Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Hematology/Oncology

Cynthia B. Aller, DO

Works at hospitals in Aberdeen, WA · Centralia, WA · Olympia, WA · Washington

Summary

Cynthia B. Aller, DO (Hematology/Oncology) is listed by Medicare at 3 hospitals in Aberdeen, WA, Centralia, WA and Olympia, WA. NPI 1194906016. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Cynthia B. Aller, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
21Years since medical school (graduated 2005)
Midwestern University, Chicago College Of Osteopathic MedMedical school
FemaleGender (as listed)
Providence Health and Services WashingtonGroup practice

Quick answers

Which hospitals does Cynthia B. Aller work at?
Medicare's official clinician data lists Cynthia B. Aller at 3 hospitals: Grays Harbor Community Hospital, Providence Centralia Hospital and Providence St Peter Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Cynthia B. Aller see patients?
Medicare's clinician data lists 2 practice locations, including Olympia, WA. Call before your visit to confirm the address.
What is Cynthia B. Aller's specialty?
Medicare lists Hematology/Oncology as the primary specialty.
Does Cynthia B. Aller accept Medicare assignment?
Yes. Medicare's clinician data says Cynthia B. Aller 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 Cynthia B. Aller?
(360) 493-4083, as listed in official Medicare / NPI Registry data.
What is Cynthia B. Aller's NPI number?
1194906016. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Cynthia B. Aller works

Medicare's Facility Affiliation Data lists Cynthia B. Aller at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Cynthia B. Aller is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Cynthia B. Aller as a member of this group (CMS data updated 2026-10-02).

  • Providence Health and Services Washington475 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Washington →

Other hematologist-oncologists in Olympia

Clinicians with the same Medicare primary specialty in Olympia, WA — not a recommendation.

All hematologist-oncologists in Olympia →

Clinician information

CredentialDO
Medical schoolMidwestern University, Chicago College Of Osteopathic Med
Graduation year2005
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1194906016
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians