KATHERINE TERESA RINGLER IVERSON MD
NPI 1407105968
Surgery - Surgical Critical Care in San Diego, CA
About Katherine Teresa Ringler Iverson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE TERESA RINGLER IVERSON MD (NPI 1407105968) is an individual surgical critical care provider in San Diego, California, licensed in California (A136855) and active in the NPI registry since August 2012. She is enrolled in Medicare PECOS, is affiliated with Froedtert Memorial Lutheran Hospital, and maintains a secondary practice location in La Jolla.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Secondary Practice Location 1
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 Teresa Ringler Iverson Md 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
2Medicare enrollment records show Katherine Iverson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 clinicians in this Medicare group
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Froedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
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 Iverson's NPI number?
The NPI number for Katherine Iverson is 1407105968. It was assigned to this individual provider in the NPPES registry on August 30, 2012. The provider is also known as Katherine Teresa Ringler.
Where is Katherine Iverson located?
Katherine Iverson practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Katherine Iverson's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Katherine Iverson enrolled in Medicare?
Yes. Katherine Iverson 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 Iverson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Iverson reassigns Medicare benefits to 2 organizations: Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI) and The Medical College Of Wisconsin, Inc. (Milwaukee, WI). 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 Iverson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Iverson accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan and Network Health list Katherine Iverson 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 Iverson affiliated with any hospitals?
According to CMS data, Katherine Iverson is affiliated with Froedtert Memorial Lutheran Hospital.
When was this NPI record last updated?
The NPPES record for Katherine Iverson was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days 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 Teresa Ringler Iverson, MD · NPI 1407105968
Surgical Critical Care physician in San Diego, California. Individual provider, active in the CMS NPPES registry since August 30, 2012.
## Identity
- **NPI:** 1407105968 (Entity type: Individual)
- **Enumerated:** August 30, 2012
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** A136855 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, San Diego, CA 92103-9000
- **Phone:** (800) 926-8273
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (NPI 1568787448, Menomonee Falls, WI); The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oregon Health Sciences University School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** October 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1407105968) · Data from the CMS NPPES public registry.