Tammy WinchellARNP
Nurse Practitioner, Pediatrics
2027 Medicare Advantage
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Medicare Advantage plans for Marin and Orange counties, CA.
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Directory results See what each insurance company reports
Listed on 2 plans so far
Some of Humana, Aetna Medicare, Align Senior Care, Alignment Health Plan, Anthem Blue Cross Partnership Plan, Astiva Health, Blue Shield of California, CalOptima Health OneCare, Champion Heath Plan, Clever Care Health Plan, Imperial Health Plan of California, Inc., Kaiser Permanente, SCAN Health Plan, UnitedHealthcare, VillageHealth and Wellcare's 2027 plans in Marin and Orange counties, CA haven't been checked yet.
The 116 Medicare Advantage plans we show for Marin and Orange counties, CA in 2027
- 2 list Tammy
- 19 not listed
- 95 not checked yet
Humana
2 plans list Tammy; not listed on 1 other plan.
Humana USAA Honor Giveback (PPO)
Source: Humana provider directory.
Listed offices for this plan:
- 501 N Graham St, Ste 585, Portland, OR, 97227
- 700 NE 87th Ave, Ste 110, Vancouver, WA, 98664
This result applies to these offices. Other locations are not confirmed.
$0a monthHumanaChoice H5525-087 (PPO)
Source: Humana provider directory.
Listed offices for this plan:
- 501 N Graham St, Ste 585, Portland, OR, 97227
- 700 NE 87th Ave, Ste 110, Vancouver, WA, 98664
This result applies to these offices. Other locations are not confirmed.
$96a month
8 more Humana plans haven't been checked yet.
Aetna Medicare
Not checked yet.
Align Senior Care
Not checked yet.
Alignment Health Plan
Not checked yet.
12 more Alignment Health Plan plans haven't been checked yet.
Anthem Blue Cross Partnership Plan · Anthem Blue Cross
Not checked yet.
11 more Anthem Blue Cross Partnership Plan plans haven't been checked yet.
Astiva Health
Not checked yet.
Blue Shield of California
Not checked yet.
CalOptima Health OneCare
Not checked yet.
Champion Heath Plan
Not checked yet.
Clever Care Health Plan
Not checked yet.
Imperial Health Plan of California, Inc.
Not listed on its 4 plans here. That isn't proof they're out of network.
Kaiser Permanente
Not checked yet.
3 more Kaiser Permanente plans haven't been checked yet.
SCAN Health Plan
Not checked yet.
UnitedHealthcare
Not checked yet.
VillageHealth
Not checked yet.
Wellcare
Not checked yet.
Premiums are each plan's own monthly premium, as filed with Medicare. You keep paying your Medicare Part B premium.
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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
- 2006
- Registry record updated
- Jun 6, 2025
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Tammy Winchell?
In Marin and Orange counties, CA, 2 Medicare Advantage plans for 2027 list Tammy in the carrier's own provider directory, including Humana USAA Honor Giveback (PPO) and HumanaChoice H5525-087 (PPO). Networks can change during the year, so confirm with the office or the plan before you enroll.
Where does Tammy Winchell practice?
2 locations, including 750 Redwood Hwy Frontage Rd Ste 1204, Mill Valley, CA. All of them are listed on this page.
How do I confirm Tammy is in my plan's network?
Call the member services number on your plan card and give them the NPI 1679673347, 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 Marin and Orange counties, CA. 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.