Eldad Bialecki, M.D.
NPI 1003952458 · Gastroenterology Physician · O Fallon, MO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eldad Bialecki, M.D. is a Gastroenterology Physician provider in O Fallon, MO (NPI 1003952458).
Provider details
- NPI number
- 1003952458
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2003013331 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
537 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 175 | $76 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 58 | $126 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 52 | $103 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 51 | $239 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 33 | $154 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 224 | 220 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 186 | 181 |
| Omeprazole | 183 | 88 |
| Famotidine | 182 | 69 |
| Pantoprazole Sodium | 125 | 53 |
| Sucralfate | 101 | 45 |
| Dicyclomine Hcl | 69 | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,013 across 170 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 (1)
- 70 Jungermann Cir Ste 201Saint Peters, MO 63376-1619Phone: (636) 916-9615
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2026-03-17
- Certified
- 2026-03-17
Frequently asked questions
- What is Eldad Bialecki's NPI number?
- Eldad Bialecki's National Provider Identifier (NPI) is 1003952458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eldad Bialecki's specialty?
- Eldad Bialecki is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Eldad Bialecki located?
- Eldad Bialecki's practice location on file with NPPES is 20 Progress Point Pkwy Ste 206, O Fallon, MO 63368-2207.
- What is Eldad Bialecki's phone number?
- The practice phone number listed in the NPPES registry for Eldad Bialecki is (636) 344-1073.
- Does Eldad Bialecki accept Medicare?
- Eldad Bialecki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eldad Bialecki's NPI active?
- Yes — Eldad Bialecki's NPI (1003952458) is active in the NPPES registry as of the last update on 2026-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.