Quick answers
- Where does Patrick M. O'Callaghan see patients?
- Medicare's clinician data lists 1 practice location in Mandeville, LA. Call before your visit to confirm the address.
- What is Patrick M. O'Callaghan's specialty?
- Medicare lists Clinical Psychologist as the primary specialty.
- Does Patrick M. O'Callaghan accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick M. O'Callaghan 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 Patrick M. O'Callaghan?
- (985) 626-1717, as listed in official Medicare / NPI Registry data.
- What is Patrick M. O'Callaghan's NPI number?
- 1386908754. 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 Patrick M. O'Callaghan is enrolled with Medicare (CMS data updated 2026-10-02).
- 201 Saint Ann Dr BMandeville, LA 70471 (985) 626‑1717
Group practices
Medicare enrollment lists Patrick M. O'Callaghan as a member of this group (CMS data updated 2026-10-02).
- St Tammany Parish Hospital Service District No 1166 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Mandeville
Clinicians with the same Medicare primary specialty in Mandeville, LA — not a recommendation.
Clinician information
| Medical school | Louisiana State University School Of Medicine In New Orleans |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386908754 |
| 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