Quick answers
- Which hospitals does Alison Y. Ma work at?
- Medicare's official clinician data lists Alison Y. Ma at 1 hospital: Providence St Vincent Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alison Y. Ma see patients?
- Medicare's clinician data lists 1 practice location in Clackamas, OR. Call before your visit to confirm the address.
- What is Alison Y. Ma's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Alison Y. Ma accept Medicare assignment?
- Yes. Medicare's clinician data says Alison Y. Ma 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 Alison Y. Ma?
- (503) 215-2110, as listed in official Medicare / NPI Registry data.
- What is Alison Y. Ma's NPI number?
- 1609083237. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alison Y. Ma works
Medicare's Facility Affiliation Data lists Alison Y. Ma at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · CCN 380004
Practice locations
Addresses where Alison Y. Ma is enrolled with Medicare (CMS data updated 2026-10-02).
- 9290 SE Sunnybrook Blvd, Suite 120Clackamas, OR 97015 (503) 215‑2110
Group practices
Medicare enrollment lists Alison Y. Ma as a member of this group (CMS data updated 2026-10-02).
- Providence Health and Services Oregon1,433 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Clackamas
Clinicians with the same Medicare primary specialty in Clackamas, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Oregon Health Sciences University School Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609083237 |
| 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