Natarajan Ravendhran, M.D.
NPI 1821071069ActiveIndividual· Internal Medicine, Gastroenterology· Catonsville, MD
Internal Medicine, Gastroenterology (M.D.) with Johns Hopkins University, practicing in Catonsville, Maryland. Their prescriptions cost Medicare Part D more than their services did: $212,565 for 465 claims, against $71,627 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 12 companies reporting payments in 2025, $29,361 in all, mostly speaking and faculty fees. Lists Johns Hopkins Bayview Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1821071069 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 22, 2005 |
| Last updated in NPPES | Aug 8, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | D19648 | MD |
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 - Gastroenterology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 306 |
|---|---|
| Services billed | 2,228 across 45 procedure codes |
| Paid by Medicare | $71,627 |
Part D prescriptions in 2024
| Prescriptions (claims) | 465 · 994 30-day fills |
|---|---|
| Patients | 145 |
| Total drug cost | $212,565 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1973 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Johns Hopkins UniversityBaltimore, MD · 2,909 clinicians
Hospital affiliations
- Johns Hopkins Bayview Medical CenterBaltimore, MD
- Johns Hopkins Hospital, theBaltimore, MD
Industry payments (Open Payments)
- 2025$29,361 · 69 payments from 12 companies
- 2024$55,125 · 131 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $21,366 | 21 |
| Gilead Sciences, Inc. | $6,840 | 20 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $243.76 | 8 |
| Ipsen Biopharmaceuticals, Inc | $236.77 | 6 |
| Mirum Pharmaceuticals, Inc. | $166.33 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$23,687 · 7 payments
- Food and Beverage$2,756 · 55 payments
- Travel and Lodging$1,861 · 6 payments
- Consulting Fee$1,058 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 gastroenterologists in Catonsville · All gastroenterologists in Maryland