Philip T. Chen, MD
NPI 1073796728ActiveIndividual· Internal Medicine, Gastroenterology· Riverside, CA
Internal Medicine, Gastroenterology (MD) in Riverside, California, trained at George Washington University School of Medicine (class of 2002). In 2024 Medicare paid $404,556 for 545 patients, and Part D covered 1,491 of their prescriptions, 84% of them generic. Madrigal Pharmaceuticals was the largest of 9 companies reporting payments in 2025, $647.34 in all, mostly food and beverage.
Overview
| NPI | 1073796728 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 17, 2007 |
| Last updated in NPPES | Dec 2, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A84641 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 545 |
|---|---|
| Services billed | 20,779 across 36 procedure codes |
| Paid by Medicare | $404,556 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,491 · 2,697 30-day fills |
|---|---|
| Patients | 500 |
| Total drug cost | $337,887 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- United Medical DoctorsMurrieta, CA · 173 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
Industry payments (Open Payments)
- 2025$647.34 · 25 payments from 9 companies
- 2024$1,093 · 31 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $244.21 | 5 |
| Janssen Biotech, Inc. | $160.99 | 8 |
| Phathom Pharmaceuticals, Inc. | $92.21 | 4 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $36.81 | 2 |
| Ipsen Biopharmaceuticals, Inc | $33.86 | 1 |
What the 2025 payments were for
- Food and Beverage$607.78 · 24 payments
- Education$39.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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