Quick answers
- Where does Patrick Mathiasen see patients?
- Medicare's clinician data lists 4 practice locations, including Las Vegas, NV, Seattle, WA and Reno, NV. Call before your visit to confirm the address.
- What is Patrick Mathiasen's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Patrick Mathiasen accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick Mathiasen 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.
- Does Patrick Mathiasen offer telehealth?
- Medicare's clinician data says Patrick Mathiasen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Patrick Mathiasen?
- (832) 869-4818, as listed in official Medicare / NPI Registry data.
- What is Patrick Mathiasen's NPI number?
- 1316962145. 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 Mathiasen is enrolled with Medicare (CMS data updated 2026-10-02).
- 2870 S Maryland Pkwy, Suite 230Las Vegas, NV 89109 (832) 869‑4818
- 509 Olive Way, Suite 1259Seattle, WA 98101
- 639 Isbell Rd, Suite 380Reno, NV 89509 (832) 869‑4818
- 916 Pacific Ave, Fl 7Everett, WA 98201 (425) 446‑3000
Group practices
Medicare enrollment lists Patrick Mathiasen as a member of these groups (CMS data updated 2026-10-02).
- Psychiatry of Texas PLLC447 clinicians in the group
- BHC Fairfax Hospital Inc31 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Las Vegas
Clinicians with the same Medicare primary specialty in Las Vegas, NV — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota, Duluth School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1316962145 |
| 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