Douglas DuffyMD
Internal Medicine, Nephrology
2027 Medicare Advantage
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Medicare Advantage plans for Wood County, WI and Cass County, ND.
Use the name or plan ID on your member card, or choose your insurance company.
Directory results See what each insurance company reports
Listed on 1 plan so far
Some of Group Health Cooperative of Eau Claire, Aetna Medicare, Align powered by Sanford Health Plan, Anthem Blue Cross and Blue Shield, Humana, Medica, Network Health Medicare Advantage Plans, Security Health Plan of Wisconsin, Inc., UnitedHealthcare and Wellcare's 2027 plans in Wood County, WI and Cass County, ND haven't been checked yet.
The 39 Medicare Advantage plans we show for Wood County, WI and Cass County, ND in 2027
- 1 lists Douglas
- 16 not listed
- 22 not checked yet
Group Health Cooperative of Eau Claire
1 plan lists Douglas; not listed on 1 other plan.
Cooperative Advantage (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1000 N Oak Ave, Marshfield, WI, 54449
This result applies to these offices. Other locations are not confirmed.
$0a month
Aetna Medicare
Not checked yet.
Align powered by Sanford Health Plan
Not checked yet.
Anthem Blue Cross and Blue Shield
Not listed on its 2 plans here. That isn't proof they're out of network.
Humana
Medicare.gov doesn't have provider data for these plans yet. We'll check again.
Medica
Not checked yet.
Network Health Medicare Advantage Plans
Medicare.gov doesn't have provider data for these plans yet. We'll check again.
Security Health Plan of Wisconsin, Inc.
Not listed on its 5 plans here. That isn't proof they're out of network.
UnitedHealthcare
Not checked yet.
5 more UnitedHealthcare plans haven't been checked yet.
Wellcare
Not listed on its 2 plans here. That isn't proof they're out of network.
Premiums are each plan's own monthly premium, as filed with Medicare. You keep paying your Medicare Part B premium.
Can't find your plan?Tell us the plan you have, and a licensed Silverpath advisor will check whether Douglas takes it. Free.
Original Medicare
Original Medicare status
Most Medicare Supplement (Medigap) policies have no provider network: they help pay Original Medicare's cost sharing where Medicare is accepted. Medicare SELECT policies can require network providers for full benefits. Ask the office whether they accept Medicare.
Medicare enrollment and assignment have not been verified here. Advantage directory results do not answer this question.
No opt-out record in this CMS file. CMS's file covers data through 2026-08-31. This does not establish Medicare enrollment, assignment, or whether the office accepts new Medicare patients.
CMS opt-out source · Data through 2026-08-31 · Reviewed Oct 25, 2026
Where they practice
2 practice locations
- NPI issued
- 2006
- Registry record updated
- Aug 1, 2018
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Douglas Duffy?
In Wood County, WI and Cass County, ND, 1 Medicare Advantage plan for 2027 lists Douglas in provider data from Medicare.gov or the carrier, including Cooperative Advantage (HMO D-SNP). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Networks can change during the year, so confirm with the office or the plan before you enroll.
Where does Douglas Duffy practice?
2 locations, including 1000 N Oak Ave, Marshfield, WI. All of them are listed on this page.
How do I confirm Douglas is in my plan's network?
Call the member services number on your plan card and give them the NPI 1366542227, or ask a Silverpath advisor to check for you. It's free.
For providers
Is this your practice?
Patients can use Silverpath to find practices and check plan networks in Wood County, WI and Cass County, ND. Tell us which plans you take, or want to take, and we'll keep this page accurate and talk with you about reaching more Medicare patients and carriers.