Si-Hoi Lam, M.D.
NPI 1477574929ActiveIndividual· Internal Medicine· Branford, CT
Internal Medicine (M.D.) in Branford, Connecticut, trained at University of Chicago, Pritzker School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $352,023 for 3,155 claims, against $86,290 paid for services in 2024. Amgen Inc. was the largest of 6 companies reporting payments in 2025, $386.32 in all, mostly food and beverage.
Overview
| NPI | 1477574929 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 21, 2006 |
| Last updated in NPPES | Jul 30, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 024800 | CT |
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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 76 |
|---|---|
| Services billed | 1,768 across 39 procedure codes |
| Paid by Medicare | $86,290 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,155 · 7,824 30-day fills |
|---|---|
| Patients | 238 |
| Total drug cost | $352,023 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Yale New Haven Health - Health at HomeHome health agency · Milford, CT
Industry payments (Open Payments)
- 2025$386.32 · 18 payments from 6 companies
- 2024$751.37 · 27 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $278.86 | 12 |
| Lilly USA, LLC | $39.86 | 2 |
| Eisai Inc. | $17.86 | 1 |
| Novo Nordisk Inc | $17.74 | 1 |
| Xeris Pharmaceuticals, Inc. | $16.39 | 1 |
What the 2025 payments were for
- Food and Beverage$386.32 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 internal medicine physicians in Branford · All internal medicine physicians in Connecticut