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Michael O'Brien, MD
NPI 1144203241 · Internal Medicine Physician · La Crosse, WI
Michael O'Brien, MD is a Internal Medicine Physician provider in La Crosse, WI (NPI 1144203241).
Provider details
- NPI number
- 1144203241
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 29161 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
700 West Ave S
La Crosse, WI 54601-4783
Phone: (608) 785-0940
Street-level locationGet directions
Mailing address
Po Box 1510
Eau Claire, WI 54702-1510
Registry dates
- Enumerated
- 2005-11-22
- Last updated
- 2020-01-20
- Certified
- 2020-01-20
Frequently asked questions
- What is Michael O'Brien's NPI number?
- Michael O'Brien's National Provider Identifier (NPI) is 1144203241, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Brien's specialty?
- Michael O'Brien is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael O'Brien located?
- Michael O'Brien's practice location on file with NPPES is 700 West Ave S, La Crosse, WI 54601-4783.
- What is Michael O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Brien is (608) 785-0940.
- Is Michael O'Brien's NPI active?
- Yes — Michael O'Brien's NPI (1144203241) is active in the NPPES registry as of the last update on 2020-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.