NPPES file of Aug 9, 2026

Katy Michele Stewart, ANP

Adult Health Nurse Practitioner · Saint Louis, MO

Katy Michele Stewart, ANP is an adult health nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1437576600, issued on Mar 25, 2014. Check the license (Missouri 2014006858, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1437576600
Name
Katy Michele Stewart
Credential
ANP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
2014006858 MO
Self-reported in NPPES; status is on the state search
Practice location
4500 Forest Park Ave, Saint Louis, MO 63108
Phone
(314) 454-8304
Enumerated
Mar 25, 2014
Record last updated
Apr 17, 2025
Fax
(314) 454-5902
Medicaid ID
420012678 MO
Medicare enrollment
Enrolled (PECOS I20140507001537); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 2013
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 4500 Forest Park Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Camille Abboud, MDMedical Oncology Physician1316965320
  2. Douglas Adkins, MDMedical Oncology Physician1164440616
  3. Rebecca Aft, MDSurgical Oncology Physician1164440897
  4. Amber Afzal, MDHematology (Internal Medicine) Physician1831539808
  5. Caleb Bannister, PHARM. D.Pharmacist1124718283
  6. Stephanie Bauer, FNPFamily Nurse Practitioner1639285968

Verify Katy Michele Stewart in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 2014006858
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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44% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024

711 Medicare Part D claims for 109 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Katy Stewart711
  2. Specialty average1,280

Most prescribed

  1. Valacyclovir72 claims
  2. Acyclovir52 claims
  3. Fluconazole49 claims
  4. Sulfamethoxazole-Trimethoprim34 claims
  5. Venclexta31 claims
  6. Prednisone30 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): 79.3 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.

  1. Qualityout of 100 · 30% of the final score71.5
  2. Costout of 100 · 30%59.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. Washington UniversitySaint Louis, MO
  2. Washington University Physicians IN Illinois IncShiloh, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katy Michele Stewart among 794 adult health nurse practitioner records in Missouri

Katy Michele Stewart, ANP is one of 794 adult health nurse practitioner records with a practice address in Missouri. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 56% of them.

  • NPI issued2014 · 56% of these records are older, 38% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2013 · median 2013 among the 399 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

332 adult health nurse practitioner records list a practice address in Saint Louis

They are 332 of the 27,605 NPPES records with a practice address in Saint Louis, and 794 adult health nurse practitioner records in Missouri.

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Margaret Benz, APRN-BCSaint Louis, MO 631081154393775
  2. Holly Comer, ANPSaint Louis, MO 631081770790560
  3. Carliss Garrett, ANPSaint Louis, MO 631081154680288
  4. Heidi Hunsel, AGNPSaint Louis, MO 631081194048686
  5. Lisa Koester-Wiedemann, ANPSaint Louis, MO 631081184642662
  6. Grace Pelowski, APRNSaint Louis, MO 631081750907077
  7. Angela Roethemeyer, ANPSaint Louis, MO 631081164846648
  8. Catherine Rogers, ANPSaint Louis, MO 631081073602363

Common questions

What is Katy Michele Stewart, ANP's NPI number?

Katy Michele Stewart, ANP's National Provider Identifier (NPI) is 1437576600, issued on Mar 25, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Katy Michele Stewart, ANP located?

The NPPES record lists a practice address at 4500 Forest Park Ave, Saint Louis, MO, 63108. Phone: (314) 454-8304. Providers update this record themselves, so call before visiting.

How can I verify Katy Michele Stewart, ANP's license?

NPPES lists Missouri license number 2014006858, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Katy Michele Stewart, ANP prescribe under Medicare Part D?

In 2024, Katy Michele Stewart, ANP had 711 Medicare Part D claims for 109 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.

What is Katy Michele Stewart, ANP's MIPS final score?

The 2023 MIPS final score is 79.3 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.