Quick answers
- Which hospitals does Mark P. Cahill work at?
- Medicare's official clinician data lists Mark P. Cahill at 5 hospitals: Legacy Meridian Park Medical Center, Providence Milwaukie Hospital, Providence Newberg Medical Center, Providence St Vincent Medical Center and Providence Willamette Falls Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark P. Cahill see patients?
- Medicare's clinician data lists 2 practice locations, including Oregon City, OR and Tualatin, OR. Call before your visit to confirm the address.
- What is Mark P. Cahill's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Gastroenterology.
- Does Mark P. Cahill accept Medicare assignment?
- Yes. Medicare's clinician data says Mark P. Cahill 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 Mark P. Cahill offer telehealth?
- Medicare's clinician data says Mark P. Cahill offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark P. Cahill?
- (503) 692-3750, as listed in official Medicare / NPI Registry data.
- What is Mark P. Cahill's NPI number?
- 1598957888. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark P. Cahill works
Medicare's Facility Affiliation Data lists Mark P. Cahill at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Legacy Meridian Park Medical CenterTualatin, OR · Acute Care Hospital · CCN 380089
- Providence Milwaukie HospitalMilwaukie, OR · Acute Care Hospital · CCN 380082
- Providence Newberg Medical CenterNewberg, OR · Acute Care Hospital · CCN 380037
- Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · CCN 380004
- Providence Willamette Falls Medical CenterOregon City, OR · Acute Care Hospital · CCN 380038
Practice locations
Addresses where Mark P. Cahill is enrolled with Medicare (CMS data updated 2026-10-02).
- 1508 Division St, Suite 15Oregon City, OR 97045 (503) 692‑3750
- 19250 SW 90th AveTualatin, OR 97062 (503) 692‑3750
Group practices
Medicare enrollment lists Mark P. Cahill as a member of this group (CMS data updated 2026-10-02).
- The Oregon Clinic, PC362 clinicians in the group
Specialties
- Internal Medicineprimary
- Gastroenterologyalso
Other internal medicine doctors in Oregon City
Clinicians with the same Medicare primary specialty in Oregon City, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1598957888 |
| 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