Katherine Brennan
NPI 1932502929 · Nurse Practitioner · Chicago, IL
Katherine Brennan is a Nurse Practitioner provider in Chicago, IL (NPI 1932502929).
Provider details
- NPI number
- 1932502929
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 277001645 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,972 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-10-03
- Last updated
- 2022-02-07
- Certified
- 2022-02-07
Frequently asked questions
- What is Katherine Brennan's NPI number?
- Katherine Brennan's National Provider Identifier (NPI) is 1932502929, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Brennan's specialty?
- Katherine Brennan is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Brennan located?
- Katherine Brennan's practice location on file with NPPES is 225 E Chicago Ave, Chicago, IL 60611-2991.
- What is Katherine Brennan's phone number?
- The practice phone number listed in the NPPES registry for Katherine Brennan is (312) 227-4585.
- Is Katherine Brennan's NPI active?
- Yes — Katherine Brennan's NPI (1932502929) is active in the NPPES registry as of the last update on 2022-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.