Quick answers
- Which hospitals does James W. Tinkelenberg work at?
- Medicare's official clinician data lists James W. Tinkelenberg at 4 hospitals: Mad River Community Hospital, Providence Redwood Memorial Hospital, Providence St Joseph Hospital and Trinity Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James W. Tinkelenberg see patients?
- Medicare's clinician data lists 3 practice locations, including Mad River, CA and Scotia, CA. Call before your visit to confirm the address.
- What is James W. Tinkelenberg's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does James W. Tinkelenberg accept Medicare assignment?
- Yes. Medicare's clinician data says James W. Tinkelenberg 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 James W. Tinkelenberg?
- (707) 764-5617, as listed in official Medicare / NPI Registry data.
- What is James W. Tinkelenberg's NPI number?
- 1205978392. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James W. Tinkelenberg works
Medicare's Facility Affiliation Data lists James W. Tinkelenberg at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mad River Community HospitalArcata, CA · Acute Care Hospital · CCN 050028
- Providence Redwood Memorial HospitalFortuna, CA · Critical Access Hospital · CCN 051318
- Providence St Joseph HospitalEureka, CA · Acute Care Hospital · CCN 050006
- Trinity HospitalWeaverville, CA · Critical Access Hospital · CCN 051315
Practice locations
Addresses where James W. Tinkelenberg is enrolled with Medicare (CMS data updated 2026-10-02).
- 321 Van Duzen RdMad River, CA 95526
- 500 B St AScotia, CA 95565 (707) 764‑5617
- PO Box, Suite 7Scotia, CA 95565
Group practices
Medicare enrollment lists James W. Tinkelenberg as a member of this group (CMS data updated 2026-10-02).
- The Wecare Group, Inc2 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205978392 |
| 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