Leonard B. Weinstock, MD
NPI 1467566703ActiveIndividual· Internal Medicine, Gastroenterology· Creve Coeur, MO
Internal Medicine, Gastroenterology (MD) in Creve Coeur, Missouri, trained at University of Rochester School of Medicine and Dentistry (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $2,444,356 for 2,906 claims, against $416,261 paid for services in 2024. Genzyme Corporation was the largest of 21 companies reporting payments in 2025, $6,055 in all, mostly food and beverage.
Overview
| NPI | 1467566703 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 17, 2006 |
| Last updated in NPPES | Mar 6, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | R4F99 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 851 |
|---|---|
| Services billed | 16,825 across 58 procedure codes |
| Paid by Medicare | $416,261 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,906 · 4,394 30-day fills |
|---|---|
| Patients | 1,040 |
| Total drug cost | $2,444,356 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of Rochester School of Medicine and Dentistry |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Digestive Health Specialists LLCOverland Park, KS · 69 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Mercy Hospital St LouisSaint Louis, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2025$6,055 · 215 payments from 21 companies
- 2024$3,669 · 187 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $1,900 | 7 |
| Abbvie Inc. | $1,258 | 62 |
| Janssen Biotech, Inc. | $672.12 | 25 |
| Takeda Pharmaceuticals U.S.A., Inc. | $359.64 | 23 |
| Aimmune Therapeutics, Inc. | $300.62 | 13 |
What the 2025 payments were for
- Food and Beverage$4,222 · 213 payments
- Consulting Fee$1,756 · 1 payment
- Education$76.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Creve Coeur
- 1669523270
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- 1760592794
- 1750495099
- 1447266432
All Internal Medicine, Gastroenterology providers in Missouri →