Dr. Mazen Zaitoon, MD
- Medicare services, 2024
- 2,892
- Medicare patients, 2024
- 1,177
- Part D claims, 2024
- 590
- MIPS score, 2024
- 61
- Hospital affiliations
- 1
- Practice address
- 3001 St Rose Parkway, Henderson, NV 89052
- Practice phone
- Call (702) 616-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Zaitoon's professional email, personal email and mobile number
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Dr. Mazen Zaitoon is an internist in Henderson, Nevada
Dr. Zaitoon practices at Dignity Health - Saint Rose Dominican Hospital, Siena Campus in Henderson, Nevada, part of CommonSpirit Health.
Dr. Zaitoon's NPI, 1013280965, was assigned on February 22, 2012. Dr. Zaitoon holds Indiana license 01075647A.
- NPI
- 1013280965NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345557815
- NPI enumeration date
- February 22, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 616-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mazen Zaitoon practices at Dignity Health - Saint Rose Dominican Hospital, Siena Campus in Henderson, Nevada
Dr. Zaitoon's primary practice is Dignity Health - Saint Rose Dominican Hospital, Siena Campus, at 3001 St Rose Parkway, Henderson, NV 89052 in Clark County. The practice phone is (702) 616-5000.
- Dignity Health - Saint Rose Dominican Hospital, Siena Campus3001 St Rose Parkway, Henderson, NV 89052 · Clark CountyPhone(702) 616-5000
Source: Dmand AI Affiliation Data
Dr. Mazen Zaitoon is affiliated with 2 sites of care and 1 medical group
Dr. Zaitoon's primary practice is Dignity Health - Saint Rose Dominican Hospital, Siena Campus in Henderson, Nevada, part of CommonSpirit Health. The medical group on file is Platinum Hospitalists. Dmand AI also links Dr. Zaitoon to 1 more clinical lab, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mazen Zaitoon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zaitoon practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Saint Rose Dominican Hospital, Siena Campus | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mazen Zaitoon is one of 1,019 internists in Nevada
Internal medicine is Dr. Zaitoon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Zaitoon is licensed in Indiana.
Specialties and state licenses
- Internal medicine, IndianaPrimary
Internists near Dr. Zaitoon
Counts of internists 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. Mazen Zaitoon billed Medicare for 2,892 services in 2024
CMS data shows 2,892 Medicare services from Dr. Zaitoon across 5 procedure codes in 2024, for 1,177 Medicare patients. Medicare paid $261,203 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zaitoon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,1622024: 2,89234%
Dr. Zaitoon compared with the Nevada median for internists, 2024
- Dr. Zaitoon
- Nevada median
- Medicare services
- 2,892vs 5205.6 times
- Medicare patients
- 1,177vs 1916.2 times
- Part D claims
- 345vs 3645% below
Medians across 935 internists in Nevada with Dmand AI profiles that report each measure.
Dr. Zaitoon'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. Mazen Zaitoon treated 1,177 Medicare patients in 2024, average age 77
CMS counts 1,177 Medicare patients who saw Dr. Zaitoon in 2024. The largest group is 75 to 84, with 530 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Zaitoon's median patient age at 75, with 52% women.
Dr. Zaitoon's Medicare patients by age, 2024
Dr. Zaitoon's Medicare patients by sex, 2024
- Women63854%
- Men53946%
Chronic conditions among Dr. Zaitoon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Ischemic heart disease47%
- Chronic kidney disease46%
- Diabetes43%
- Atrial fibrillation38%
- Heart failure38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zaitoon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mazen Zaitoon wrote 590 Medicare Part D claims in 2024
In 2024, Dr. Zaitoon wrote 590 Medicare Part D claims for 292 patients. 89% of them were for generic drugs. CMS names the drug for 345 of them, across 20 drugs with 11 or more claims each, at $10,806 in total drug cost. In 2023, CMS named 142 claims across 8 drugs.
Dr. Zaitoon's Part D claims by kind of drug, 2024
- Generic523 claims89%
- Brand-name and other67 claims11%
Dr. Zaitoon'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. Zaitoon's Part D claims, 2024
- Opioids8%50 of 590 claims
- Antibiotics18%109 of 590 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: 1422024: 345143%
Drugs named by CMS: 20 in 2024, 8 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. Mazen Zaitoon scored 61 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 61 out of 100 for Dr. Zaitoon for performance year 2024, reported as part of a group. Dr. Zaitoon accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Zaitoon's MIPS scores, performance year 2024
- 61of 100Final score
- 36.7of 100Quality
- 40of 100Improvement Activities
- 62of 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. Mazen Zaitoon received $1,127 in industry payments from 2017 to 2025
CMS Open Payments shows 28 general payments to Dr. Zaitoon from 14 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $194.
General payments to Dr. Zaitoon by program year, 2017 to 2025
Companies that paid Dr. Zaitoon the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mazen Zaitoon'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 DataDmand AI Org Hierarchy 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Mazen Zaitoon
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. Mazen Zaitoon's NPI number?
Dr. Mazen Zaitoon's NPI number is 1013280965. It was assigned on February 22, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Mazen Zaitoon?
Dr. Mazen Zaitoon is an internist in Henderson, Nevada. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mazen Zaitoon practice?
Dr. Zaitoon practices at 3001 St Rose Parkway, Henderson, NV 89052. Dr. Zaitoon's primary practice is Dignity Health - Saint Rose Dominican Hospital, Siena Campus in Henderson, Nevada, part of CommonSpirit Health. Dmand AI also links Dr. Zaitoon to 1 clinical lab.
What is Dr. Mazen Zaitoon's office phone number?
The practice phone on file for Dr. Zaitoon is (702) 616-5000.
What is Dr. Mazen Zaitoon's medical license number?
Dr. Zaitoon holds Indiana license 01075647A.
Which hospitals is Dr. Mazen Zaitoon affiliated with?
Dr. Zaitoon practices at Dignity Health - Saint Rose Dominican Hospital, Siena Campus in Henderson, Nevada.
What medical group is Dr. Mazen Zaitoon part of?
Dr. Zaitoon is linked to Platinum Hospitalists.
Does Dr. Mazen Zaitoon accept Medicare?
Yes. CMS data shows Dr. Zaitoon billed Medicare for 2,892 services in 2024, and Dr. Zaitoon accepts Medicare assignment.
What is Dr. Mazen Zaitoon's MIPS score?
Dr. Zaitoon's MIPS final score for performance year 2024 is 61 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mazen Zaitoon see?
CMS counts 1,177 Medicare patients who saw Dr. Zaitoon in 2024, with an average age of 77.
Show 4 more questionsShow fewer questions
What services does Dr. Mazen Zaitoon bill to Medicare?
In 2024, Dr. Zaitoon's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
What drugs does Dr. Mazen Zaitoon prescribe most?
In 2024 Medicare Part D data, Dr. Zaitoon's most prescribed drugs by claims were Cefdinir, Atorvastatin Calcium and Furosemide.
Has Dr. Mazen Zaitoon received payments from drug or device companies?
CMS Open Payments shows $1,127 in general payments to Dr. Zaitoon from 14 companies from 2017 to 2025. The largest total came from Bayer HealthCare Pharmaceuticals Inc.
How long has Dr. Mazen Zaitoon been practicing?
Dr. Zaitoon graduated from medical school in 2011, 15 years ago.
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