Mackenzie Anne Smith Steck, MD
Critical Care Medicine (Internal Medicine) Physician · Saint Louis, MO
Mackenzie Anne Smith Steck, MD is a critical care medicine (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1619436441, issued on Mar 19, 2019. Check the license (Missouri 2022033891, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mackenzie Anne Smith Steck
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 2022033891 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1225 S Grand Blvd, Saint Louis, MO 63104
- Phone
- (314) 977-4680
- Enumerated
- Mar 19, 2019
- Record last updated
- Apr 28, 2026
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 178 in Missouri → Look up another NPI →
Also registered at 1225 S Grand Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mackenzie Anne Smith Steck 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 2022033891Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
172 Medicare Part D claims for 32 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Albuterol Sulfate Hfa20 claims
- Breztri Aerosphere16 claims
- Anoro Ellipta15 claims
- Esomeprazole Magnesium12 claims
- Famotidine12 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): 88.9 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).
Mackenzie Anne Smith Steck among 178 critical care medicine (internal medicine) physician records in Missouri
Mackenzie Anne Smith Steck, MD is one of 178 critical care medicine (internal medicine) physician records with a practice address in Missouri. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 91% of them.
- NPI issued2019 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2026 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Missouri
There are 178 critical care medicine (internal medicine) physician records in Missouri.
All 178 in Missouri → Every provider in Saint Louis → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Sangita Aradhyula, M.D.Saint Louis, MO 631041356551915
- Argun Can, M.D., M.S.Saint Louis, MO 631041821432766
- Maria Chalfoun, M.DSaint Louis, MO 631041356185821
- Zafar Akram Jamkhana, M.D., M.P.H.Saint Louis, MO 631041316170111
- Chaitanya Karlapalem, MDSaint Louis, MO 631041407264302
- Anoop Kumar, MDSaint Louis, MO 631041780160275
- David Stoeckel, M.D.Saint Louis, MO 631041235337932
- Stephen Osmon, MDSt Louis, MO 631061083677520
Common questions
What is Mackenzie Anne Smith Steck, MD's NPI number?
Mackenzie Anne Smith Steck, MD's National Provider Identifier (NPI) is 1619436441, issued on Mar 19, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mackenzie Anne Smith Steck, MD located?
The NPPES record lists a practice address at 1225 S Grand Blvd, Saint Louis, MO, 63104. Phone: (314) 977-4680. Providers update this record themselves, so call before visiting.
How can I verify Mackenzie Anne Smith Steck, MD's license?
NPPES lists Missouri license number 2022033891, 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 Mackenzie Anne Smith Steck, MD prescribe under Medicare Part D?
In 2024, Mackenzie Anne Smith Steck, MD had 172 Medicare Part D claims for 32 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
What is Mackenzie Anne Smith Steck, MD's MIPS final score?
The 2023 MIPS final score is 88.9 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.