Naga Prasad Chalasani, MD
NPI 1588628002ActiveIndividual· Internal Medicine, Gastroenterology· Indianapolis, IN
Internal Medicine, Gastroenterology (MD) in Indianapolis, Indiana, trained at Emory University School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $184,402 for 195 claims, against $4,188 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 4 companies reporting payments in 2025, $29,860 in all, mostly consulting fees.
Overview
| NPI | 1588628002 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 13, 2006 |
| Last updated in NPPES | Mar 4, 2025 |
| Certified by provider | Mar 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 01047209A | IN |
| Internal Medicine | 207R00000X | 01047209A | IN |
| Internal Medicine, Gastroenterology | 207RG0100X | 01047209 | IN |
| Internal Medicine, Transplant Hepatology | 207RT0003X | 01047209A | IN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 30 |
|---|---|
| Services billed | 47 across 6 procedure codes |
| Paid by Medicare | $4,188 |
Part D prescriptions in 2024
| Prescriptions (claims) | 195 · 420 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $184,402 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Iu Health Medical Group LLCIndianapolis, IN · 4,462 clinicians
Hospital affiliations
- Indiana University HealthIndianapolis, IN
- Indiana University Health Ball Memorial HospitalMuncie, IN
- Indiana University Health North HospitalCarmel, IN
Industry payments (Open Payments)
- 2025$29,860 · 17 payments from 4 companies
- 2024$89,743 · 18 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $15,544 | 10 |
| Chugai Pharmaceutical Co., Ltd. | $6,053 | 4 |
| Ipsen Bioscience Inc. | $4,205 | 1 |
| Glaxosmithkline, LLC. | $4,058 | 2 |
What the 2025 payments were for
- Consulting Fee$27,698 · 8 payments
- Honoraria$1,600 · 1 payment
- Food and Beverage$561.68 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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