Erin Ernst, RN IBCLC
Erin Ernst, RN IBCLC is a Lactation Consultant (Registered Nurse) in Madison, WI, registered under NPI 1003560731.
Getting there
Here is what surrounds this office in Madison, based on OpenStreetMap data collected Oct 6, 2026. Parking is available about 0.38 mi away. There is EV charging 0.37 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 524 ft away, served by Highland & Waisman (SB). A pharmacy sits 542 ft from the entrance (University Hospital Outpatient Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Transit Highland & University Bay (SB) 345 ft ~2 min
Transit University Bay & Highland (NB) 393 ft ~2 min
Transit Highland & Waisman (SB) 524 ft ~2 min
Pharmacy University Hospital Outpatient Pharmacy 542 ft ~3 min
EV charging 806 ft ~4 min
EV charging 819 ft ~4 min
Coffee EVP Coffee University Bay 887 ft ~4 min
Parking 912 ft ~4 min
Restaurant Sa-Bai Thong 0.24 mi ~5 min
Restaurant Qdoba 0.24 mi ~5 min
2741 University Avenue, Madison 53705
Mo-Su 10:30-22:00
Restaurant Wings Over 0.24 mi ~5 min
Gas station Spirit 0.25 mi ~6 min
Convenience Spirit Mart 0.26 mi ~6 min
2801 University Avenue
EV charging 0.37 mi ~8 min
Parking 0.37 mi ~8 min
2535 University Avenue, Madison 53705
Parking 0.38 mi ~8 min
2500 University Avenue, Madison 53705
Coffee Barriques - University 0.41 mi ~9 min
Hotel InnTowner 0.42 mi ~9 min
Grocery Lee's Oriental 0.49 mi ~10 min
Mo-Sa 11:00-18:00
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 |
|---|---|---|
| 192081-30 | WI | Lactation Consultant (Registered Nurse) primary |
This provider holds licence 192081-30 issued in WI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Lactation Consultant covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WL0100X
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 | 1003560731 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 10, 2022 |
| Last updated | Feb 10, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RN IBCLC |
| Practice address |
1675 HIGHLAND AVE Madison, WI 53792 (608) 890-8227 |
| Mailing address |
7433 OLD SAUK RD UNIT 303 Madison, WI 53717 |
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 | 6 | 0 | 7 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 6 | 0 | 7 | 6 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.