Quick answers
- Does Christina Martineau accept Medicare assignment?
- Yes. Medicare's clinician data says Christina Martineau accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Christina Martineau's NPI number?
- 1891886156. 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 Christina Martineau is enrolled with Medicare (CMS data updated October 2, 2026).
- 20 E Elm StGreenwich, CT 06830
Specialties
- Physician Assistantprimary
Other physician assistants in Greenwich
Clinicians with the same Medicare primary specialty in Greenwich, CT — not a recommendation.
Clinician information
| Graduation year | 2006 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891886156 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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