Richard C. Lam, MD
NPI 1003830191ActiveIndividual· Internal Medicine· Sun City, CA
Internal Medicine (MD) in Sun City, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $1,908,174 for 19,731 claims, against $96,825 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 28 companies reporting payments in 2025, $2,607 in all, mostly food and beverage.
Overview
| NPI | 1003830191 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 26, 2006 |
| Last updated in NPPES | Feb 13, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A061542 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 224 |
|---|---|
| Services billed | 1,445 across 30 procedure codes |
| Paid by Medicare | $96,825 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,731 · 40,712 30-day fills |
|---|---|
| Patients | 905 |
| Total drug cost | $1,908,174 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Other facilities
- Advantage Health SystemsHome health agency · Riverside, CA
- Mission Home Health of San Diego LLCHome health agency · San Diego, CA
Industry payments (Open Payments)
- 2025$2,607 · 142 payments from 28 companies
- 2024$1,334 · 60 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $532.21 | 35 |
| Kowa Pharmaceuticals America, Inc. | $284.78 | 13 |
| Amgen Inc. | $223.99 | 14 |
| Novo Nordisk Inc | $179.06 | 13 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $154.97 | 11 |
What the 2025 payments were for
- Food and Beverage$2,607 · 142 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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