Mark Kowalski, D.O.
Emergency Medicine Physician · Saint Louis, MO
Mark Kowalski, D.O. is an emergency medicine physician with a practice address in Saint Louis, Missouri, and NPI 1538116835, issued on May 30, 2006. Check the license (Missouri 114693, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mark Kowalski
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 114693 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10010 Kennerly RD, Saint Louis, MO 63128
- Phone
- (314) 525-1000
- Enumerated
- May 30, 2006
- Record last updated
- Sep 8, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid IDs
- 244748927 MO
1538116835 MO - Medicare enrollment
- Enrolled (PECOS I20070625000236); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1994
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,405 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 Mark Kowalski 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 114693Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average emergency medicine physician in 2024
59 Medicare Part D claims for 50 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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 one group practice
- Camden Emergency Group LLCOsage Beach, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Kowalski among 1,405 emergency medicine physician records in Missouri
Mark Kowalski, D.O. is one of 1,405 emergency medicine physician records with a practice address in Missouri. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1994 · median 2012 among the 808 with a school on file
- Record last updated2015 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
398 emergency medicine physician records list a practice address in Saint Louis
They are 398 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,405 emergency medicine physician records in Missouri.
All 1,405 in Missouri → Every provider in Saint Louis → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Stephen Hantman, MDSt Louis, MO 631281316010358
- Robert Hibbard, MDSt Louis, MO 631281285787093
- Harlan Hodges, MDSaint Louis, MO 631281063494581
- Kevin Journagan, MDSaint Louis, MO 631281952492969
- Frank Kainz, MDSt Louis, MO 631281023222486
- Justin Moody, D.O.Saint Louis, MO 631281639370489
- Hawnwan Moy, MDSaint Louis, MO 631281407017569
- Joseph Schuster, D.O.Saint Louis, MO 631281275829046
Common questions
What is Mark Kowalski, D.O.'s NPI number?
Mark Kowalski, D.O.'s National Provider Identifier (NPI) is 1538116835, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Kowalski, D.O. located?
The NPPES record lists a practice address at 10010 Kennerly RD, Saint Louis, MO, 63128. Phone: (314) 525-1000. Providers update this record themselves, so call before visiting.
How can I verify Mark Kowalski, D.O.'s license?
NPPES lists Missouri license number 114693, 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 Mark Kowalski, D.O. prescribe under Medicare Part D?
In 2024, Mark Kowalski, D.O. had 59 Medicare Part D claims for 50 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.