Registry data as of Aug 27, 2026

By Your Side

By Your Side holds 5 active organization NPIs in the federal registry, with practice locations in 5 cities in 5 states. Each location can bill under its own NPI.

CMS NPPES registry, file of Aug 9, 2026 · legal names grouped after punctuation and "LLC" are removed · method · Verify with CMS →

Which NPI is yours?

Search the organization with your city to find the NPI for the location you visit or bill.

Find a location's NPI

Darien, IL has the most NPIs, 1

  1. Darien, IL1
  2. New Market, MD1
  3. Lorain, OH1
  4. Curwensville, PA1
  5. Norfolk, VA1

Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.

Most NPIs were issued in 2007 and 2008

By Your Side NPIs by year issued2007: 1, 2008: 1, 2009: 1, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 0, 2021: 1, 2022: 0, 2023: 100.30.50.812007200920112013201520172019202120231111
By Your Side NPIs by year issued2007: 1, 2008: 1, 2009: 1, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 0, 2021: 1, 2022: 0, 2023: 100.30.50.812007200820092010201120122013201420152016201720182019202020212022202311111
By Your Side NPIs by year issued2007: 1, 2008: 1, 2009: 1, 2010: 0, 2011: 0, 2012: 0, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 0, 2021: 1, 2022: 0, 2023: 100.30.50.812007200920112013201520172019202120231111

Source: CMS NPPES, enumeration dates.

1 NPIs were issued in 2007 alone, more than in any other year; none in 12 of the years between.

Darien, IL locations

The city with the most By Your Side NPIs. The full list of all 5 follows.

NPILocationPrimary taxonomyIssued
19222339238201 CASS AVE, Darien, ILBehavior AnalystMay 19, 2009
All 5 locations, by state and city
NPILocationPrimary taxonomyIssued
19222339238201 CASS AVE, Darien, ILBehavior AnalystMay 19, 2009
18616543456520 TWIN LAKE DR, New Market, MDHome Health AgencyJun 26, 2008
13369160481936 E 41ST ST, Lorain, OHRespite CareDec 4, 2023
1154513653423 THOMPSON ST, Curwensville, PAVoluntary or Charitable AgencyAug 17, 2007
1669138269736 STANWIX SQ, Norfolk, VANon-emergency Medical Transport (VAN)Nov 9, 2021

Related names

Checking an organization

  1. Match the NPI to the exact location you will visit or bill; each location can have its own.
  2. Confirm the business entity with the secretary of state.
  3. Check the HHS-OIG exclusion list for the organization and its owners.
  4. Verify each clinician you will see on their own record and with the state license search.

Common questions

Why does By Your Side have 5 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. By Your Side's NPIs list practice locations in 5 cities.

Is an organization NPI a license?

No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.

Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.