What is Gretchen Sackmann's NPI number?

Gretchen Sackmann's National Provider Identifier (NPI) is 1154570638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gretchen Sackmann's specialty?

Gretchen Sackmann is listed in the NPPES registry with a primary specialty of Audiologist (Speech, Language and Hearing Service Providers).

Where is Gretchen Sackmann located?

Gretchen Sackmann's practice location on file with NPPES is 9000 W Wisconsin Ave Ste B340, Milwaukee, WI 53226-4874.

What is Gretchen Sackmann's phone number?

The practice phone number listed in the NPPES registry for Gretchen Sackmann is (414) 266-2934.

Is Gretchen Sackmann's NPI active?

Yes — Gretchen Sackmann's NPI (1154570638) is active in the NPPES registry as of the last update on 2019-09-03.

IndividualActive

Gretchen Sackmann, AU.D.

NPI 1154570638 · Audiologist · Milwaukee, WI

Gretchen Sackmann, AU.D. is a Audiologist provider in Milwaukee, WI (NPI 1154570638).

Provider details

NPI number: 1154570638
Entity type: Individual
Primary specialty: AudiologistSpeech, Language and Hearing Service Providers
Credential: AU.D.
Sex: Female
Sole proprietor: No
License: 530-156 (WI)

Practice location

9000 W Wisconsin Ave Ste B340

Milwaukee, WI 53226-4874

Phone: (414) 266-2934

Street-level locationGet directions

More WI providers

Mailing address

9000 W Wisconsin Ave # Ms 958

Milwaukee, WI 53226-4874

Specialties & taxonomies

AudiologistPrimary231H00000XLicense 530-156 (WI)
Speech, Language and Hearing Service Providers

Profile Score

Detailed profile(87/100 index)

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

Registry tenure38% of score
18 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Enumerated: 2008-09-09
Last updated: 2019-09-03

Frequently asked questions

What is Gretchen Sackmann's NPI number?: Gretchen Sackmann's National Provider Identifier (NPI) is 1154570638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Gretchen Sackmann's specialty?: Gretchen Sackmann is listed in the NPPES registry with a primary specialty of Audiologist (Speech, Language and Hearing Service Providers).
Where is Gretchen Sackmann located?: Gretchen Sackmann's practice location on file with NPPES is 9000 W Wisconsin Ave Ste B340, Milwaukee, WI 53226-4874.
What is Gretchen Sackmann's phone number?: The practice phone number listed in the NPPES registry for Gretchen Sackmann is (414) 266-2934.
Is Gretchen Sackmann's NPI active?: Yes — Gretchen Sackmann's NPI (1154570638) is active in the NPPES registry as of the last update on 2019-09-03.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions