William KoeckMD
Orthopaedic Surgery, Pediatric Orthopaedic Surgery
2027 Medicare Advantage
Check your plan
Medicare Advantage plans for Bexar 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 91 Medicare Advantage plans we show for Bexar County, TX in 2027
- 15 list William
- 76 not listed

UnitedHealthcare
12 plans list William.
AARP Medicare Advantage Essentials from UHC TX-21 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1434 E Sonterra Blvd, Ste 300, San Antonio, TX, 78258
- 15900 La Cantera Pkwy, Ste 19240, San Antonio, TX, 78256
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Extras from UHC TX-28 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1434 E Sonterra Blvd, Ste 300, San Antonio, TX, 78258
- 15900 La Cantera Pkwy, Ste 19240, San Antonio, TX, 78256
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Giveback from UHC TX-40 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1434 E Sonterra Blvd, Ste 300, San Antonio, TX, 78258
- 15900 La Cantera Pkwy, Ste 19240, San Antonio, TX, 78256
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Patriot No Rx TX-MA03 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1434 E Sonterra Blvd, Ste 300, San Antonio, TX, 78258
- 15900 La Cantera Pkwy, Ste 19240, San Antonio, TX, 78256
This result applies to these offices. Other locations are not confirmed.
$0a month

Wellcare
2 plans list William; not listed on 4 other plans.
Wellcare Patriot Simple (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 333 N Santa Rosa, San Antonio, TX, 78207
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:
- 333 N Santa Rosa, San Antonio, TX, 78207
This result applies to these offices. Other locations are not confirmed.
$0a month

Molina Healthcare of Texas, Inc.
1 plan lists William.
Molina Medicare Complete Care Plus (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 333 N Santa Rosa, San Antonio, TX, 78207
This result applies to these offices. Other locations are not confirmed.
$6.30a month

Aetna Medicare
Not listed on its 11 plans here. That isn't proof they're out of network.

Alignment Health Plan
Not listed on its 6 plans here. That isn't proof they're out of network.

Clover Health
Not listed on its 2 plans here. That isn't proof they're out of network.

Community First
Not listed on its 2 plans here. That isn't proof they're out of network.

Devoted
Not listed on its 10 plans here. That isn't proof they're out of network.

HealthSpring
Not listed on its 6 plans here. That isn't proof they're out of network.

Humana
Not listed on its 22 plans here. That isn't proof they're out of network.

SCAN Health Plan
Not listed on its 4 plans here. That isn't proof they're out of network.

Wellpoint
Not listed on its 9 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 William 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
- 2008
- Registry record updated
- Jan 19, 2011
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list William Koeck?
In Bexar County, TX, 15 Medicare Advantage plans for 2027 list William in provider data from Medicare.gov or the carrier, including AARP Medicare Advantage Essentials from UHC TX-21 (HMO-POS), AARP Medicare Advantage Extras from UHC TX-28 (HMO-POS) and AARP Medicare Advantage Giveback from UHC TX-40 (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 William Koeck take UnitedHealthcare Medicare Advantage plans?
Medicare.gov provider data lists William on 12 Medicare Advantage plans for 2027 in Bexar County, TX, including AARP Medicare Advantage Essentials from UHC TX-21 (HMO-POS) and AARP Medicare Advantage Extras from UHC TX-28 (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 William Koeck take Wellcare Medicare Advantage plans?
Medicare.gov provider data lists William on 2 Medicare Advantage plans for 2027 in Bexar County, TX, including Wellcare Patriot Simple (HMO) and Wellcare Superior HealthPlan Dual Reserve Value (HMO D-SNP). 4 other plans did not return a listing in the search area. CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Wellcare before you enroll.
Does William Koeck take Molina Healthcare of Texas, Inc. Medicare Advantage plans?
Medicare.gov provider data lists William on one Medicare Advantage plan for 2027 in Bexar County, TX: Molina Medicare Complete Care Plus (HMO D-SNP). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Molina Healthcare of Texas, Inc. before you enroll.
Where does William Koeck practice?
18626 Hardy Oak Blvd, Suite 320, San Antonio, TX 78258.
How do I confirm William is in my plan's network?
Call the member services number on your plan card and give them the NPI 1982878195, 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 William Koeck on 72 plans from Aetna Medicare, Alignment Health Plan, Clover Health, Community First, Devoted, HealthSpring, Humana, SCAN Health Plan and Wellpoint in Bexar 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.