Ryuko IshikawaMD
Psychiatry & Neurology, Psychiatry
2027 Medicare Advantage
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Medicare Advantage plans for San Mateo and Tulare counties, CA.
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Not checked yet
We haven't asked Aetna Medicare, Alignment Health Plan, Anthem Blue Cross, Blue Shield of California, CCHP (Chinese Community Health Plan), HEALTH PLAN OF SAN MATEO, Humana, Imperial Health Plan of California, Inc., Kaiser Permanente, SCAN Health Plan, UnitedHealthcare and Wellcare's directories about Ryuko yet. A Silverpath advisor can check for you now.
The 39 Medicare Advantage plans we show for San Mateo and Tulare counties, CA in 2027
- 23 not listed
- 16 not checked yet
Aetna Medicare
Not listed on its 2 plans here. That isn't proof they're out of network.
Alignment Health Plan
Not checked yet.
1 more Alignment Health Plan plan hasn't been checked yet.
Anthem Blue Cross · Anthem Blue Cross Partnership Plan · Anthem Blue Cross and Blue Shield
Not checked yet.
4 more Anthem Blue Cross plans haven't been checked yet.
Blue Shield of California
Not listed on its 1 plan here. That isn't proof they're out of network.
CCHP (Chinese Community Health Plan)
Not listed on its 2 plans here. That isn't proof they're out of network.
HEALTH PLAN OF SAN MATEO
Not listed on its 1 plan here. That isn't proof they're out of network.
Humana
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.
4 more Kaiser Permanente plans haven't been checked yet.
SCAN Health Plan
Not checked yet.
2 more SCAN Health Plan plans haven't been checked yet.
UnitedHealthcare
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 23, 2026
Where they practice
2 practice locations
- NPI issued
- 2010
- Registry record updated
- Jan 19, 2024
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Where does Ryuko Ishikawa practice?
2 locations, including 138 E Hillsdale Blvd, San Mateo, CA. All of them are listed on this page.
How do I confirm Ryuko is in my plan's network?
Call the member services number on your plan card and give them the NPI 1053629634, 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 San Mateo and Tulare 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.