Quick answers
- Where does Matthew T. Harrington see patients?
- Medicare's clinician data lists 9 practice locations, including Costa Mesa, CA, Calabasas, CA and Manhattan Beach, CA. Call before your visit to confirm the address.
- What is Matthew T. Harrington's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Matthew T. Harrington accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew T. Harrington 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 Matthew T. Harrington?
- (949) 688-2010, as listed in official Medicare / NPI Registry data.
- What is Matthew T. Harrington's NPI number?
- 1376097519. 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 Matthew T. Harrington is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 235 E 17th StCosta Mesa, CA 92627 (949) 688‑2010
- 26777 Agoura Rd, Suite B4Calabasas, CA 91302 (818) 880‑2225
- 3215 N Sepulveda BlvdManhattan Beach, CA 90266 (424) 295‑0540
- 3932 Long Beach Blvd, Suite ALong Beach, CA 90807 (562) 855‑2800
- 4143 Campus Dr, Suite C200Irvine, CA 92612 (949) 471‑0002
Group practices
Medicare enrollment lists Matthew T. Harrington as a member of this group (CMS data updated 2026-10-02).
- Exer Medical Corporation340 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Costa Mesa
Clinicians with the same Medicare primary specialty in Costa Mesa, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376097519 |
| 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