Justin Aaron Simpson, D.O.
Emergency Medicine Physician · Saint Joseph, MO
Justin Aaron Simpson, D.O. is an emergency medicine physician with a practice address in Saint Joseph, Missouri, and NPI 1447494463, issued on Apr 21, 2009. Check the license (Missouri 2013004984, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Justin Aaron Simpson
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 2013004984 MO
Self-reported in NPPES; status is on the state search - Practice location
- 5325 Faraon St, Saint Joseph, MO 64506
- Phone
- (816) 271-6445
- Enumerated
- Apr 21, 2009
- Record last updated
- Oct 27, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140227000170); accepts Medicare assignment
- Medical or professional school
- Kansas City College Of Medicine And Surgery, 2009
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 in Missouri → Look up another NPI →
Also registered at 5325 Faraon St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan Alderson, RD,CDEMetabolic Nutrition Registered Dietitian1669761904
- Jose Alvarez, MDDiagnostic Radiology Physician1326027657
- Alan Anderson, D.O.Psychiatry Physician1003159005
Verify Justin Aaron Simpson 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 2013004984Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average emergency medicine physician in 2024
163 Medicare Part D claims for 120 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Cephalexin30 claims
- Prednisone24 claims
- Azithromycin21 claims
- Hydrocodone-Acetaminophen13 claims
- Clindamycin Hcl11 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): 76.9 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).
2 hospitals and group practices
- Heartland Regional Medical CenterSaint Joseph, MO
- Mosaic Medical Center - MaryvilleMaryville, MO · Critical Access Hospitals
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).
Justin Aaron Simpson among 1,405 emergency medicine physician records in Missouri
Justin Aaron Simpson, D.O. is one of 1,405 emergency medicine physician records with a practice address in Missouri. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 51% of them.
- NPI issued2009 · 51% of these records are older, 47% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2009 · median 2012 among the 808 with a school on file
- Record last updated2017 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 emergency medicine physician records list a practice address in Saint Joseph
They are 24 of the 1,219 NPPES records with a practice address in Saint Joseph, and 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Saint Joseph → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Tyler Brown, M.D.Saint Joseph, MO 645061912387283
- Zachary Downs, D.O.Saint Joseph, MO 645061407241433
- Jeremy Hunter, D.O.Saint Joseph, MO 645061841519907
- Louis Jamtgaard, M.D.Saint Joseph, MO 645061255696308
- Robert Mabry, MDSt Joeseph, MO 645061487746954
- Crystal Macaluso, D.O.Saint Joseph, MO 645061043656796
- Peter Phan, DOSaint Joseph, MO 645061316998941
- Evan Slanczka, D.O.Saint Joseph, MO 645061245625375
Common questions
What is Justin Aaron Simpson, D.O.'s NPI number?
Justin Aaron Simpson, D.O.'s National Provider Identifier (NPI) is 1447494463, issued on Apr 21, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Justin Aaron Simpson, D.O. located?
The NPPES record lists a practice address at 5325 Faraon St, Saint Joseph, MO, 64506. Phone: (816) 271-6445. Providers update this record themselves, so call before visiting.
How can I verify Justin Aaron Simpson, D.O.'s license?
NPPES lists Missouri license number 2013004984, 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 Justin Aaron Simpson, D.O. prescribe under Medicare Part D?
In 2024, Justin Aaron Simpson, D.O. had 163 Medicare Part D claims for 120 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Justin Aaron Simpson, D.O.'s MIPS final score?
The 2023 MIPS final score is 76.9 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.