Erick Peiren Chan, MD
NPI 1497817746ActiveIndividual· Internal Medicine, Gastroenterology· Palo Alto, CA
Internal Medicine, Gastroenterology (MD) in Palo Alto, California, trained at Georgetown University School of Medicine (class of 2001). In 2024 Medicare paid $145,584 for 583 patients, and Part D covered 766 of their prescriptions, 73% of them generic. Lilly USA, LLC was the largest of 5 companies reporting payments in 2025, $204.41 in all, mostly food and beverage.
Overview
| NPI | 1497817746 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 14, 2006 |
| Last updated in NPPES | May 27, 2020 |
| Certified by provider | May 27, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A104264 | CA |
| Internal Medicine, Gastroenterology | 207RG0100X | MD426035 | PA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 583 |
|---|---|
| Services billed | 1,530 across 38 procedure codes |
| Paid by Medicare | $145,584 |
Part D prescriptions in 2024
| Prescriptions (claims) | 766 · 1,231 30-day fills |
|---|---|
| Patients | 425 |
| Total drug cost | $187,023 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliations
- Peninsula Medical CenterBurlingame, CA
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$204.41 · 6 payments from 5 companies
- 2024$78.61 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $68.13 | 2 |
| Glaxosmithkline, LLC. | $57.09 | 1 |
| Novo Nordisk Inc | $32.40 | 1 |
| Abbvie Inc. | $26.89 | 1 |
| Janssen Biotech, Inc. | $19.90 | 1 |
What the 2025 payments were for
- Food and Beverage$204.41 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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