Tres BarreraMD
Internal Medicine, Endocrinology, Diabetes & Metabolism
2027 Medicare Advantage
Check your plan
Medicare Advantage plans for Williamson County, TX.
Use the name or plan ID on your member card, or choose your insurance company.
Directory results See what each insurance company reports
The 57 Medicare Advantage plans we show for Williamson County, TX in 2027
- 27 list Tres
- 30 not listed
UnitedHealthcare
13 plans list Tres.
AARP Medicare Advantage CareFlex from UHC TX-47 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Essentials from UHC TX-12 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Extras from UHC TX-53 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Patriot No Rx TX-MA01 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a month
Baylor Scott & White Health Plan
8 plans list Tres.
BSW SeniorCare Advantage Preferred (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthBSW SeniorCare Advantage Premium (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthBSW SeniorCare Advantage Select (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthBSW SeniorCare Advantage Select Rx (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 2600 E Pflugerville Pkwy, Ste 100, Pflugerville, TX, 78660
- 2600 E Pflugerville Pkwy, Ste 200, Pflugerville, TX, 78660
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a month
Aetna Medicare
3 plans list Tres.
Aetna Medicare Eagle (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Signature Extra (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Full Dual (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
- 4945 Williams Dr, Georgetown, TX, 78633
This result applies to these offices. Other locations are not confirmed.
$0a month
Wellcare
3 plans list Tres.
Wellcare Simple Value (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Superior HealthPlan Dual Liberty Sync (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Superior HealthPlan Dual Reserve Value (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 425 University Blvd, Round Rock, TX, 78665
This result applies to these offices. Other locations are not confirmed.
$0a month
Devoted
Not listed on its 10 plans here. That isn't proof they're out of network.
Humana
Not listed on its 15 plans here. That isn't proof they're out of network.
Wellpoint
Not listed on its 5 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 Tres 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
- 2007
- Registry record updated
- Dec 7, 2021
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Tres Barrera?
In Williamson County, TX, 27 Medicare Advantage plans for 2027 list Tres in provider data from Medicare.gov or the carrier, including AARP Medicare Advantage CareFlex from UHC TX-47 (HMO-POS), AARP Medicare Advantage Essentials from UHC TX-12 (HMO-POS) and AARP Medicare Advantage Extras from UHC TX-53 (HMO-POS). 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 Tres Barrera take UnitedHealthcare Medicare Advantage plans?
Medicare.gov provider data lists Tres on 13 Medicare Advantage plans for 2027 in Williamson County, TX, including AARP Medicare Advantage CareFlex from UHC TX-47 (HMO-POS) and AARP Medicare Advantage Essentials from UHC TX-12 (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 Tres Barrera take Baylor Scott & White Health Plan Medicare Advantage plans?
Medicare.gov provider data lists Tres on 8 Medicare Advantage plans for 2027 in Williamson County, TX, including BSW SeniorCare Advantage Preferred (HMO-POS) and BSW SeniorCare Advantage Premium (HMO-POS). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Baylor Scott & White Health Plan before you enroll.
Does Tres Barrera take Aetna Medicare Medicare Advantage plans?
Medicare.gov provider data lists Tres on 3 Medicare Advantage plans for 2027 in Williamson County, TX, including Aetna Medicare Eagle (PPO) and Aetna Medicare Signature Extra (HMO). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Aetna Medicare before you enroll.
Where does Tres Barrera practice?
425 University Blvd, Round Rock, TX 78665.
How do I confirm Tres is in my plan's network?
Call the member services number on your plan card and give them the NPI 1942356522, 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 Tres Barrera on 30 plans from Devoted, Humana and Wellpoint in Williamson County, TX. 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.