Massachusetts Medical Society 401(k) Plan: Login, Facts & Contact Information

Massachusetts Medical Society 401(k) Plan Facts

Plan name
THE MASSACHUSETTS MEDICAL SOCIETY SAVINGS AND INVESTMENT PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
MASSACHUSETTS MEDICAL SOCIETY
Participants
615 (448 active employees)
Former employees with a balance
144
Plan assets
$173,532,113 at Dec 31, 2024
Average account balance
$288,259 across 602 accounts
Employer contributions
$3,827,064 in plan year 2024 (37% of all contributions)
Recordkeeper
Empower Annuity Insurance Company
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 1982
✓ Employer contributions— Automatic enrollment— Default investment for undecided participants— Participants choose their own investments— Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Sep 26, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $10.2 million went into the plan in contributions, $3.83 million of it from the employer (37%).
  • $16.1 million was paid out to participants.
  • Investment and other income added $20.6 million.
  • Administrative expenses were $137,754, about $229 per account.

How the Massachusetts Medical Society 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
2019602$124.6 million$2.55 million$6.28 million
2020603$145.2 million$2.89 million$7.62 million
2021623$165.1 million$3.06 million$9.59 million
2022600$138.3 million$3.25 million$7.76 million
2023640$158.9 million$3.51 million$13.8 million
2024615$173.5 million$3.83 million$16.1 million

Massachusetts Medical Society 401(k) Contact Information

Phone
781-893-4610
Mailing address
860 WINTER STREET, WALTHAM MA 024511411
Plan sponsor
MASSACHUSETTS MEDICAL SOCIETY
Employer identification number (EIN)
04-2050773
Plan number
002

Questions about the Massachusetts Medical Society 401(k)

Does Massachusetts Medical Society contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $3.83 million, 37% of all contributions.

Does the Massachusetts Medical Society 401(k) have automatic enrollment?

No. The plan does not report automatic enrollment; employees enroll themselves.

How many people are in the Massachusetts Medical Society 401(k) plan?

615 participants at the start of plan year 2024, 448 of them active employees, and 144 former employees who still had money in the plan.

What is the average 401(k) balance at Massachusetts Medical Society?

About $288,259 per account: $173.5 million in plan assets across 602 accounts with a balance at the end of plan year 2024.

Who manages the Massachusetts Medical Society 401(k) accounts?

Empower (listed on the filing as EMPOWER ANNUITY INSURANCE COMPANY) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Massachusetts Medical Society. How do I access my 401(k)?

Your account stays with Empower after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

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