GREAT LAKES EYE INSTITUTE
GREAT LAKES EYE INSTITUTE is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003437823, based in Bay City, MI. It is classified under Ophthalmology Physician.
Getting there
Here is what surrounds this office in Bay City, based on OpenStreetMap data collected Sep 26, 2026. Parking is available about 0.29 mi away.
Getting here and what is nearby
Parking 905 ft ~4 min
Parking 0.28 mi ~6 min
Parking 0.29 mi ~6 min
Restaurant Chan's Garden 0.39 mi ~8 min
Restaurant Zef's Coney Restaurant 0.42 mi ~9 min
Restaurant G's Pizzeria 0.47 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Dme Supplier - Physician - Ophthalmology
- PAC ID
- 5799699534
- Enrollment ID
- O20200625000848
Medicare enrolment is recorded as approved under the provider type Dme Supplier - Physician - Ophthalmology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Ophthalmology covers
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses. NUCC Health Care Provider Taxonomy, code 207W00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003437823 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | May 4, 2020 |
| Last updated | May 4, 2020 |
| Status | Active |
| Practice address |
800 WOODSIDE AVE Bay City, MI 48708 (989) 793-2820 Fax (989) 755-1463 |
| Mailing address |
2393 SCHUST RD Saginaw, MI 48603 |
| Other identifiers |
1427090976
· Medicaid (MI) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 4 | 3 | 7 | 8 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 3 | 5 | 8 | 4 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.