Kara Krupp
Kara Krupp is a provider specialising in Optometrist in Ionia, MI, registered under NPI 1003591488. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Ionia, based on OpenStreetMap data collected Oct 8, 2026. Parking is available about 1,015 ft away. A pharmacy sits 0.33 mi from the entrance (Rite Aid), which helps if you leave with a prescription.
Getting here and what is nearby
Convenience Marathon 234 ft ~1 min
121 North Dexter Street, Ionia 48846
Gas station Marathon 284 ft ~2 min
121 North Dexter Street, Ionia 48846
Restaurant Subway 259 ft ~1 min
Parking 526 ft ~2 min
Restaurant Burger King 684 ft ~3 min
251 South Dexter Street, Ionia 48846-2001
Mo-Sa 06:00-22:00; Su 07:00-22:00
Restaurant El Mariachi Mexican Grill 685 ft ~3 min
412 West Main Street
Mo-We,Su 11:00-22:00; Th-Sa 11:00-23:00
Parking 941 ft ~4 min
Parking 1,015 ft ~4 min
Grocery Ionia City Market 0.20 mi ~4 min
Convenience Shell 0.22 mi ~5 min
342 North Dexter Street, Ionia 48846
Gas station Shell 0.22 mi ~5 min
342 North Dexter Street, Ionia 48846
Hotel American Inn & Suites 0.33 mi ~7 min
Pharmacy Rite Aid 0.33 mi ~7 min
Convenience Even More Purks 0.42 mi ~9 min
Gas station Mobil 0.42 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 4901005724 | MI | Optometrist primary |
This provider holds licence 4901005724 issued in MI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Optometry
- PAC ID
- 7012370505
- Enrollment ID
- I20230831000769
Medicare enrolment is recorded as approved under the provider type Practitioner - Optometry. 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 Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 152W00000X | Optometrist | 4901005724 | MI | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003591488 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 21, 2023 |
| Last updated | Aug 14, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
537 W MAIN ST Ionia, MI 48846 (877) 338-9797 |
| Mailing address |
11906 EDEN TRL Eagle, MI 48822 |
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 | 5 | 9 | 1 | 4 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 9 | 2 | 4 | 7 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.