Quick answers
- Which hospitals does Thomas C. Rittman work at?
- Medicare's official clinician data lists Thomas C. Rittman at 1 hospital: Providence St Vincent Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas C. Rittman see patients?
- Medicare's clinician data lists 2 practice locations, including Tigard, OR and Portland, OR. Call before your visit to confirm the address.
- What is Thomas C. Rittman's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Thomas C. Rittman accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas C. Rittman 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 Thomas C. Rittman?
- (503) 216-9200, as listed in official Medicare / NPI Registry data.
- What is Thomas C. Rittman's NPI number?
- 1235392473. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas C. Rittman works
Medicare's Facility Affiliation Data lists Thomas C. Rittman 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 Thomas C. Rittman is enrolled with Medicare (CMS data updated 2026-10-02).
- 12442 SW Scholls Ferry Rd, Suite 206Tigard, OR 97223 (503) 216‑9200
- 15640 NW Laidlaw Rd, Suite 102Portland, OR 97229 (503) 764‑0100
Group practices
Medicare enrollment lists Thomas C. Rittman as a member of this group (CMS data updated 2026-10-02).
- Providence Health and Services Oregon1,433 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Tigard
Clinicians with the same Medicare primary specialty in Tigard, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235392473 |
| 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