Benjamin Chang, MD
NPI 1639185143ActiveIndividual· Hospitalist· Mountain View, CA
Hospitalist (MD) in Mountain View, California, trained at University of Michigan Medical School (class of 1998). In 2024 Medicare paid $80,783 for 331 patients, and Part D covered 250 of their prescriptions, 86% of them generic. Heron Therapeutics, Inc. reported $23.93 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1639185143 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 1, 2006 |
| Last updated in NPPES | Feb 22, 2021 |
| Certified by provider | Feb 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A70755 | CA |
| Internal Medicine | 207R00000X | A70755 | CA |
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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 331 |
|---|---|
| Services billed | 825 across 12 procedure codes |
| Paid by Medicare | $80,783 |
Part D prescriptions in 2024
| Prescriptions (claims) | 250 · 279 30-day fills |
|---|---|
| Patients | 124 |
| Total drug cost | $17,456 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- El Camino HealthMountain View, CA
Industry payments (Open Payments)
- 2025$23.93 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heron Therapeutics, Inc. | $23.93 | 1 |
What the 2025 payments were for
- Food and Beverage$23.93 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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