Provider profile

Karen AdlerMD

Psychiatry & Neurology, Psychiatry

CMS lists a Medicare opt-outNPI 1508029182
229 Massachusetts Ave Ste 5, Lexington, MA 02420617-855-8676

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Medicare Advantage plans for Middlesex County, MA.

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 9 plans so far

Some of Mass General Brigham Health Plan, UnitedHealthcare, Aetna Medicare, Blue Cross Blue Shield of Massachusetts, Commonwealth Care Alliance Massachusetts, Commonwealth Care Alliance, Inc., eternalHealth, Fallon Health, Molina Healthcare of Massachusetts and Tufts Health Plan's 2027 plans in Middlesex County, MA haven't been checked yet.

The 50 Medicare Advantage plans we show for Middlesex County, MA in 2027

  • 9 list Karen
  • 38 not listed
  • 3 not checked yet

Mass General Brigham Health Plan

5 plans list Karen.

5plans
  • Mass General Brigham Advantage Core (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3.5 starsH6847-002-000Medicare.gov
    $0a month
  • Mass General Brigham Advantage Secure (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3.5 starsH6847-001-000Medicare.gov
    $60a month
  • Mass General Brigham Advantage Plus (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3.5 starsH6847-003-000Medicare.gov
    $180a month
  • Mass General Brigham SCO (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 329 Massachusetts Ave, Ste 6, Lexington, MA, 02420
    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverageH0777-001-000Medicare.gov
    $0a month

UnitedHealthcare

4 plans list Karen; not listed on 4 other plans.

4plans
  • UHC One Care MA-YL (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverageH4610-002-000Medicare.gov
    $0a month
  • UHC Senior Care Options MA-Y001 (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverage3.5 starsH2226-001-000Medicare.gov
    $0a month
  • UHC Senior Care Options MA-YL (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverage3.5 starsH2226-003-000Medicare.gov
    $17.20a month
  • UHC One Care MA-Y3 (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • Virtual Visits Only Provider, Boston, MA, 02199

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverageH4610-001-000Medicare.gov
    $20.20a month

Aetna Medicare

Not listed on its 5 plans here. That isn't proof they're out of network.

Blue Cross Blue Shield of Massachusetts

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

Commonwealth Care Alliance Massachusetts

Not listed on its 1 plan here. That isn't proof they're out of network.

Commonwealth Care Alliance, Inc.

Not listed on its 1 plan here. That isn't proof they're out of network.

eternalHealth

Not checked yet.

Fallon Health

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

Molina Healthcare of Massachusetts

Not listed on its 3 plans here. That isn't proof they're out of network.

Tufts Health Plan

Not listed on its 12 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.

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CMS lists a Medicare opt-out period

CMS's opt-out file, covering data through 2026-08-31, lists a period from 2022-12-12 until 2026-12-12. Medicare generally won't pay for services from an opted-out provider, except in emergencies. Confirm current status with the office. This is separate from Advantage plan network and office matches.

CMS opt-out source · Data through 2026-08-31 · Reviewed Oct 22, 2026

Practice location

229 Massachusetts Ave Ste 5
Lexington, MA 02420

NPI Registry
NPI issued
2008
Registry record updated
Jul 21, 2022

Medicare's clinician details aren't available on this page yet.

Common questions

Does Karen Adler accept Medicare?

CMS lists a Medicare opt-out. CMS's opt-out file, covering data through 2026-08-31, lists a period from 2022-12-12 until 2026-12-12. Medicare generally won't pay for services from an opted-out provider, except in emergencies. Confirm current status with the office. This is separate from Advantage plan network and office matches.

Which 2027 Medicare Advantage plans list Karen Adler?

In Middlesex County, MA, 9 Medicare Advantage plans for 2027 list Karen in provider data from Medicare.gov or the carrier, including Mass General Brigham Advantage Core (HMO-POS), Mass General Brigham Advantage Secure (HMO-POS) and Mass General Brigham Advantage Plus (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.

Where does Karen Adler practice?

229 Massachusetts Ave Ste 5, Lexington, MA 02420.

How do I confirm Karen is in my plan's network?

Call the member services number on your plan card and give them the NPI 1508029182, or ask a Silverpath advisor to check for you. It's free.

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A Silverpath advisor can confirm Karen's networks with the carrier and help you compare plans that include them.

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Is this your practice?

Patients can use Silverpath to find practices and check plan networks in Middlesex County, MA. 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.

Sources. Name, specialty and locations: the CMS NPI Registry (record updated 2022-07-21). Plan networks: carrier provider directories and Medicare.gov provider data, checked Oct 14, 2026. CMS matches apply to the covered offices shown with each plan. Plans: CMS 2027 Medicare Advantage landscape.

Networks change during the year, and a directory can be out of date. Confirm with the provider's office and the plan before you enroll or schedule care.

Silverpath is a licensed insurance agency. This page isn't affiliated with or endorsed by Karen Adler or their practice. Not connected with or endorsed by the U.S. government or the federal Medicare program.

We do not offer every plan available in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.

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