Meher S. Mallick, M.D.
NPI 1093789034ActiveIndividual· Internal Medicine, Nephrology· Saint Louis, MO
Internal Medicine, Nephrology (M.D.) with Deaconess Illinois Specialty Clinic, Inc. and 3 other groups, practicing in Saint Louis, Missouri. Their prescriptions cost Medicare Part D more than their services did: $118,371 for 1,551 claims, against $63,454 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 13 companies reporting payments in 2025, $651.50 in all, mostly food and beverage. Lists Jersey Community Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1093789034 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 15, 2006 |
| Last updated in NPPES | May 29, 2026 |
| Certified by provider | May 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 2001009904 | MO |
| Internal Medicine, Nephrology | 207RN0300X | 036.099093 | IL |
| Specialist | 174400000X | 2001009904 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL); Practitioner - Nephrology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 534 across 12 procedure codes |
| Paid by Medicare | $63,454 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,551 · 3,643 30-day fills |
|---|---|
| Patients | 301 |
| Total drug cost | $118,371 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical groups
- Deaconess Illinois Specialty Clinic, Inc.Harrisburg, IL · 148 clinicians
- Southern Illinois Healthcare Foundation IncEast Saint Louis, IL · 119 clinicians
- Sparta Community Hospital D/B/A Quality Healthcare ClinicsSparta, IL · 42 clinicians
- St Louis Medical Clinic, P.C.Saint Louis, MO · 11 clinicians
Hospital affiliations
- Jersey Community HospitalJerseyville, IL
- Memorial HospitalChester, IL
- Red Bud Regional HospitalRed Bud, IL
- Sparta Community HospitalSparta, IL
- Touchette Regional Hospital IncCentreville, IL
Other facilities
- Davita Jerseyville DialysisDialysis facility · Jerseyville, IL
- Davita Red Bud DialysisDialysis facility · Red Bud, IL
Industry payments (Open Payments)
- 2025$651.50 · 22 payments from 13 companies
- 2024$420.97 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $342.47 | 7 |
| Lilly USA, LLC | $38.00 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $34.88 | 1 |
| Calliditas Therapeutics US Inc. | $32.81 | 1 |
| Novo Nordisk Inc | $32.27 | 1 |
What the 2025 payments were for
- Food and Beverage$619.23 · 21 payments
- Education$32.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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