William B. Hass, OD
NPI 1972598258ActiveIndividual· Optometrist· Chesaning, MI
Optometrist (OD) in Chesaning, Michigan, trained at Illinois College of Optometry at Chicago (class of 1976). 132 Medicare patients in 2024, $13,507 paid; nearly all of their 113 Part D prescriptions were generic (93%). Biotissue Holdings Inc. reported $98.41 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1972598258 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Sep 13, 2005 |
| Last updated in NPPES | May 30, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 4901002552 | MI |
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 - Optometry (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 132 |
|---|---|
| Services billed | 238 across 15 procedure codes |
| Paid by Medicare | $13,507 |
Part D prescriptions in 2024
| Prescriptions (claims) | 113 · 200 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $5,527 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Illinois College of Optometry at Chicago |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Optometry |
Medical group
- Robert and William Hass Optometrists Professional CorpChesaning, MI · 3 clinicians
Industry payments (Open Payments)
- 2024$98.41 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Biotissue Holdings Inc. | $98.41 | 1 |
What the 2024 payments were for
- Food and Beverage$98.41 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Optometrist providers in Chesaning
- 1053032912
- 1285847509
- 1285603092
- 1275640740
- 1861461766
- 1679542633
- 1770552671