Maroun E. Hayek, MD
Hematology & Oncology Physician · Greenville, MS
Maroun E. Hayek, MD is a hematology & oncology physician with a practice address in Greenville, Mississippi, and NPI 1922072891, issued on Feb 15, 2006. Check the license (Mississippi 16611, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Maroun E. Hayek
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 16611 MS
Self-reported in NPPES; status is on the state search - Practice location
- 1514 E Union St, Greenville, MS 38703
- Phone
- (662) 334-6394
- Enumerated
- Feb 15, 2006
- Record last updated
- Apr 16, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (662) 332-1647
- Medicaid IDs
- 00123081 MS
129581001 AR - Medicare enrollment
- Enrolled (PECOS I20091229000299); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 64 in Mississippi → Look up another NPI →
Also registered at 1514 E Union St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gregg Dickerson, M.D.Radiation Oncology Physician1699777854
Verify Maroun E. Hayek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 16611Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,715 Medicare Part D claims for 379 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 238 claims were for opioids.
Most prescribed
- Anastrozole324 claims
- Hydrocodone-Acetaminophen141 claims
- Xtandi102 claims
- Kisqali83 claims
- Tamoxifen Citrate81 claims
- Calquence72 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 80.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $492.36
25 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Delta Health SystemGreenville, MS
- Delta Medical GroupGreenville, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maroun E. Hayek among 64 hematology & oncology physician records in Mississippi
Maroun E. Hayek, MD is one of 64 hematology & oncology physician records with a practice address in Mississippi. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 22% of them.
- NPI issued2006 · 22% of these records are older, 52% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1996 · median 2002 among the 52 with a school on file
- Record last updated2014 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Mississippi
There are 64 hematology & oncology physician records in Mississippi.
All 64 in Mississippi → Every provider in Greenville → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Syed Azmi, MDSouthaven, MS 386711922203082
- Sonia Benn, MDSouthaven, MS 386711801825781
- Sohail Minhas, MDSouthaven, MS 386711053303750
- Muhammad Mirza, MDSouthaven, MS 386711467670984
- John Allen, M.D.Oxford, MS 386551417275652
- Andrew Benefield, MDOxford, MS 386551245694116
- Hillary Daugherty, MDOxford, MS 386551265994842
- Dennis Morgan, M.D.Oxford, MS 386551194723965
Common questions
What is Maroun E. Hayek, MD's NPI number?
Maroun E. Hayek, MD's National Provider Identifier (NPI) is 1922072891, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maroun E. Hayek, MD located?
The NPPES record lists a practice address at 1514 E Union St, Greenville, MS, 38703. Phone: (662) 334-6394. Providers update this record themselves, so call before visiting.
How can I verify Maroun E. Hayek, MD's license?
NPPES lists Mississippi license number 16611, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maroun E. Hayek, MD prescribe under Medicare Part D?
In 2024, Maroun E. Hayek, MD had 2,715 Medicare Part D claims for 379 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Maroun E. Hayek, MD's MIPS final score?
The 2023 MIPS final score is 80.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.