401(k) · DOL Form 5500 · 2023

Sound Inpatient Physicians, Inc. 401(k) Plan

Data updated 2026-08-25

$511M
Total assets Above avg plan size
4,956
Participants Above avg headcount
97th
Percentile by assets National rank
$103,190
Avg per participant Below avg balance/head
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Official DOL plan name: Sound Physicians 401(k) Plan · Sponsored by Sound Inpatient Physicians, Inc. · Washington · Healthcare & Social Assistance

$511M in assets, 4,956 participants

Sound Inpatient Physicians, Inc.'s Sound Physicians 401(k) Plan reported $511M in total assets and 4,956 participants in its 2023 DOL Form 5500 filing, ranking in the 97th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #17,267 in Healthcare & Social Assistance (17,684 peers)

Coverage in Washington

Sound Physicians 401(k) Plan covers 4,956 participants in Washington, 3.4x the typical Washington plan (state average ~1,476 per filing). Assets: $511M.

#17,267
in Healthcare & Social Assistance (17,684 peers)
+25.9%
assets growth YoY
5.1×
vs typical plan assets (national mean)

Sound Physicians 401(k) Plan's outsized position by total assets

Sound Physicians 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$511,412,021 Top 3% higher than 97% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Sound Physicians 401(k) Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Sound Physicians 401(k) Plan lands in the large band (4,956 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Sound Physicians 401(k) Plan reported net income rose from -$29M in the plan year 2022 filing to $105M in the plan year 2023 filing.
  • Sound Physicians 401(k) Plan end-of-year assets rose from $406M in the plan year 2022 filing to $511M in the plan year 2023 filing.
  • Sound Physicians 401(k) Plan reported participants rose from 4,645 in the plan year 2022 filing to 4,956 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 203050924 · Sound Inpatient Physicians, Inc. PY 2023 · 401(k)

Sound Physicians 401(k) Plan · $511M · 4,956 · 97th

  • BOOK $511M
  • BOOK 4,956
  • BOOK 97th
  • BOOK 401(k)
  • BOOK near Irvine Company Unified Savings Plan
  • BOOK ind #17267

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Healthcare & Social Assistance retirement plans → · Plans in Washington →

Sound Physicians 401(k) Plan in the asset neighbourhood

Process Equipment Group 401(k) Savings PlanProcess Equipment Group 401(…$512MIrvine Company Unified Savings PlanIrvine Company Unified Savin…$512MSound Physicians 401(k) Plan$511MAaa Club Alliance Inc. 401(k) Retirement Savings PlanAaa Club Alliance Inc. 401(k…$511MMacmillan Retirement Savings PlanMacmillan Retirement Savings…$511M
End-of-year total assets ($M) among Sound Physicians 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Washington filing particulars

Total Assets (Beginning of Year)$406M
Net Assets (End of Year)$511M
Net Income$105M
Employer EIN203050924
Plan Effective Date2005-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Sound Inpatient Physicians, Inc.)

Sponsor-wide plan assets over time

All Sound Inpatient Physicians, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$557M 37.110576082380604% vs 2022
2024 filing year
$350M$400M$450M$500M$550M$600M 202220232024 $406M $557M ▲ +37.1%
Year Plans Participants Total Assets
2022 1 4,645 $406M
2023 1 4,956 $511M
2024 1 4,698 $557M

Nearby 401(k) Plans in Washington

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Sound Physicians 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -20020406080 Total assets ($B) Participants Sound Physicians 401(k) Plan, Total assets ($B): 0.511412021 · Participants: 4956Sound Physicians 401(k) PlanThe Boeing Company 401(k) Retirement Plan, Total assets ($B): 72.246135158 · Participants: 128910The Boeing Company 401(k) Retirement PlanMicrosoft Corporation Savings Plus 401(k) Plan, Total assets ($B): 53.225853429 · Participants: 123296Microsoft Corporation Savings Plus 401(k) PlanCostco 401(k) Retirement Plan, Total assets ($B): 33.384845813 · Participants: 192744Costco 401(k) Retirement PlanT-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust, Total assets ($B): 8.338937292 · Participants: 71538T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust401(k) Savings Plan, Total assets ($B): 8.118808679 · Participants: 87590401(k) Savings Plan
Sound Physicians 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants
Compare Sound Physicians 401(k) Plan side-by-side with 3 peers →

Sound Physicians 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Washington, the nearest 401(k) by assets is Irvine Company Unified Savings Plan in CA ($512M); by covered participants it is The Nebraska Furniture Mart, Inc. Profit Sharing Plan in NE (4,955 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($511M here).

Similar participant headcount

Nearest other-state filings by covered participants (4,956 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Sound Physicians 401(k) Plan assets move in 2023? ▼
Sound Physicians 401(k) Plan grew sharply - up 25.9% during 2023, from $406M to $511M. Reported net income was $105M.
How have Sound Inpatient Physicians, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Sound Inpatient Physicians, Inc.'s sponsor-wide assets grew 37.1%, from $406M to $557M.
Where does Sound Physicians 401(k) Plan rank by assets among Form 5500 filers? ▼
Sound Physicians 401(k) Plan ranks in the 97th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to Sound Physicians 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Irvine Company Unified Savings Plan in CA ($512M, 3,422 participants).
Which 401(k) plans cover a similar participant headcount to Sound Physicians 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is The Nebraska Furniture Mart, Inc. Profit Sharing Plan in NE (4,955 participants, $349M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 203050924.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.