Gregory GrenierDO
Orthopaedic Surgery
2027 Medicare Advantage
Check your plan
Medicare Advantage plans for Yellowstone County, MT and La Plata County, CO.
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 UnitedHealthcare, Aetna Medicare, HealthSpring, Humana and Range Health's 2027 plans in Yellowstone County, MT and La Plata County, CO haven't been checked yet.
The 31 Medicare Advantage plans we show for Yellowstone County, MT and La Plata County, CO in 2027
- 1 lists Gregory
- 15 not listed
- 15 not checked yet
UnitedHealthcare
1 plan lists Gregory.
UHC Dual Complete MT-S001 (PPO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Mercado St, Ste 202, Durango, CO, 81301
This result applies to these offices. Other locations are not confirmed.
$24.60a month
2 more UnitedHealthcare plans haven't been checked yet.
Aetna Medicare
Not checked yet.
HealthSpring
Not checked yet.
Humana
Not checked yet.
3 more Humana plans haven't been checked yet.
Range Health
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 Gregory 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
- 2015
- Registry record updated
- Jan 6, 2023
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Gregory Grenier?
In Yellowstone County, MT and La Plata County, CO, 1 Medicare Advantage plan for 2027 lists Gregory in provider data from Medicare.gov or the carrier, including UHC Dual Complete MT-S001 (PPO 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 Gregory Grenier practice?
2 locations, including 2900 12th Ave N Ste 140w, Billings, MT. All of them are listed on this page.
How do I confirm Gregory is in my plan's network?
Call the member services number on your plan card and give them the NPI 1134512593, 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 Yellowstone County, MT and La Plata County, CO. 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.