Mark LierzMD
Urology
2027 Medicare Advantage
Check your plan
Medicare Advantage plans for Buchanan County, MO.
Use the name or plan ID on your member card, or choose your insurance company.
Directory results See what each insurance company reports
The 19 Medicare Advantage plans we show for Buchanan County, MO in 2027
- 12 list Mark
- 7 not listed

UnitedHealthcare
12 plans list Mark.
AARP Medicare Advantage Essentials from UHC KC-6 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 901 Heartland Rd, Ste 1800, Saint Joseph, MO, 64506
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Extras from UHC KC-2 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 901 Heartland Rd, Ste 1800, Saint Joseph, MO, 64506
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage from UHC KC-4 (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 901 Heartland Rd, Ste 1800, Saint Joseph, MO, 64506
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Patriot No Rx KS-MA01 (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 901 Heartland Rd, Ste 1800, Saint Joseph, MO, 64506
This result applies to these offices. Other locations are not confirmed.
$0a month

Aetna Medicare
Not listed on its 5 plans here. That isn't proof they're out of network.

Humana
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 Mark 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
Practice location
- NPI issued
- 2006
- Registry record updated
- Jun 4, 2025
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Mark Lierz?
In Buchanan County, MO, 12 Medicare Advantage plans for 2027 list Mark in provider data from Medicare.gov or the carrier, including AARP Medicare Advantage Essentials from UHC KC-6 (HMO-POS), AARP Medicare Advantage Extras from UHC KC-2 (HMO-POS) and AARP Medicare Advantage from UHC KC-4 (PPO). 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.
Does Mark Lierz take UnitedHealthcare Medicare Advantage plans?
Medicare.gov provider data lists Mark on 12 Medicare Advantage plans for 2027 in Buchanan County, MO, including AARP Medicare Advantage Essentials from UHC KC-6 (HMO-POS) and AARP Medicare Advantage Extras from UHC KC-2 (HMO-POS). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or UnitedHealthcare before you enroll.
Does Mark Lierz take Aetna Medicare Medicare Advantage plans?
The provider searches didn't return a listing for Mark on these 5 plans for 2027 in Buchanan County, MO. Directories can lag, and a clinician can be in network at another office, so that isn't proof Mark is out of network. Ask the office or a Silverpath advisor to confirm.
Does Mark Lierz take Humana Medicare Advantage plans?
Humana's own provider directory doesn't list Mark on any of its 2 plans for 2027 in Buchanan County, MO. Directories can lag, and a clinician can be in network at another office, so that isn't proof Mark is out of network. Ask the office or a Silverpath advisor to confirm.
Where does Mark Lierz practice?
901 Heartland Rd, Suite 1800, Saint Joseph, MO 64506.
How do I confirm Mark is in my plan's network?
Call the member services number on your plan card and give them the NPI 1497856702, or ask a Silverpath advisor to check for you. It's free.
For providers
Is this your practice?
What patients see here today:
- Provider searches did not return a listing for Mark Lierz on 7 plans from Aetna Medicare and Humana in Buchanan County, MO. Other offices are not confirmed; this isn't proof the practice is out of network.
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.