Richard M. Chasen, M.D.
NPI 1790780351ActiveIndividual· Internal Medicine, Gastroenterology· Laurel, MD
Internal Medicine, Gastroenterology (M.D.) in Laurel, Maryland, trained at Howard University College of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $395,073 for 547 claims, against $128,186 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 11 companies reporting payments in 2025, $821.23 in all, mostly food and beverage.
Overview
| NPI | 1790780351 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 20, 2005 |
| Last updated in NPPES | Feb 3, 2026 |
| Certified by provider | Feb 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | D0022862 | MD |
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 (DC); Practitioner - Gastroenterology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 392 |
|---|---|
| Services billed | 5,168 across 28 procedure codes |
| Paid by Medicare | $128,186 |
Part D prescriptions in 2024
| Prescriptions (claims) | 547 · 1,380 30-day fills |
|---|---|
| Patients | 157 |
| Total drug cost | $395,073 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Capital Digestive Care LLCRockville, MD · 241 clinicians
Hospital affiliation
- Holy Cross HospitalSilver Spring, MD
Industry payments (Open Payments)
- 2025$821.23 · 30 payments from 11 companies
- 2024$684.70 · 37 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $301.85 | 9 |
| Abbvie Inc. | $107.70 | 5 |
| Genzyme Corporation | $92.76 | 3 |
| Ipsen Biopharmaceuticals, Inc | $78.06 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $73.43 | 3 |
What the 2025 payments were for
- Food and Beverage$821.23 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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