ClinicPrimary care practice · Riverside, CaliforniaPrimary
Arthritis Medical ClinicPrimary care group, Riverside, CA1 medical groupName with a free account
See all 3 affiliations for Dr. Kazzaz

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.

EHR by site
SiteEHR vendor and product
Arthritis Medical ClinicAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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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, KentuckyPrimaryLicense 51325 · 2018 to 2021 · taxonomy 207RR0500X
  • California license2018 to 2026
  • Michigan license2014 to 2022
  • Ohio license2011 to 2021
  • Florida license2017 to 2020

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.

Medicare services, 20242,324
Medicare patients115
Paid by Medicare$52,083
Procedure codes12

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.

See all procedures by Dr. Kazzaz

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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.

Medicare patients, 2024115
Average age71
Average risk score1.47
Also on Medicaid59%

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

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Osteoporosis54%
  5. Diabetes38%
  6. Mood disorders30%
  7. Depression25%
  8. 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.

Part D claims, 2024850
Drugs named by CMS21
Total drug cost$1.1M
Part D patients189

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.

See all prescribing by Dr. Kazzaz

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

For MedTech and pharma teams

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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.

Papers13
Years published2013 to 2018

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

Recent publications by Dr. Kazzaz

See all 13 publications and co-authors

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.

How network discovery works

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

$2.6Kin total
  • 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.

See all payments to Dr. Kazzaz

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.

  1. Medical schoolKing Saud University College of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine
  3. Board certified in rheumatologyAmerican Board of Internal Medicine

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

  1. Medicare9
  2. PPO9
  3. HMO8
  4. POS5
  5. EPO4
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Nayef Mohammed A. Kazzaz's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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