Zachary Joel Treat, MD
Family Medicine Physician · Saint Louis, MO
Zachary Joel Treat, MD is a family medicine physician with a practice address in Saint Louis, Missouri, and NPI 1447743083, issued on Jun 8, 2018. Check the license (Missouri 2020035229, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Zachary Joel Treat
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 2020035229 MO
50495 IA
Self-reported in NPPES; status is on the state search - Practice location
- 10010 Kennerly RD, Saint Louis, MO 63128
- Phone
- (314) 525-1328
- Enumerated
- Jun 8, 2018
- Record last updated
- Jan 19, 2026
- Medicare enrollment
- Enrolled (PECOS I20210308000707); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,991 in Missouri → Look up another NPI →
Also registered at 10010 Kennerly RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Zachary Joel Treat 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 2020035229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average family medicine physician in 2024
642 Medicare Part D claims for 228 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Potassium Chloride47 claims
- Pantoprazole Sodium36 claims
- Furosemide33 claims
- Amoxicillin-Clavulanate Potass28 claims
- Amlodipine Besylate25 claims
- Jardiance25 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
- Iowa Physicians Clinic Medical FoundationWaterloo, IA
- St Anthonys Physician Organization Hospitalist Services LCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Joel Treat among 2,991 family medicine physician records in Missouri
Zachary Joel Treat, 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 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2006 among the 1,778 with a school on file
- Record last updated2026 · 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).
Family Medicine Physician providers in Missouri
There are 2,991 family medicine physician records in Missouri.
All 2,991 in Missouri → Every provider in Saint Louis → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Aaron Bjorn, DOSaint Louis, MO 631281740281088
- Brenda Buckley, M.D.Saint Louis, MO 631281134104466
- Kiran Chennareddy, MDSaint Louis, MO 631281992752869
- Christopher Espana, M.D.Saint Louis, MO 631281003922634
- Christina Garretto, D.O.St Louis, MO 631281144430612
- Edina Karahodzic, MDSaint Louis, MO 631281891895934
- Yvonne Layugan, M.D.Saint Louis, MO 631281902940869
- Marlon Marquino, M.D.Saint Louis, MO 631281366642704
Common questions
What is Zachary Joel Treat, MD's NPI number?
Zachary Joel Treat, MD's National Provider Identifier (NPI) is 1447743083, issued on Jun 8, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Joel Treat, MD located?
The NPPES record lists a practice address at 10010 Kennerly RD, Saint Louis, MO, 63128. Phone: (314) 525-1328. Providers update this record themselves, so call before visiting.
How can I verify Zachary Joel Treat, MD's license?
NPPES lists Missouri license number 2020035229, 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 Zachary Joel Treat, MD prescribe under Medicare Part D?
In 2024, Zachary Joel Treat, MD had 642 Medicare Part D claims for 228 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.