Quick answers
- Where does Daniel T. Oconnor see patients?
- Medicare's clinician data lists 1 practice location in Elm Grove, WI. Call before your visit to confirm the address.
- What is Daniel T. Oconnor's specialty?
- Medicare lists Preventive Medicine as the primary specialty, and also General Practice.
- Does Daniel T. Oconnor accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel T. Oconnor accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Daniel T. Oconnor?
- (414) 736-1317, as listed in official Medicare / NPI Registry data.
- What is Daniel T. Oconnor's NPI number?
- 1952478927. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Daniel T. Oconnor is enrolled with Medicare (CMS data updated 2026-10-02).
- 15255 Watertown Plank Rd, Suite 200Elm Grove, WI 53122 (414) 736‑1317
Group practices
Medicare enrollment lists Daniel T. Oconnor as a member of this group (CMS data updated 2026-10-02).
- Rae Holdings Ltd3 clinicians in the group
Specialties
- Preventive Medicineprimary
- General Practicealso
Other preventive medicine doctors in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952478927 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians