What is Kirsten Sax's NPI number?

Kirsten Sax's National Provider Identifier (NPI) is 1588440523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Kirsten Sax's specialty?

Kirsten Sax is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Kirsten Sax located?

Kirsten Sax's practice location on file with NPPES is 411 Stageline Rd, Hudson, WI 54016-7848.

What is Kirsten Sax's phone number?

The practice phone number listed in the NPPES registry for Kirsten Sax is (715) 531-6700.

Does Kirsten Sax accept Medicare?

Kirsten Sax is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Kirsten Sax's NPI active?

Yes — Kirsten Sax's NPI (1588440523) is active in the NPPES registry as of the last update on 2024-12-02.

IndividualActiveAccepts Medicare

Kirsten Sax, CNP, DNP

NPI 1588440523 · Nurse Practitioner · Hudson, WI

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Kirsten Sax, CNP, DNP is a Nurse Practitioner provider in Hudson, WI (NPI 1588440523).

Provider details

NPI number: 1588440523
Entity type: Individual
Primary specialty: Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: CNP, DNP
Sex: Female
Sole proprietor: No
License: 10725 (MN)

Specialties & taxonomies

Nurse PractitionerPrimary363L00000XLicense 16054 (WI)
Physician Assistants & Advanced Practice Nursing Providers
Nurse Practitioner363L00000XLicense 10725 (MN)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(67/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
2 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
3 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

411 Stageline Rd

Hudson, WI 54016-7848

Phone: (715) 531-6700

Fax: (715) 531-6701

Street-level locationGet directions

More WI providers

Mailing address

8170 33rd Ave S # Ms 21110q

Bloomington, MN 55425-4516

Additional practice locations (2)

200 1st St Sw
Rochester, MN 55905-0002
Phone: (850) 257-4193
1500 Curve Crest Blvd W
Stillwater, MN 55082-6040
Phone: (651) 439-1234
Fax: (651) 275-3325

Enumerated: 2023-09-06
Last updated: 2024-12-02
Certified: 2024-12-02

Frequently asked questions

What is Kirsten Sax's NPI number?: Kirsten Sax's National Provider Identifier (NPI) is 1588440523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Kirsten Sax's specialty?: Kirsten Sax is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Kirsten Sax located?: Kirsten Sax's practice location on file with NPPES is 411 Stageline Rd, Hudson, WI 54016-7848.
What is Kirsten Sax's phone number?: The practice phone number listed in the NPPES registry for Kirsten Sax is (715) 531-6700.
Does Kirsten Sax accept Medicare?: Kirsten Sax is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Kirsten Sax's NPI active?: Yes — Kirsten Sax's NPI (1588440523) is active in the NPPES registry as of the last update on 2024-12-02.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.