KAREN M. THOMSON MD
NPI 1447340997
Anesthesiology in Iowa City, IA
About Karen M. Thomson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN M. THOMSON MD (NPI 1447340997) is an individual anesthesiology provider in Iowa City, Iowa, licensed in Wisconsin (13571-320) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Texas A & M University System, Hsc, College Of Medicine (1999).
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
Karen M. Thomson 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
3Medicare enrollment records show Karen Thomson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Monroe, LA 71292
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 1,417 clinicians in this Medicare group
Houston, TX 77042
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: U S Anesthesia Partners Of Texas, PA
- 3,804 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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IOWA CITY, IA 52242
IOWA CITY, IA 52242
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 Karen Thomson's NPI number?
The NPI number for Karen Thomson is 1447340997. It was assigned to this individual provider in the NPPES registry on October 13, 2006.
Where is Karen Thomson located?
Karen Thomson practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 356-2320.
What is Karen Thomson's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Karen Thomson enrolled in Medicare?
Yes. Karen Thomson 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 Karen Thomson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Thomson reassigns Medicare benefits to 3 organizations: Ochsner Clinic LLC (West Monroe, LA), Children's Hospital (Washington, DC) and U. S. Anesthesia Partners Of Texas, P.A., (Houston, TX). 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 Karen Thomson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Thomson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Blue Cross and Blue Shield of Texas and 2 other insurers list Karen Thomson 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.
When was this NPI record last updated?
The NPPES record for Karen Thomson was last updated on March 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Karen M. Thomson, MD · NPI 1447340997
Anesthesiology physician in Iowa City, Iowa. Individual provider, active in the CMS NPPES registry since October 13, 2006.
## Identity
- **NPI:** 1447340997 (Entity type: Individual)
- **Enumerated:** October 13, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 13571-320 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 200 HAWKINS DR, Iowa City, IA 52242-1009
- **Phone:** (319) 356-2320 · **Fax:** (319) 384-6265
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Ochsner Clinic LLC (NPI 1932598695, West Monroe, LA); Children's Hospital (NPI 1780800128, Washington, DC); U. S. Anesthesia Partners Of Texas, P.A., (NPI 1548208564, Houston, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Texas A & M University System, Hsc, College Of Medicine, class of 1999
## Record status
- **NPPES last updated:** March 30, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1447340997) · Data from the CMS NPPES public registry.