Quick answers
- Which hospitals does Charles I. Knoll work at?
- Medicare's official clinician data lists Charles I. Knoll at 1 hospital: Providence St Joseph Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Charles I. Knoll see patients?
- Medicare's clinician data lists 1 practice location in Eureka, CA. Call before your visit to confirm the address.
- What is Charles I. Knoll's specialty?
- Medicare lists Physical Medicine and Rehabilitation as the primary specialty.
- Does Charles I. Knoll accept Medicare assignment?
- Yes. Medicare's clinician data says Charles I. Knoll 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 Charles I. Knoll?
- (707) 445-8121, as listed in official Medicare / NPI Registry data.
- What is Charles I. Knoll's NPI number?
- 1962443945. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Charles I. Knoll works
Medicare's Facility Affiliation Data lists Charles I. Knoll at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence St Joseph HospitalEureka, CA · Acute Care Hospital · CCN 050006
Practice locations
Addresses where Charles I. Knoll is enrolled with Medicare (CMS data updated 2026-10-02).
- 2700 Dolbeer StEureka, CA 95501 (707) 445‑8121
Group practices
Medicare enrollment lists Charles I. Knoll as a member of this group (CMS data updated 2026-10-02).
- Providence Medical Foundation1,466 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in California →
Other rehabilitation doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Virginia Commonwealth University, School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962443945 |
| 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