Justin D. Floyd, DO
Medical Oncology Physician · O Fallon, IL
Justin D. Floyd, DO is a medical oncology physician with a practice address in O Fallon, Illinois, and NPI 1629164678, issued on Oct 5, 2006. Check the license (Illinois 036112641, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Justin D. Floyd
- Credential
- DO
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- 036112641 IL
2001014924 MO
Self-reported in NPPES; status is on the state search - Practice location
- 321 Regency Park Ste 100, O Fallon, IL 62269
- Phone
- (618) 416-7970
- Enumerated
- Oct 5, 2006
- Record last updated
- Dec 8, 2023
- Fax
- (618) 416-7971
- Medicaid ID
- 036112641 IL
- Medicare enrollment
- Enrolled (PECOS I20050214000796); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 182 in Illinois → Look up another NPI →
Also registered at 321 Regency Park Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachael Demattei, APRNNurse Practitioner1891443289
- Bachir Farah, M.D.Hematology & Oncology Physician1336370915
- Bassam Maalouf, M.D.Hematology & Oncology Physician1720173438
- Ryan Mueller, MDRadiation Oncology Physician1912571654
- Julianne Tomac, DNP, FNP-CFamily Nurse Practitioner1245018944
- Mark Walshauser, M.D.Hematology & Oncology Physician1306020664
Verify Justin D. Floyd in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036112641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average medical oncology physician in 2024
1,825 Medicare Part D claims for 290 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 189 claims were for opioids.
Most prescribed
- Ondansetron Hcl125 claims
- Hydrocodone-Acetaminophen124 claims
- Anastrozole116 claims
- Prochlorperazine Maleate90 claims
- Eliquis85 claims
- Potassium Chloride72 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): 77.7 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: $2,164.00
78 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 3,343 providers of this specialty with any payment received $11,773.47 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.
2 hospitals and group practices
- Memorial HospitalChester, IL · Acute Care Hospitals5 of 5 stars
- Cancer Care Specialists OF Central Illinois SCO Fallon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Justin D. Floyd among 182 medical oncology physician records in Illinois
Justin D. Floyd, DO is one of 182 medical oncology physician records with a practice address in Illinois. 83% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2000 · median 2000 among the 132 with a school on file
- Record last updated2023 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Illinois
There are 182 medical oncology physician records in Illinois.
All 182 in Illinois → Every provider in O Fallon → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Alfred Greco, MDShiloh, IL 622691073501607
- Brett Herzog, MD PHDShiloh, IL 622691023499282
- William Popovic, MDShiloh, IL 622691609824549
- John Visconti, DOShiloh, IL 622691033167846
- Mohammed Siddiqui, MDNashville, IL 622631730115973
- Guillermo Rodriguez, MDBelleville, IL 622261861440661
- Philip Dy, M.D.Effingham, IL 624011710076567
- Mario Velasco, MDDecatur, IL 625261326007782
Common questions
What is Justin D. Floyd, DO's NPI number?
Justin D. Floyd, DO's National Provider Identifier (NPI) is 1629164678, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Justin D. Floyd, DO located?
The NPPES record lists a practice address at 321 Regency Park Ste 100, O Fallon, IL, 62269. Phone: (618) 416-7970. Providers update this record themselves, so call before visiting.
How can I verify Justin D. Floyd, DO's license?
NPPES lists Illinois license number 036112641, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Justin D. Floyd, DO prescribe under Medicare Part D?
In 2024, Justin D. Floyd, DO had 1,825 Medicare Part D claims for 290 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Justin D. Floyd, DO's MIPS final score?
The 2023 MIPS final score is 77.7 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.