What is Mary Jo Brennan's NPI number?

Mary Jo Brennan's National Provider Identifier (NPI) is 1134406671, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mary Jo Brennan's specialty?

Mary Jo Brennan is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).

Where is Mary Jo Brennan located?

Mary Jo Brennan's practice location on file with NPPES is 1021 Summit Ave, Oconomowoc, WI 53066-4457.

What is Mary Jo Brennan's phone number?

The practice phone number listed in the NPPES registry for Mary Jo Brennan is (262) 567-9173.

Is Mary Jo Brennan's NPI active?

Yes — Mary Jo Brennan's NPI (1134406671) is active in the NPPES registry as of the last update on 2011-11-11.

IndividualActive

Mary Jo Brennan

NPI 1134406671 · Pharmacist · Oconomowoc, WI

Mary Jo Brennan is a Pharmacist provider in Oconomowoc, WI (NPI 1134406671).

Provider details

NPI number: 1134406671
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Sex: Female
Sole proprietor: No
License: 08261-040 (WI)

Practice location

1021 Summit Ave

Oconomowoc, WI 53066-4457

Phone: (262) 567-9173

Fax: (262) 567-3034

Street-level locationGet directions

More WI providers

Mailing address

1021 Summit Ave

Oconomowoc, WI 53066-4457

Specialties & taxonomies

PharmacistPrimary183500000XLicense 08261-040 (WI)
Pharmacy Service Providers

Profile Score

Detailed profile(81/100 index)

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

Registry tenure38% of score
15 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: 2011-11-11
Last updated: 2011-11-11

Frequently asked questions

What is Mary Jo Brennan's NPI number?: Mary Jo Brennan's National Provider Identifier (NPI) is 1134406671, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mary Jo Brennan's specialty?: Mary Jo Brennan is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
Where is Mary Jo Brennan located?: Mary Jo Brennan's practice location on file with NPPES is 1021 Summit Ave, Oconomowoc, WI 53066-4457.
What is Mary Jo Brennan's phone number?: The practice phone number listed in the NPPES registry for Mary Jo Brennan is (262) 567-9173.
Is Mary Jo Brennan's NPI active?: Yes — Mary Jo Brennan's NPI (1134406671) is active in the NPPES registry as of the last update on 2011-11-11.

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