Alison Grace Chang, MD
NPI 1205253465ActiveIndividual· Internal Medicine, Hematology & Oncology· Palo Alto, CA
Internal Medicine, Hematology & Oncology (MD) with Sutter Bay Medical Foundation, practicing in Palo Alto, California. In 2024 Medicare paid $4,688,333 for 905 patients, and Part D covered 1,633 of their prescriptions, 78% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $218.32 in all, mostly food and beverage. Lists California Pacific Medical Center- Van Ness Campus and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1205253465 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 26, 2014 |
| Last updated in NPPES | Aug 3, 2020 |
| Certified by provider | Aug 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A139702 | 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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 905 |
|---|---|
| Services billed | 231,918 across 142 procedure codes |
| Paid by Medicare | $4,688,333 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,633 · 3,333 30-day fills |
|---|---|
| Patients | 392 |
| Total drug cost | $4,493,516 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliations
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- Massachusetts General HospitalBoston, MA
- Peninsula Medical CenterBurlingame, CA
- Stanford Health CareStanford, CA
Other facilities
- Sutter Care at HomeHome health agency · Saratoga, CA
Industry payments (Open Payments)
- 2025$218.32 · 4 payments from 3 companies
- 2024$262.37 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $166.29 | 2 |
| Caris Mpi, Inc. | $29.95 | 1 |
| Gilead Sciences, Inc. | $22.08 | 1 |
What the 2025 payments were for
- Food and Beverage$175.07 · 3 payments
- Education$43.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Palo Alto
- 1457538449
- 1891182465
- 1023698388
- 1063652386
- 1962650895
- 1235207911
- 1992182638