Prabha Ranganathan, MD
NPI 1003832304ActiveIndividual· Internal Medicine, Rheumatology· Saint Louis, MO
Internal Medicine, Rheumatology (MD) with Washington University, practicing in Saint Louis, Missouri. Their prescriptions cost Medicare Part D more than their services did: $2,096,096 for 990 claims, against $47,361 paid for services in 2024. Astrazeneca Uk Limited was the largest of 3 companies reporting payments in 2025, $1,359 in all, mostly travel and lodging. Lists Alton Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1003832304 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 14, 2006 |
| Last updated in NPPES | Sep 8, 2025 |
| Certified by provider | Sep 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 106169 | 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 - Rheumatology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 246 |
|---|---|
| Services billed | 1,605 across 27 procedure codes |
| Paid by Medicare | $47,361 |
Part D prescriptions in 2024
| Prescriptions (claims) | 990 · 1,960 30-day fills |
|---|---|
| Patients | 150 |
| Total drug cost | $2,096,096 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
Medical group
- Washington UniversitySaint Louis, MO · 3,029 clinicians
Hospital affiliations
- Alton Memorial HospitalAlton, IL
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Memorial HospitalBelleville, IL
- Missouri Baptist Medical CenterSaint Louis, MO
Industry payments (Open Payments)
- 2025$1,359 · 10 payments from 3 companies
- 2024$121.16 · 7 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Uk Limited | $1,213 | 6 |
| Amgen Inc. | $76.27 | 1 |
| Pfizer Inc. | $69.75 | 3 |
What the 2025 payments were for
- Travel and Lodging$925.30 · 2 payments
- Food and Beverage$397.42 · 7 payments
- Education$36.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Rheumatology providers in Saint Louis
- 1770544066
- 1730396532
- 1891774329
- 1114452877
- 1578917464
- 1043222706
- 1356830830
- 1245258946
- 1063507531
- 1891140992
- 1821619651
- 1669425989