Quick answers
- Where does Sandra S. Marien see patients?
- Medicare's clinician data lists 2 practice locations, including Acton, MA and Concord, MA. Call before your visit to confirm the address.
- What is Sandra S. Marien's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Sandra S. Marien accept Medicare assignment?
- Yes. Medicare's clinician data says Sandra S. Marien 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 Sandra S. Marien offer telehealth?
- Medicare's clinician data says Sandra S. Marien offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Sandra S. Marien?
- (978) 514-0747, as listed in official Medicare / NPI Registry data.
- What is Sandra S. Marien's NPI number?
- 1467005058. 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 Sandra S. Marien is enrolled with Medicare (CMS data updated 2026-10-02).
- 525 Massachusetts Ave, Suite 101Acton, MA 01720 (978) 514‑0747
- 9 Pond Ln, Suite 3a1Concord, MA 01742 (978) 254‑2200
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Acton
Clinicians with the same Medicare primary specialty in Acton, MA — not a recommendation.
Clinician information
| Graduation year | 2019 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1467005058 |
| 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