Jennifer Olivia Chan, M.D.
NPI 1265634687ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Walnut Creek, CA
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) with Bass Medical Group, practicing in Walnut Creek, California. Mostly services rather than prescriptions: Medicare paid $49,375 for 68 patients in 2024, with only 41 Part D claims. Intuitive Surgical, Inc. was the largest of 2 companies reporting payments in 2025, $8,714 in all, mostly education. Lists Eden Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1265634687 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 5, 2007 |
| Last updated in NPPES | Nov 13, 2024 |
| Certified by provider | Nov 13, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | A87218 | CA |
| Surgery | 208600000X | A87218 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 68 |
|---|---|
| Services billed | 187 across 47 procedure codes |
| Paid by Medicare | $49,375 |
Part D prescriptions in 2024
| Prescriptions (claims) | 41 · 45 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $923.20 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Thoracic Surgery |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Bass Medical GroupChico, CA · 291 clinicians
Hospital affiliations
- Eden Medical CenterCastro Valley, CA
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- Washington HospitalFremont, CA
Industry payments (Open Payments)
- 2025$8,714 · 8 payments from 2 companies
- 2024$488.08 · 7 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $8,617 | 7 |
| Atricure, Inc. | $97.13 | 1 |
What the 2025 payments were for
- Education$7,750 · 1 payment
- Travel and Lodging$615.70 · 3 payments
- Food and Beverage$348.08 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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