NPPES file of Aug 9, 2026

Katherine May

Physician Assistant · Saint Charles, MO

Katherine May is a physician assistant with a practice address in Saint Charles, Missouri, and NPI 1891599635, issued on Apr 2, 2025. Check the license (Missouri 2025011392, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891599635
Name
Katherine May
Primary taxonomy
Physician Assistant 363A00000X
License number
2025011392 MO
Self-reported in NPPES; status is on the state search
Practice location
1475 Kisker RD Ste 200, Saint Charles, MO 63304
Phone
(636) 498-5810
Enumerated
Apr 2, 2025
Record last updated
Jul 2, 2025
Medicare enrollment
Enrolled (PECOS I20250513003743); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 2024
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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8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →

Also registered at 1475 Kisker RD Ste 200

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

  1. Tara Birke, NP (APRN)Nurse Practitioner1619412962
  2. Robert Brown, M.D.Obstetrics & Gynecology Physician1316909872
  3. Lisa DevallNurse Practitioner1699649665
  4. Katherine Dewey, M.D.Obstetrics & Gynecology Physician1194786434
  5. Alante Ghannam, FNPFamily Nurse Practitioner1083153787
  6. Thomas Gutmann, M.D.Internal Medicine Physician1437165834

Verify Katherine May 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 2025011392    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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Bills Medicare through one group practice

  1. Ssm Medical Group IncSaint Louis, MO

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

Katherine May among 1,790 physician assistant records in Missouri

Katherine May is one of 1,790 physician assistant records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 90% of them.

  • NPI issued2025 · 90% of these records are older, 4% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2024 · median 2019 among the 1,250 with a school on file
  • Record last updated2025 · 32% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

22 physician assistant records list a practice address in Saint Charles

They are 22 of the 1,547 NPPES records with a practice address in Saint Charles, and 1,790 physician assistant records in Missouri.

All 1,790 in Missouri → Every provider in Saint Charles → Physician Assistant nationwide →

The 8 physician assistant records with the nearest ZIP codes

  1. Kelly Govro, P.A.Saint Charles, MO 633041467638544
  2. Melanie Pilkenton, PA-CSaint Charles, MO 633041245238401
  3. Jade Sadoff, PA-CSaint Charles, MO 633041184598963
  4. Rachel Tarr, PA-CSaint Charles, MO 633041649397894
  5. Casey GoettelSaint Charles, MO 633031922698109
  6. Tyler Harrelson, PA-CSaint Charles, MO 633031417708223
  7. Emily Hearst, PASaint Charles, MO 633031013621861
  8. Christine Kamp, PASaint Charles, MO 633031689984593

Common questions

What is Katherine May's NPI number?

Katherine May's National Provider Identifier (NPI) is 1891599635, issued on Apr 2, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Katherine May located?

The NPPES record lists a practice address at 1475 Kisker RD Ste 200, Saint Charles, MO, 63304. Phone: (636) 498-5810. Providers update this record themselves, so call before visiting.

How can I verify Katherine May's license?

NPPES lists Missouri license number 2025011392, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.