KATHERINE IRENE WARNER DO
NPI 1003137506
Surgery - Vascular Surgery in Lima, OH
About Katherine Irene Warner Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE IRENE WARNER DO (NPI 1003137506) is an individual vascular surgery provider in Lima, Ohio, licensed in Ohio (34C.000588) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with Wentworth-douglass Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Katherine Irene Warner Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Katherine Warner reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lima, OH 45801
- Reassigned Medicare billing, Ohio enrollment
- 439 clinicians in this Medicare group
Mason, MI 48854
- Reassigned Medicare billing, Michigan enrollment
- 916 clinicians in this Medicare group
Dover, NH 03820
- Reassigned Medicare billing, New Hampshire enrollment
- 559 clinicians in this Medicare group
Wray, CO 80758
- Reassigned Medicare billing, Colorado enrollment
- 324 clinicians in this Medicare group
Spokane Valley, WA 99037
- Reassigned Medicare billing, Washington enrollment
- 4,383 clinicians in this Medicare group
Sammamish, WA 98074
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: King County Public Hospital District No 2
- 1,074 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wentworth-Douglass Hospital
Acute Care Hospitals · Dover, NHMercy Health-St Rita's Medical Center
Acute Care Hospitals · Lima, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LIMA, OH 45801
LIMA, OH 45801
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Katherine Warner's NPI number?
The NPI number for Katherine Warner is 1003137506. It was assigned to this individual provider in the NPPES registry on June 18, 2010.
Where is Katherine Warner located?
Katherine Warner practices at 830 W High St Ste 207, Lima, OH 45801. The listed phone number is (419) 226-9182.
What is Katherine Warner's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Katherine Warner enrolled in Medicare?
Yes. Katherine Warner is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Katherine Warner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Warner reassigns Medicare benefits to 6 organizations: Mercy Health Physicians Lima Specialty Care LLC (Lima, OH), Edward W. Sparrow Hospital Association (Mason, MI), Wentworth Douglass Physician Corporation (Dover, NH), Banner Health Physicians Colorado LLC (Wray, CO), Multicare Health System (Spokane Valley, WA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Warner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Warner accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, MedMutual, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan and 3 other insurers list Katherine Warner as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Katherine Warner affiliated with any hospitals?
According to CMS data, Katherine Warner is affiliated with Wentworth-Douglass Hospital and Mercy Health-St Rita's Medical Center.
When was this NPI record last updated?
The NPPES record for Katherine Warner was last updated on February 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Katherine Irene Warner, DO · NPI 1003137506
Vascular Surgery physician in Lima, Ohio. Individual provider, active in the CMS NPPES registry since June 18, 2010.
## Identity
- **NPI:** 1003137506 (Entity type: Individual)
- **Enumerated:** June 18, 2010
- **Primary specialty:** Surgery - Vascular Surgery · taxonomy 2086S0129X
- **State license:** 34C.000588 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 830 W HIGH ST STE 207, Lima, OH 45801-3975
- **Phone:** (419) 226-9182
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Mercy Health Physicians Lima Specialty Care LLC (NPI 1518589803, Lima, OH); Edward W. Sparrow Hospital Association (NPI 1689683641, Mason, MI); Wentworth Douglass Physician Corporation (NPI 1336751825, Dover, NH); Banner Health Physicians Colorado LLC (NPI 1306185699, Wray, CO); Multicare Health System (NPI 1336902345, Spokane Valley, WA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Kansas City University Of Med & Biosciences, College Of Osteo Med, class of 2010
## Record status
- **NPPES last updated:** February 25, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1003137506) · Data from the CMS NPPES public registry.