NPPES file of Aug 9, 2026

Michael W. Czajka, APRN-CNP

Pediatric Nurse Practitioner · Saint Louis, MO

Michael W. Czajka, APRN-CNP is a pediatric nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1912941451, issued on Jun 15, 2006. Check the license (Missouri 144420, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912941451
Name
Michael W. Czajka
Credential
APRN-CNP
Primary taxonomy
Pediatric Nurse Practitioner 363LP0200X
License number
144420 MO
Self-reported in NPPES; status is on the state search
Practice location
1465 S Grand Blvd, Saint Louis, MO 63104
Phone
(314) 577-5674
Enumerated
Jun 15, 2006
Record last updated
Oct 29, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(314) 268-4141
Medicaid ID
427508304 MO
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1465 S Grand Blvd

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

  1. Nabil Abboud, MDAnesthesiology Physician1386660504
  2. Elaf AbdelmagidPediatrics Physician1831077627
  3. Michel Adonis, M.D.Pediatrics Physician1497190854
  4. Attila Ahmad, MDPediatric Cardiology Physician1245842699
  5. Emily Ahmad, CPNP-PCPediatric Nurse Practitioner1871875104
  6. Muteen Ahmed, M.B.B.S.Student in an Organized Health Care Education/Training Program1437950466

Verify Michael W. Czajka 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 144420    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

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91% fewer Medicare Part D claims than the average pediatric nurse practitioner in 2024

18 Medicare Part D claims, against an average of 206 among the 854 providers of this specialty who prescribed in Part D.

  1. Michael Czajka18
  2. Specialty average206

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.

381 pediatric nurse practitioner records list a practice address in Saint Louis

They are 381 of the 27,605 NPPES records with a practice address in Saint Louis, and 896 pediatric nurse practitioner records in Missouri.

All 381 in Saint Louis → All 896 in Missouri → Every provider in Saint Louis →

Other pediatric nurse practitioner records in Missouri

  1. Christi Abeln, PNPSaint Louis, MO1023034253
  2. Loren Abernathy, PNPSaint Louis, MO1215583117
  3. Erin Adams, RN, APRN, CPNPO Fallon, MO1912232786
  4. Emily Ahmad, CPNP-PCSaint Louis, MO1871875104
  5. Anne Albers, PNPSaint Louis, MO1184745804
  6. Tara Albert, CPNPSaint Louis, MO1124294764
  7. Tamatha Alexander, APRNIndependence, MO1093365496
  8. Erica AllenSaint Louis, MO1356088538
  9. Robin Allen, FNP-CMexico, MO1376052365
  10. Renae Altenhofen, RN CPNPKansas City, MO1043262157

Common questions

What is Michael W. Czajka, APRN-CNP's NPI number?

Michael W. Czajka, APRN-CNP's National Provider Identifier (NPI) is 1912941451, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael W. Czajka, APRN-CNP located?

The NPPES record lists a practice address at 1465 S Grand Blvd, Saint Louis, MO, 63104. Phone: (314) 577-5674. Providers update this record themselves, so call before visiting.

How can I verify Michael W. Czajka, APRN-CNP's license?

NPPES lists Missouri license number 144420, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Michael W. Czajka, APRN-CNP prescribe under Medicare Part D?

In 2024, Michael W. Czajka, APRN-CNP had 18 Medicare Part D claims; the average among pediatric nurse practitioner prescribers was 206. 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.

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.