THOMAS DUEN-SHYR WANG MD
NPI 1831225648
Internal Medicine - Gastroenterology in Ann Arbor, MI
About Thomas Duen-shyr Wang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS DUEN-SHYR WANG MD (NPI 1831225648) is an individual gastroenterology provider in Ann Arbor, Michigan, licensed in Michigan (4301091009) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of Harvard Medical School (1998).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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
Thomas Duen-shyr Wang 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 Reassignment
Medicare enrollment records show Thomas Wang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 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.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48109 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 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 Thomas Wang's NPI number?
The NPI number for Thomas Wang is 1831225648. It was assigned to this individual provider in the NPPES registry on February 26, 2007.
Where is Thomas Wang located?
Thomas Wang practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is Thomas Wang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Thomas Wang enrolled in Medicare?
Yes. Thomas Wang 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 organization bills Medicare for Thomas Wang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Wang reassigns Medicare benefits to Regents Of The University Of Michigan (Ann Arbor, MI). The 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 Thomas Wang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Wang accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Thomas Wang 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 Thomas Wang affiliated with any hospitals?
According to CMS data, Thomas Wang is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Thomas Wang was last updated on June 26, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Thomas Duen-Shyr Wang, MD · NPI 1831225648
Gastroenterology physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since February 26, 2007.
## Identity
- **NPI:** 1831225648 (Entity type: Individual)
- **Enumerated:** February 26, 2007
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 4301091009 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## 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:** Regents Of The University Of Michigan (NPI 1003848144, Ann Arbor, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1998
## Record status
- **NPPES last updated:** June 26, 2019
- **Other identifiers:** Medicaid 00A725460 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1831225648) · Data from the CMS NPPES public registry.