Quick answers
- Which hospitals does Helen Ryan work at?
- Medicare's official clinician data lists Helen Ryan at 2 hospitals: Brigham and Women's Hospital and Central Maine Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Helen Ryan see patients?
- Medicare's clinician data lists 5 practice locations, including Topsham, ME, Lewiston, ME and Kennebunk, ME. Call before your visit to confirm the address.
- What is Helen Ryan's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Helen Ryan accept Medicare assignment?
- Yes. Medicare's clinician data says Helen Ryan 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 the phone number for Helen Ryan?
- (207) 303-3300, as listed in official Medicare / NPI Registry data.
- What is Helen Ryan's NPI number?
- 1477575793. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Helen Ryan works
Medicare's Facility Affiliation Data lists Helen Ryan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · CCN 220110
- Central Maine Medical CenterLewiston, ME · Acute Care Hospital · CCN 200024
Practice locations
Addresses where Helen Ryan is enrolled with Medicare (CMS data updated 2026-10-02).
- 105 Topsham Fair Mall Rd, Unit 1Topsham, ME 04086 (207) 303‑3300
- 17 High StLewiston, ME 04240
- 2 Independence DrKennebunk, ME 04043 (207) 303‑3300
- 300 Main StLewiston, ME 04240
- 450 Brookline AveBoston, MA 02215
Group practices
Medicare enrollment lists Helen Ryan as a member of these groups (CMS data updated 2026-10-02).
- Dana-Farber Cancer Institute, Inc.684 clinicians in the group
- Central Maine Medical Center342 clinicians in the group
- Maine Center for Cancer Medicine and Blood Disorders PA70 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Topsham
Clinicians with the same Medicare primary specialty in Topsham, ME — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477575793 |
| 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