Zachary HollidayMD
Internal Medicine, Critical Care Medicine
2027 Medicare Advantage
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Medicare Advantage plans for Boone County, MO and Johnson County, IA.
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 19 plans so far
Some of Aetna Medicare, Wellcare, Anthem HealthKeepers, Humana, Essence Healthcare, Molina Healthcare of Iowa, Inc. and UnitedHealthcare's 2027 plans in Boone County, MO and Johnson County, IA haven't been checked yet.
The 69 Medicare Advantage plans we show for Boone County, MO and Johnson County, IA in 2027
- 19 list Zachary
- 25 not listed
- 25 not checked yet

Aetna Medicare
12 plans list Zachary.
Aetna Medicare Eagle (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Elite (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Elite Classic (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Elite Classic Extra (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a month
9 more Aetna Medicare plans haven't been checked yet.

Wellcare
3 plans list Zachary; not listed on 3 other plans.
Wellcare Patriot Giveback Open (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Simple Open (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Home State Health Dual Access Open (PPO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
This result applies to these offices. Other locations are not confirmed.
$0a month
4 more Wellcare plans haven't been checked yet.

Anthem HealthKeepers · Wellpoint
2 plans list Zachary.
Anthem Full Dual Advantage (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
- 1020 Hitt St, Columbia, MO, 65212
- 404 N Keene St, Columbia, MO, 65201
- 1125 Madison St, Jefferson City, MO, 65101
This result applies to these offices. Other locations are not confirmed.
$0a monthAnthem Full Dual Advantage 2 (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 1 Hospital Dr, Columbia, MO, 65212
- 1020 Hitt St, Columbia, MO, 65212
- 404 N Keene St, Columbia, MO, 65201
- 1125 Madison St, Jefferson City, MO, 65101
This result applies to these offices. Other locations are not confirmed.
$0a month
1 more Anthem HealthKeepers plan hasn't been checked yet.

Humana
2 plans list Zachary; not listed on 13 other plans.
Humana Gold Choice H8145-126 (PFFS)
Source: Humana provider directory.
The source lists the clinician on this plan, but hasn't identified a covered office. Confirm your office before enrolling.
$0a monthHumana Gold Choice H8145-006 (PFFS)
Source: Humana provider directory.
The source lists the clinician on this plan, but hasn't identified a covered office. Confirm your office before enrolling.
$60a month
3 more Humana plans haven't been checked yet.

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

Molina Healthcare of Iowa, Inc.
Not checked yet.

UnitedHealthcare
Not checked yet.
7 more UnitedHealthcare plans haven't been checked yet.
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 Zachary 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
- 2012
- Registry record updated
- Apr 18, 2023
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Zachary Holliday?
In Boone County, MO and Johnson County, IA, 19 Medicare Advantage plans for 2027 list Zachary in provider data from Medicare.gov or the carrier, including Aetna Medicare Eagle (HMO-POS), Aetna Medicare Elite (PPO) and Aetna Medicare Elite Classic (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.
Where does Zachary Holliday practice?
2 locations, including 1020 Hitt St, Columbia, MO. All of them are listed on this page.
How do I confirm Zachary is in my plan's network?
Call the member services number on your plan card and give them the NPI 1306108790, 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 Boone County, MO and Johnson County, IA. 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.