Thomas John Gniadek, MD PHD
Anatomic Pathology & Clinical Pathology Physician · Saint Louis, MO
Thomas John Gniadek, MD PHD is an anatomic pathology & clinical pathology physician with a practice address in Saint Louis, Missouri, and NPI 1205101334, issued on Mar 22, 2012. Check the license (Missouri 2024018547, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Thomas John Gniadek
- Credential
- MD PHD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License numbers
- 2024018547 MO
036145372 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1402 S Grand Blvd, Saint Louis, MO 63104
- Phone
- (314) 617-2000
- Enumerated
- Mar 22, 2012
- Record last updated
- Jan 7, 2026
- Medicare enrollment
- Enrolled (PECOS I20170522001227); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 348 in Missouri → Look up another NPI →
Also registered at 1402 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 Thomas John Gniadek 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 2024018547Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $1,297.81
3 payments; by number, the most common kind was travel and lodging; the largest payer was Cerus Corporation. The 2,607 providers of this specialty with any payment received $3,565.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Hennepin Healthcare System IncMinneapolis, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas John Gniadek among 348 anatomic pathology & clinical pathology physician records in Missouri
Thomas John Gniadek, MD PHD is one of 348 anatomic pathology & clinical pathology physician records with a practice address in Missouri. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 69% of them.
- NPI issued2012 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2012 · median 2004 among the 189 with a school on file
- Record last updated2026 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Missouri
There are 348 anatomic pathology & clinical pathology physician records in Missouri.
All 348 in Missouri → Every provider in Saint Louis → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Stephanie Burton, M.D.Saint Louis, MO 631041427252337
- Danielle Carpenter, MDSaint Louis, MO 631041376743088
- Jeffrey Craver, MDSaint Louis, MO 631041629035886
- Timothy Fagen, D.O.Saint Louis, MO 631041750315958
- Vivian Hathuc, D.O.Saint Louis, MO 631041073809182
- Friederike Kreisel, MDSaint Louis, MO 631041962428185
- Qing Li, M.D.Saint Louis, MO 631041720009533
- Neelofur Nazeer, M.D.Saint Louis, MO 631041093846545
Common questions
What is Thomas John Gniadek, MD PHD's NPI number?
Thomas John Gniadek, MD PHD's National Provider Identifier (NPI) is 1205101334, issued on Mar 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Thomas John Gniadek, MD PHD located?
The NPPES record lists a practice address at 1402 S Grand Blvd, Saint Louis, MO, 63104. Phone: (314) 617-2000. Providers update this record themselves, so call before visiting.
How can I verify Thomas John Gniadek, MD PHD's license?
NPPES lists Missouri license number 2024018547, 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.
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.