Mary Billerbeck
Mary Billerbeck is a Pediatric Rehabilitation Medicine Physician in Racine, WI, registered under NPI 1427867449.
Getting there
The practice address on file is 414 WILLIAM ST, Racine, WI 53402. 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 |
|---|---|---|
| 2882-24 | WI | Pediatric Rehabilitation Medicine… primary |
This provider holds licence 2882-24 issued in WI. 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 - Physical Therapist In Private Practice
- PAC ID
- 6002336963
- Enrollment ID
- I20250221001653
Medicare enrolment is recorded as approved under the provider type Practitioner - Physical Therapist In Private Practice. 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 Rehabilitation Medicine covers
A physiatrist who utilizes an interdisciplinary approach and addresses the prevention, diagnosis, treatment and management of congenital and childhood-onset physical impairments including related or secondary medical, physical, functional, psychosocial and vocational limitations or conditions, with an understanding of the life course of disability. This physician is trained in the identification of functional capabilities and selection of the best of rehabilitation intervention strategies, with an understanding of the continuum of care. NUCC Health Care Provider Taxonomy, code 2081P0010X
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 | 1427867449 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 3, 2025 |
| Last updated | Jan 3, 2025 |
| Status | Active |
| Sole proprietor | No |
| Practice address |
414 WILLIAM ST Racine, WI 53402 (262) 497-9147 |
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 | 2 | 7 | 8 | 6 | 7 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 4 | 7 | 7 | 6 | 5 | 4 | 8 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
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.