Brian James Duff, MD
Family Medicine Physician · Nixa, MO
Brian James Duff, MD is a family medicine physician with a practice address in Nixa, Missouri, and NPI 1447411145, issued on Jun 24, 2008. Check the license (Missouri 2011011353, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Brian James Duff
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 2011011353 MO
TRN12304 FL
Self-reported in NPPES; status is on the state search - Practice location
- 501 N Old Wilderness RD, Nixa, MO 65714
- Phone
- (417) 269-2227
- Enumerated
- Jun 24, 2008
- Record last updated
- May 12, 2025
- Fax
- (417) 269-2235
- Medicare enrollment
- Enrolled (PECOS I20110923000332); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,991 in Missouri → Look up another NPI →
Also registered at 501 N Old Wilderness RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chelsea Burnett, DOFamily Medicine Physician1992144877
- Chandler Dejonge, PA-CPhysician Assistant1164223913
- Bridget Ellsworth, FNP-CFamily Nurse Practitioner1518452366
- Lacey Hall, DNPFamily Nurse Practitioner1316555006
- Sara HendersonMedical Physician Assistant1427863745
- Kristen Killen, MDFamily Medicine Physician1144679960
Verify Brian James Duff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2011011353Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.2 times the Medicare Part D claims of the average family medicine physician in 2024
18,379 Medicare Part D claims for 1,319 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 857 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,073 claims
- Lisinopril733 claims
- Amlodipine Besylate731 claims
- Losartan Potassium560 claims
- Gabapentin557 claims
- Levothyroxine Sodium557 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.
Bills Medicare through 2 group practices
- Cherry Health Center, LLCSpringfield, MO
- Lester E Cox Medical CentersNixa, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian James Duff among 2,991 family medicine physician records in Missouri
Brian James Duff, MD is one of 2,991 family medicine physician records with a practice address in Missouri. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 42% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2008 · median 2006 among the 1,778 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Nixa
They are 12 of the 329 NPPES records with a practice address in Nixa, and 2,991 family medicine physician records in Missouri.
All 2,991 in Missouri → Every provider in Nixa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Chelsea Burnett, DONixa, MO 657141992144877
- William Campbell, DONixa, MO 657141114919347
- Kristen Killen, MDNixa, MO 657141144679960
- Justin Legris, M.D.Nixa, MO 657141952715716
- Ryan Lollis, RNNixa, MO 657141689592537
- Siu Ping Luthy, M.D.Nixa, MO 657141275546947
- Rachelene Middleton, MDNixa, MO 657141972511020
- Guy Miller, DONixa, MO 657141457426751
Common questions
What is Brian James Duff, MD's NPI number?
Brian James Duff, MD's National Provider Identifier (NPI) is 1447411145, issued on Jun 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Brian James Duff, MD located?
The NPPES record lists a practice address at 501 N Old Wilderness RD, Nixa, MO, 65714. Phone: (417) 269-2227. Providers update this record themselves, so call before visiting.
How can I verify Brian James Duff, MD's license?
NPPES lists Missouri license number 2011011353, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian James Duff, MD prescribe under Medicare Part D?
In 2024, Brian James Duff, MD had 18,379 Medicare Part D claims for 1,319 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.