Wai Wai Lin, MD
NPI 1033513619ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Dover, DE
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Riverside Physician Services Inc, practicing in Dover, Delaware. Their prescriptions cost Medicare Part D more than their services did: $495,251 for 849 claims, against $25,064 paid for services in 2024. Insulet Corporation was the largest of 9 companies reporting payments in 2025, $459.13 in all, mostly food and beverage. Lists Riverside Doctors' Hospital of Williamsburg and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1033513619 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 10, 2014 |
| Last updated in NPPES | Jul 21, 2022 |
| Certified by provider | Oct 16, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | C1-0023915 | DE |
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 - Endocrinology (NY); Practitioner - Endocrinology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 135 |
|---|---|
| Services billed | 464 across 15 procedure codes |
| Paid by Medicare | $25,064 |
Part D prescriptions in 2024
| Prescriptions (claims) | 849 · 1,860 30-day fills |
|---|---|
| Patients | 159 |
| Total drug cost | $495,251 |
| Generic share | 31% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Riverside Physician Services IncWilliamsburg, VA · 797 clinicians
Hospital affiliations
- Riverside Doctors' Hospital of WilliamsburgWilliamsburg, VA
- Riverside Regional Medical CenterNewport News, VA
- Riverside Walter Reed HospitalGloucester, VA
- Sentara Williamsburg Regional Medical CenterWilliamsburg, VA
Industry payments (Open Payments)
- 2025$459.13 · 13 payments from 9 companies
- 2024$44.83 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Insulet Corporation | $178.01 | 1 |
| Mannkind Corporation | $93.40 | 3 |
| Novo Nordisk Inc | $37.82 | 2 |
| Ascendis Pharma Endocrinology Inc | $35.65 | 2 |
| Beta Bionics, Inc. | $31.86 | 1 |
What the 2025 payments were for
- Food and Beverage$416.63 · 12 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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