ROBERT & WILLIAM HASS OPTOMETRISTS PROFESSIONAL CORP – Optometrist, NPI 1275640740
Optometrist
Main info
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for ROBERT & WILLIAM HASS OPTOMETRISTS PROFESSIONAL CORP
1180, West Broad Street, Chesaning Township, Saginaw County, Michigan, 48616, United States
CHESANING, MI 486161006
Phone: (989) 845-3835
Fax: (989) 845-3982
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-09-30
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Past revalidation due date
Earliest CMS due date was 2024-08-31 (653 days ago).
Enrollment records
2
Earliest due date
2024-08-31
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| O20071026000539 | O | Clinic/Group Practice | MI | TBD |
| O20100930063933 | O | Physician - Optometrist | MI | 2024-08-31 |
What to do next
- Verify current status on the CMS Revalidation Lookup Tool immediately.
- Complete revalidation in PECOS or contact your Medicare Administrative Contractor (MAC).
- Overdue revalidation can lead to deactivation of Medicare billing privileges.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 48616)
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