Abigail O'Brien, APNP
NPI 1336803378 · Nurse Practitioner · Middleton, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Abigail O'Brien, APNP is a Nurse Practitioner provider in Middleton, WI (NPI 1336803378).
Provider details
- NPI number
- 1336803378
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 234607-30 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-10-26
- Last updated
- 2021-11-02
- Certified
- 2021-11-02
Frequently asked questions
- What is Abigail O'Brien's NPI number?
- Abigail O'Brien's National Provider Identifier (NPI) is 1336803378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Abigail O'Brien's specialty?
- Abigail O'Brien is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Abigail O'Brien located?
- Abigail O'Brien's practice location on file with NPPES is 3030 Laura Ln, Middleton, WI 53562-1872.
- What is Abigail O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Abigail O'Brien is (888) 688-4746.
- Does Abigail O'Brien accept Medicare?
- Abigail O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Abigail O'Brien's NPI active?
- Yes — Abigail O'Brien's NPI (1336803378) is active in the NPPES registry as of the last update on 2021-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.