Karen O'BrienMD
Obstetrics & Gynecology, Maternal & Fetal Medicine
2027 Medicare Advantage
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Medicare Advantage plans for Norfolk and Suffolk counties, 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 35 plans so far
Some of Tufts Health Plan, UnitedHealthcare, Aetna Medicare, Mass General Brigham Health Plan, Fallon Health, Molina Healthcare of Massachusetts, Commonwealth Care Alliance Massachusetts, Commonwealth Care Alliance, Inc., Blue Cross Blue Shield of Massachusetts, eternalHealth and Humana's 2027 plans in Norfolk and Suffolk counties, MA haven't been checked yet.
The 60 Medicare Advantage plans we show for Norfolk and Suffolk counties, MA in 2027
- 35 list Karen
- 13 not listed
- 12 not checked yet
Tufts Health Plan
10 plans list Karen; not listed on 2 other plans.
Tufts Medicare Preferred HMO Prime No Rx (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
- 330 Brookline Ave, # 333, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a monthTufts Medicare Preferred HMO Smart Saver Rx (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
- 330 Brookline Ave, # 333, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a monthTufts Medicare Preferred HMO Value No Rx (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
- 330 Brookline Ave, # 333, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a monthTufts Medicare Preferred HMO Basic Rx (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
- 330 Brookline Ave, # 333, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$82a month
7 more Tufts Health Plan plans haven't been checked yet.
UnitedHealthcare
6 plans list Karen; not listed on 2 other plans.
AARP Medicare Advantage from UHC MA-0003 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 330 Brookline Ave, # 754, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Patriot No Rx MA-MA01 (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 330 Brookline Ave, # 754, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage Patriot No Rx MA-MA2 (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 330 Brookline Ave, # 754, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a monthAARP Medicare Advantage from UHC MA-0006 (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 330 Brookline Ave, # 754, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$75a month
Aetna Medicare
5 plans list Karen.
Aetna Medicare Eagle Giveback (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 300 Congress St, Quincy, MA, 02169
- 15 Columbia Rd, Pembroke, MA, 02359
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:
- 300 Congress St, Quincy, MA, 02169
- 15 Columbia Rd, Pembroke, MA, 02359
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Signature (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 300 Congress St, Quincy, MA, 02169
- 15 Columbia Rd, Pembroke, MA, 02359
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Signature Extra (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 300 Congress St, Quincy, MA, 02169
- 15 Columbia Rd, Pembroke, MA, 02359
This result applies to these offices. Other locations are not confirmed.
$0a month
Mass General Brigham Health Plan
5 plans list Karen.
Mass General Brigham Advantage Core (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, South Weymouth, MA, 02190
- 143 Longwater Dr, Norwell, MA, 02061
This result applies to these offices. Other locations are not confirmed.
$0a monthMass General Brigham Advantage Secure (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, South Weymouth, MA, 02190
- 143 Longwater Dr, Norwell, MA, 02061
This result applies to these offices. Other locations are not confirmed.
$60a monthMass General Brigham Advantage Plus (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, South Weymouth, MA, 02190
- 143 Longwater Dr, Norwell, MA, 02061
This result applies to these offices. Other locations are not confirmed.
$180a monthMass General Brigham SCO (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, South Weymouth, MA, 02190
- 143 Longwater Dr, Norwell, MA, 02061
- 330 Brookline Ave, # KS-322, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$0a month
Fallon Health
4 plans list Karen; not listed on 2 other plans.
Fallon Medicare Plus Orange (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
This result applies to these offices. Other locations are not confirmed.
$0a monthFallon Medicare Plus Saver No Rx (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
This result applies to these offices. Other locations are not confirmed.
$0a monthFallon Medicare Plus Green (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
This result applies to these offices. Other locations are not confirmed.
$83a monthFallon Medicare Plus Blue (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
This result applies to these offices. Other locations are not confirmed.
$185a month
Molina Healthcare of Massachusetts
3 plans list Karen.
Molina One Care (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
This result applies to these offices. Other locations are not confirmed.
$0a monthSenior Whole Health SCO (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
This result applies to these offices. Other locations are not confirmed.
$0a monthSenior Whole Health SCO NHC (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, Weymouth, MA, 02190
This result applies to these offices. Other locations are not confirmed.
$33.80a month
Commonwealth Care Alliance Massachusetts
1 plan lists Karen.
CCA Senior Care Options (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, # 97, South Weymouth, MA, 02190
- 55 Fogg Rd, South Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
- 689 Bedford St, Whitman, MA, 02382
- 15 Columbia Rd, Pembroke, MA, 02359
- 330 Brookline Ave, Fl 8, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$33.80a month
Commonwealth Care Alliance, Inc.
1 plan lists Karen.
CCA One Care (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 55 Fogg Rd, # 97, South Weymouth, MA, 02190
- 55 Fogg Rd, South Weymouth, MA, 02190
- 51 Performance Dr, Weymouth, MA, 02189
- 689 Bedford St, Whitman, MA, 02382
- 15 Columbia Rd, Pembroke, MA, 02359
- 330 Brookline Ave, Fl 8, Boston, MA, 02215
This result applies to these offices. Other locations are not confirmed.
$33.80a month
Blue Cross Blue Shield of Massachusetts
Not listed on its 7 plans here. That isn't proof they're out of network.
eternalHealth
Not checked yet.
Humana
Not 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 Karen 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
3 practice locations
- NPI issued
- 2006
- Registry record updated
- Oct 19, 2023
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Karen O'Brien?
In Norfolk and Suffolk counties, MA, 35 Medicare Advantage plans for 2027 list Karen in provider data from Medicare.gov or the carrier, including Tufts Medicare Preferred HMO Prime No Rx (HMO), Tufts Medicare Preferred HMO Smart Saver Rx (HMO) and Tufts Medicare Preferred HMO Value No Rx (HMO). 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 O'Brien practice?
3 locations, including 55 Fogg Rd, South Weymouth, MA. All of them are listed on this page.
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 1780623215, 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 Norfolk and Suffolk counties, 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.