Patrick Obrien, MD
NPI 1265427496 · Cardiovascular Disease Physician · Appleton, WI
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Obrien, MD is a Cardiovascular Disease Physician provider in Appleton, WI (NPI 1265427496).
Provider details
- NPI number
- 1265427496
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27747 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2005-09-14
- Last updated
- 2010-02-23
Frequently asked questions
- What is Patrick Obrien's NPI number?
- Patrick Obrien's National Provider Identifier (NPI) is 1265427496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Obrien's specialty?
- Patrick Obrien is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Obrien located?
- Patrick Obrien's practice location on file with NPPES is 1506 S Oneida St, Appleton, WI 54915-1305.
- What is Patrick Obrien's phone number?
- The practice phone number listed in the NPPES registry for Patrick Obrien is (920) 730-6700.
- Does Patrick Obrien accept Medicare?
- Patrick Obrien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Obrien's NPI active?
- Yes — Patrick Obrien's NPI (1265427496) is active in the NPPES registry as of the last update on 2010-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.