Walter Brummund, M.D.,PHD
Walter Brummund, M.D.,PHD is a Clinical & Laboratory Immunology (Allergy & Immunology) Physician in Wauwatosa, WI, registered under NPI 1487708988. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 2500 N MAYFAIR RD SUITE 220, Wauwatosa, WI 53226. 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
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
- Practitioner - Allergy/immunology
- PAC ID
- 3870628449
- Enrollment ID
- I20100322000375
Medicare enrolment is recorded as approved under the provider type Practitioner - Allergy/immunology. 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 Clinical & Laboratory Immunology covers
An allergy and immunology physician who specializes in clinical and laboratory immunology disease management.. NUCC Health Care Provider Taxonomy, code 207KI0005X
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 | |
|---|---|---|---|---|
| 207KI0005X | Clinical & Laboratory Immunology (Allergy & Immunology) Physician Clinical & Laboratory Immunology | — | WI | primary |
| 207KA0200X | Allergy Physician Allergy | — | WI |
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 | 1487708988 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 22, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D.,PHD |
| Practice address |
2500 N MAYFAIR RD SUITE 220 Wauwatosa, WI 53226 (414) 475-9101 Fax (414) 475-9203 |
| Mailing address |
1701 WEDGEWOOD DR W Elm Grove, WI 53122 |
| Other identifiers |
30667400
· Medicaid (WI) |
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 | 4 | 8 | 7 | 7 | 0 | 8 | 9 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 7 | 7 | 5 | 0 | 7 | 9 | 7 |
Sum = 72 · next multiple of 10 = 80 · 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.