Sarah Rumler, DO
Sarah Rumler, DO is a Pediatric Hematology & Oncology Physician in Milwaukee, WI, registered under NPI 1003221896.
Getting there
Here is what surrounds this office in Milwaukee, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.22 mi away at Parking 1. The nearest transit stop is 0.30 mi away, served by Froedtert Hospital. A pharmacy sits 0.43 mi from the entrance (Pick n Save Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Parking 265 ft ~2 min
8701 West Wisconsin Avenue, Wauwatosa 53226
Parking Specialty Clinics Parking - Orange 723 ft ~3 min
8700 Doyne Avenue, Wauwatosa 53226
Parking Parking 1 0.22 mi ~5 min
850 North 92nd Street, Wauwatosa 53226
Coffee Stone Creek Coffee 0.27 mi ~6 min
Restaurant Bruegger's Bagels 0.27 mi ~6 min
Transit Bluemound Road & Glenview Avenue 0.28 mi ~6 min
Transit 92nd Street & Wisconsin 0.29 mi ~6 min
Transit Froedtert Hospital 0.30 mi ~7 min
Coffee Starbucks 0.35 mi ~7 min
Restaurant La Fuente 0.35 mi ~7 min
Convenience Speedway 0.37 mi ~8 min
Gas station Speedway 0.37 mi ~8 min
Grocery Pick 'n Save 0.42 mi ~9 min
8151,8201 West Bluemound Road, Milwaukee 53213
06:00-22:00
Pharmacy Pick n Save Pharmacy 0.43 mi ~9 min
6760 West National Avenue
Mo-Fr 09:00-13:00, 13:30-20:00; Sa 09:00-13:00, 13:30-18:00; Su 10:00-13:00, 14:00-17:00
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 |
|---|---|---|
| 75724 | WI | Pediatric Hematology & Oncology Physician primary |
This provider holds licence 75724 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 - Hematology/oncology
- PAC ID
- 5496076879
- Enrollment ID
- I20210903001879
Medicare enrolment is recorded as approved under the provider type Practitioner - Hematology/oncology. 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 Hematology-Oncology covers
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases. NUCC Health Care Provider Taxonomy, code 2080P0207X
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 | 1003221896 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 30, 2014 |
| Last updated | Jul 26, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | DO |
| Practice address |
9000 W WISCONSIN AVE Milwaukee, WI 53226 (414) 955-4170 Fax (414) 955-6543 |
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 | 2 | 2 | 1 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 2 | 2 | 8 | 9 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.