Quick answers
- Which hospitals does Cassandra E. Mullen work at?
- Medicare's official clinician data lists Cassandra E. Mullen at 3 hospitals: Providence Milwaukie Hospital, Providence Portland Medical Center and Providence Willamette Falls Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Cassandra E. Mullen see patients?
- Medicare's clinician data lists 1 practice location in Portland, OR. Call before your visit to confirm the address.
- What is Cassandra E. Mullen's specialty?
- Medicare lists Sleep Medicine as the primary specialty.
- Does Cassandra E. Mullen accept Medicare assignment?
- Yes. Medicare's clinician data says Cassandra E. Mullen 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 Cassandra E. Mullen offer telehealth?
- Medicare's clinician data says Cassandra E. Mullen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Cassandra E. Mullen?
- (503) 963-3030, as listed in official Medicare / NPI Registry data.
- What is Cassandra E. Mullen's NPI number?
- 1710481056. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cassandra E. Mullen works
Medicare's Facility Affiliation Data lists Cassandra E. Mullen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Milwaukie HospitalMilwaukie, OR · Acute Care Hospital · CCN 380082
- Providence Portland Medical CenterPortland, OR · Acute Care Hospital · CCN 380061
- Providence Willamette Falls Medical CenterOregon City, OR · Acute Care Hospital · CCN 380038
Practice locations
Addresses where Cassandra E. Mullen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1111 NE 99th Ave, Suite 200Portland, OR 97220 (503) 963‑3030
Group practices
Medicare enrollment lists Cassandra E. Mullen as a member of this group (CMS data updated 2026-10-02).
- The Oregon Clinic, PC362 clinicians in the group
Specialties
- Sleep Medicineprimary
Other sleep medicine doctors in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1710481056 |
| 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