Quick answers
- Does Marissa S. Stevens accept Medicare assignment?
- Yes. Medicare's clinician data says Marissa S. Stevens 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 Marissa S. Stevens's NPI number?
- 1104461151. 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 Marissa S. Stevens is enrolled with Medicare (CMS data updated October 2, 2026).
- 24 Pennacook StManchester, NH 03104 (603) 669‑7321
- 443 Congress St, Fl 2Portland, ME 04101 (207) 797‑8881
Group practices
Medicare enrollment lists Marissa S. Stevens as a member of this group (CMS data updated October 2, 2026).
- Planned Parenthood of Northern New England, Inc41 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Manchester
Clinicians with the same Medicare primary specialty in Manchester, NH — not a recommendation.
Other clinicians in Planned Parenthood of Northern New England, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104461151 |
| 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