Stephen Gunnink, DO
Stephen Gunnink, DO is a Pediatric Emergency Medicine (Pediatrics) Physician in Grand Rapids, MI, registered under NPI 1912427402. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 100 MICHIGAN ST. SE, Grand Rapids, MI 49503. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 5101025654 | MI | Pediatric Emergency Medicine (Pediatrics)… primary |
| 5101025654 | MI | Anesthesiology Physician |
| 5101025654 | MI | Medical Toxicology (Emergency Medicine)… |
This provider holds licence 5101025654 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 - Pediatric Medicine
- PAC ID
- 1850661471
- Enrollment ID
- I20201217002915
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. 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 Pediatric Emergency Medicine covers
A pediatrician who has special qualifications to manage emergencies in infants and children. NUCC Health Care Provider Taxonomy, code 2080P0204X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2080P0204X | Pediatric Emergency Medicine (Pediatrics) Physician Pediatric Emergency Medicine | 5101025654 | MI | primary |
| 207L00000X | Anesthesiology Physician | 5101025654 | MI | |
| 207PT0002X | Medical Toxicology (Emergency Medicine) Physician Medical Toxicology | 5101025654 | MI |
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 | 1912427402 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 26, 2017 |
| Last updated | Jan 22, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | DO |
| Practice address |
100 MICHIGAN ST. SE Grand Rapids, MI 49503 (616) 267-1090 |
| Mailing address |
4100 EMBASSY DR SE STE 400 Grand Rapids, MI 49546 |
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 | 9 | 1 | 2 | 4 | 2 | 7 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 2 | 2 | 8 | 2 | 5 | 4 | 0 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
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.