Quick answers
- Which hospitals does Katherine I. Warner work at?
- Medicare's official clinician data lists Katherine I. Warner at 2 hospitals: Mercy Health St Ritas Medical Center and Wentworth-Douglass Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Katherine I. Warner see patients?
- Medicare's clinician data lists 2 practice locations, including Dover, NH and Lima, OH. Call before your visit to confirm the address.
- What is Katherine I. Warner's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does Katherine I. Warner accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine I. Warner 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 Katherine I. Warner?
- (603) 609-6685, as listed in official Medicare / NPI Registry data.
- What is Katherine I. Warner's NPI number?
- 1003137506. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Katherine I. Warner works
Medicare's Facility Affiliation Data lists Katherine I. Warner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Health St Ritas Medical CenterLima, OH · Acute Care Hospital · CCN 360066
- Wentworth-Douglass HospitalDover, NH · Acute Care Hospital · CCN 300018
Practice locations
Addresses where Katherine I. Warner is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Members Way, 301 Whp Vascular SurgeryDover, NH 03820 (603) 609‑6685
- 830 W High St, Suite 207Lima, OH 45801 (419) 226‑9182
Group practices
Medicare enrollment lists Katherine I. Warner as a member of these groups (CMS data updated 2026-10-02).
- Wentworth Douglass Physician Corporation429 clinicians in the group
- Mercy Health Physicians Lima Specialty Care LLC253 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Dover
Clinicians with the same Medicare primary specialty in Dover, NH — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003137506 |
| 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