Tuan T. Lam, M.D.
NPI 1124290713ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Fountain Valley, CA
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) in Fountain Valley, California, trained at Johns Hopkins University School of Medicine (class of 1997). Mostly services rather than prescriptions: Medicare paid $127,932 for 114 patients in 2024, with only 47 Part D claims. Abbott Laboratories was the largest of 9 companies reporting payments in 2025, $1,250 in all, mostly food and beverage.
Overview
| NPI | 1124290713 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 24, 2008 |
| Last updated in NPPES | May 8, 2026 |
| Certified by provider | May 8, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | A69720 | CA |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | 0101102688 | VA |
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 - Cardiovascular Disease (Cardiology) (CA); Practitioner - Thoracic Surgery (IA); Practitioner - Thoracic Surgery (MI); Practitioner - Thoracic Surgery (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 114 |
|---|---|
| Services billed | 280 across 55 procedure codes |
| Paid by Medicare | $127,932 |
Part D prescriptions in 2024
| Prescriptions (claims) | 47 · 59 30-day fills |
|---|---|
| Patients | 17 |
| Total drug cost | $2,082 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Memorialcare Medical FoundationLong Beach, CA · 566 clinicians
- Mymichigan Medical Center MidlandMidland, MI · 507 clinicians
Hospital affiliations
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Mymichigan Medical Center MidlandMidland, MI
Other facilities
- Mymichigan Home CareHome health agency · Midland, MI
Industry payments (Open Payments)
- 2025$1,250 · 19 payments from 9 companies
- 2024$1,904 · 31 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $317.19 | 2 |
| Edwards Lifesciences Corporation | $278.82 | 5 |
| Bolton Medical Inc | $219.00 | 1 |
| Atricure, Inc. | $190.70 | 4 |
| Abiomed | $131.20 | 1 |
What the 2025 payments were for
- Food and Beverage$1,031 · 18 payments
- Travel and Lodging$219.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in Fountain Valley
- 1831379270
- 1912133166
- 1720042864
- 1871812727
- 1487693735
- 1841652385
All Thoracic Surgery (Cardiothoracic Vascular Surgery) providers in California →