Quick answers
- Which hospitals does Eleni Nackos work at?
- Medicare's official clinician data lists Eleni Nackos at 4 hospitals: MaineHealth Maine Medical Center, MaineHealth Mid Coast Hospital, MaineHealth Stephens Hospital and Northern Light Mercy Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Eleni Nackos see patients?
- Medicare's clinician data lists 2 practice locations, including Westbrook, ME and Portsmouth, NH. Call before your visit to confirm the address.
- What is Eleni Nackos's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does Eleni Nackos accept Medicare assignment?
- Yes. Medicare's clinician data says Eleni Nackos 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 Eleni Nackos offer telehealth?
- Medicare's clinician data says Eleni Nackos offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Eleni Nackos?
- (207) 303-3300, as listed in official Medicare / NPI Registry data.
- What is Eleni Nackos's NPI number?
- 1023339819. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Eleni Nackos works
Medicare's Facility Affiliation Data lists Eleni Nackos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MaineHealth Maine Medical CenterPortland, ME · Acute Care Hospital · CCN 200009
- MaineHealth Mid Coast HospitalBrunswick, ME · Acute Care Hospital · CCN 200021
- MaineHealth Stephens HospitalNorway, ME · Critical Access Hospital · CCN 201315
- Northern Light Mercy HospitalPortland, ME · Acute Care Hospital · CCN 200008
Practice locations
Addresses where Eleni Nackos is enrolled with Medicare (CMS data updated 2026-10-02).
- 11 Rock RowWestbrook, ME 04092 (207) 303‑3300
- 155 Borthwick Ave, Suite CPortsmouth, NH 03801 (603) 828‑0100
Group practices
Medicare enrollment lists Eleni Nackos as a member of this group (CMS data updated 2026-10-02).
- Maine Center for Cancer Medicine and Blood Disorders PA70 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Westbrook
Clinicians with the same Medicare primary specialty in Westbrook, ME — not a recommendation.
Clinician information
| Graduation year | 2010 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1023339819 |
| 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