Douglas T. Dieterich, MD
NPI 1225056070ActiveIndividual· Internal Medicine, Hepatology· New York, NY
Internal Medicine, Hepatology (MD) in New York, New York, trained at New York University School of Medicine (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $135,788 for 217 claims, against $47,915 paid for services in 2024. Gilead Sciences, Inc. was the largest of 7 companies reporting payments in 2025, $127,418 in all, mostly speaking and faculty fees.
Overview
| NPI | 1225056070 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 18, 2006 |
| Last updated in NPPES | Jun 12, 2023 |
| Certified by provider | Jun 12, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hepatology Primary | 207RI0008X | 139595 | NY |
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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 293 |
|---|---|
| Services billed | 634 across 22 procedure codes |
| Paid by Medicare | $47,915 |
Part D prescriptions in 2024
| Prescriptions (claims) | 217 · 332 30-day fills |
|---|---|
| Patients | 56 |
| Total drug cost | $135,788 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Icahn School of Medicine at Mount SinaiNew York, NY · 2,843 clinicians
Hospital affiliation
- Mount Sinai HospitalNew York, NY
Industry payments (Open Payments)
- 2025$127,418 · 136 payments from 7 companies
- 2024$126,967 · 117 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $68,441 | 74 |
| Madrigal Pharmaceuticals | $26,013 | 18 |
| Glaxosmithkline, LLC. | $11,501 | 16 |
| Intercept Pharmaceuticals, Inc. | $8,724 | 6 |
| Ipsen Biopharmaceuticals, Inc | $8,582 | 6 |
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$75,846 · 21 payments
- Consulting Fee$28,120 · 14 payments
- Travel and Lodging$13,852 · 37 payments
- Compensation for serving as faculty or as a speaker for a medical education program$4,960 · 1 payment
- Food and Beverage$4,640 · 63 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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