William Wan Kao, M.D.
NPI 1821257924ActiveIndividual· Urology· Largo, MD
Urology (M.D.) with Kaiser Foundation Health Plan of the Mid Atlantic States, Inc, practicing in Largo, Maryland. Their prescriptions cost Medicare Part D more than their services did: $39,494 for 884 claims, against $11,435 paid for services in 2024. Lists Holy Cross Hospital as a hospital affiliation.
Overview
| NPI | 1821257924 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2008 |
| Last updated in NPPES | Jun 22, 2021 |
| Certified by provider | Jun 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | D0068713 | MD |
| Urology | 208800000X | 24214 | WV |
| Urology | 208800000X | 0101255682 | VA |
| Urology | 208800000X | MD042222 | DC |
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 - Urology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 134 across 27 procedure codes |
| Paid by Medicare | $11,435 |
Part D prescriptions in 2024
| Prescriptions (claims) | 884 · 2,231 30-day fills |
|---|---|
| Patients | 313 |
| Total drug cost | $39,494 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Kaiser Foundation Health Plan of the Mid Atlantic States, IncLargo, MD · 1,899 clinicians
Hospital affiliation
- Holy Cross HospitalSilver Spring, MD
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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