DR. THOR M THORSSON M.D.
NPI 1649462425
Pediatrics - Pediatric Cardiology in Ann Arbor, MI
About Dr. Thor M Thorsson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOR M THORSSON M.D. (NPI 1649462425) is an individual pediatric cardiology provider in Ann Arbor, Michigan, licensed in Michigan (4301091651) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of Other (2002).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Thor M Thorsson M.d. 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 Thor Thorsson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 clinicians in this Medicare group
Hancock, MI 49930
- Reassigned Medicare billing, Michigan enrollment
- 38 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 2
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.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 Thor Thorsson's NPI number?
The NPI number for Thor Thorsson is 1649462425. It was assigned to this individual provider in the NPPES registry on August 15, 2007.
Where is Thor Thorsson located?
Thor Thorsson practices at 1500 E Medical Center Dr 11th Floor Cs Mott Childrens Hospital Room 661, Ann Arbor, MI 48109. The listed phone number is (734) 764-5176.
What is Thor Thorsson's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Thor Thorsson enrolled in Medicare?
Yes. Thor Thorsson 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 Thor Thorsson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thor Thorsson reassigns Medicare benefits to 2 organizations: Regents Of The University Of Michigan (Ann Arbor, MI) and Portage Hospital LLC (Hancock, MI). 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 Thor Thorsson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thor Thorsson accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Thor Thorsson 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 Thor Thorsson affiliated with any hospitals?
According to CMS data, Thor Thorsson is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Thor Thorsson was last updated on June 18, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.
# Dr. Thor M Thorsson, M.D. · NPI 1649462425
Pediatric Cardiology physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since August 15, 2007.
## Identity
- **NPI:** 1649462425 (Entity type: Individual)
- **Enumerated:** August 15, 2007
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** 4301091651 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, 11TH FLOOR CS MOTT CHILDRENS HOSPITAL ROOM 661, Ann Arbor, MI 48109-5000
- **Phone:** (734) 764-5176
## 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): Regents Of The University Of Michigan (NPI 1003848144, Ann Arbor, MI); Portage Hospital LLC (NPI 1245667229, Hancock, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** June 18, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1649462425) · Data from the CMS NPPES public registry.