William Stuart Asch, M.D., PH.D.
NPI 1003933326ActiveIndividual· Internal Medicine, Nephrology· New Haven, CT
Internal Medicine, Nephrology (M.D., PH.D.) in New Haven, Connecticut, trained at State University of New York at Stony Brook, School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $217,836 for 1,841 claims, against $46,057 paid for services in 2024.
Overview
| NPI | 1003933326 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PH.D. |
| Sole proprietor | No |
| NPI issued | Mar 23, 2007 |
| Last updated in NPPES | Oct 27, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 044496 | CT |
| Internal Medicine | 207R00000X | 044496 | CT |
| Hospitalist | 208M00000X | 044496 | CT |
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 - Nephrology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 228 |
|---|---|
| Services billed | 634 across 18 procedure codes |
| Paid by Medicare | $46,057 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,841 · 3,425 30-day fills |
|---|---|
| Patients | 279 |
| Total drug cost | $217,836 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Yale UniversityNew Haven, CT · 2,645 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Greenwich Hospital Association -Greenwich, CT
- Lawrence & Memorial HospitalNew London, CT
- St Francis Hospital & Medical CenterHartford, CT
- Yale-New Haven HospitalNew Haven, CT
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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