Quick answers
- Which hospitals does Marzena Gryczewski work at?
- Medicare's official clinician data lists Marzena Gryczewski at 1 hospital: Hartford Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marzena Gryczewski see patients?
- Medicare's clinician data lists 1 practice location in Hartford, CT. Call before your visit to confirm the address.
- What is Marzena Gryczewski's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Marzena Gryczewski accept Medicare assignment?
- Yes. Medicare's clinician data says Marzena Gryczewski 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 Marzena Gryczewski's NPI number?
- 1548500663. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marzena Gryczewski works
Medicare's Facility Affiliation Data lists Marzena Gryczewski at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hartford HospitalHartford, CT · Acute Care Hospital · CCN 070025
Practice locations
Addresses where Marzena Gryczewski is enrolled with Medicare (CMS data updated 2026-10-02).
- 80 Seymour StHartford, CT 06102
Group practices
Medicare enrollment lists Marzena Gryczewski as a member of this group (CMS data updated 2026-10-02).
- Hartford Hospital1,044 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Hartford
Clinicians with the same Medicare primary specialty in Hartford, CT — not a recommendation.
Clinician information
| Graduation year | 2011 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548500663 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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