Thomas Gniadek, MD PHD
NPI 1205101334 · Anatomic Pathology & Clinical Pathology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Gniadek, MD PHD is a Anatomic Pathology & Clinical Pathology Physician provider in Saint Louis, MO (NPI 1205101334).
Provider details
- NPI number
- 1205101334
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 036145372 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
4 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,298 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 844 Knollwood RdDeerfield, IL 60015-3313Phone: (203) 806-0125
- 2525 Chicago AveMinneapolis, MN 55404-4518Phone: (612) 813-6000
- 300 S 6th St # Mc604Minneapolis, MN 55487-0999Phone: (612) 596-1036
Registry dates
- Enumerated
- 2012-03-22
- Last updated
- 2026-01-07
- Certified
- 2026-01-07
Frequently asked questions
- What is Thomas Gniadek's NPI number?
- Thomas Gniadek's National Provider Identifier (NPI) is 1205101334, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Gniadek's specialty?
- Thomas Gniadek is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Gniadek located?
- Thomas Gniadek's practice location on file with NPPES is 1402 S Grand Blvd, Saint Louis, MO 63104-1004.
- What is Thomas Gniadek's phone number?
- The practice phone number listed in the NPPES registry for Thomas Gniadek is (314) 617-2000.
- Does Thomas Gniadek accept Medicare?
- Thomas Gniadek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Gniadek's NPI active?
- Yes — Thomas Gniadek's NPI (1205101334) is active in the NPPES registry as of the last update on 2026-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.