Value explorer / IL

IL: the directory by county and ZIP

211,794
practitioners
42.2%
have a workplace
71,858
provider organizations
2,358
tax records (not added)
103
counties

The bar is the share with a workplace listed, not the number of practitioners. Ranking by headcount would just rank by population.

CountyPractitionersHas a workplaceProvider orgsTax recordsZIPs
+Cook County87,84736.4%28,248924162
+DuPage County24,45444.4%6,98721635
+(county unknown)13,26681.5%9765287
+Lake County12,11338.4%3,59411727
+Will County7,58643.8%2,83612531
+Kane County6,50335.1%1,9497119
+McHenry County4,34530.3%1,2164318
+Madison County4,14948.4%1,2665322
+Peoria County3,86255.2%9833020
+St. Clair County3,78443.8%1,2513422
+Sangamon County3,69143.1%8993620
+Winnebago County3,66439.1%1,0943518
+Champaign County3,38042.8%6643115
+McLean County2,73236.9%6983415
+Rock Island County1,71727.4%5242110
+Williamson County1,52121.6%384136
+DeKalb County1,45539.5%4051610
+LaSalle County1,44863.5%4162117
+Tazewell County1,31037.6%4032011
+Adams County1,28554.9%281116
+Macon County1,26437.3%3661610
+Coles County1,26054.8%21074
+Jefferson County1,11268.2%272108
+Kankakee County1,01035.0%5473112
+Vermilion County92522.9%9,040914
+Kendall County88440.5%317126
+Jackson County87041.4%28099
+Stephenson County74049.3%166125
+Whiteside County65360.3%193127
+Franklin County64212.6%13569
+Saline County61759.3%17185
+Lee County60216.9%13664
+Grundy County56053.4%218106
+Monroe County47134.8%14083
+Marion County44948.8%197108
+Knox County39825.4%220137
+Effingham County39634.8%199176
+Henry County35749.0%12889
+Ford County33257.5%9234
+Warren County32578.8%7345
+Morgan County32547.4%17274
+Piatt County29084.1%4054
+Ogle County27845.7%10889
+Livingston County27428.1%11468
+Macoupin County26346.0%1581413
+Montgomery County26152.9%11695
+Christian County26161.7%10898
+Crawford County25462.2%7854
+Boone County23140.3%9843
+Iroquois County23034.8%114411
+McDonough County22938.9%10084
+Randolph County22933.6%154107
+Richland County22420.5%9033
+Fulton County22045.9%9388
+Logan County21545.6%8063
+Perry County20026.5%10343
+Lawrence County18725.1%4643
+Jo Daviess County18261.5%6848
+Edgar County16934.9%6834
+Cass County15921.4%5145
+De Witt County15559.4%6132
+Wabash County15538.7%4512
+Union County15518.1%7534
+Johnson County15131.8%2625
+Wayne County14850.7%6354
+White County13837.0%5954
+Massac County13525.2%4742
+Woodford County13456.0%8557
+Clinton County13232.6%8658
+Hancock County12740.9%5578
+Bond County11939.5%6524
+Bureau County11726.5%118811
+Jersey County10827.8%5452
+Jasper County10617.9%2742
+Clay County10125.7%4833
+Douglas County9956.6%7147
+Shelby County8616.3%5338
+Pike County8623.3%4825
+Marshall County8470.2%3814
+Fayette County8138.3%6858
+Moultrie County7954.4%4453
+Mercer County6968.1%4436
+Mason County5534.5%3333
+Washington County5230.8%5517
+Alexander County4930.6%3214
+Brown County4721.3%2251
+Clark County4438.6%4213
+Schuyler County4233.3%2031
+Carroll County4122.0%3537
+Menard County4057.5%3113
+Edwards County3534.3%1622
+Henderson County3154.8%523
+Greene County3129.0%2624
+Calhoun County2777.8%1401
+Hamilton County185.6%2952
+Cumberland County1618.8%2113
+Hardin County1450.0%1223
+Pulaski County1020.0%1114
+Stark County757.1%1803
+Scott County40.0%1202
+Putnam County30.0%402
+Gallatin County30.0%503
+Pope County0—211

By profession, statewide

ProfessionPractitionersHas a workplace
behavioral-health56,02627.5%
physician50,20270.4%
rehab-therapy31,51126.5%
advanced-practice23,45076.5%
dental11,11715.4%
pharmacy9,5854.2%
nursing6,04533.3%
chiropractic4,58042.9%
student4,42113.6%
other-clinical4,06419.7%
eye-vision2,88464.1%
dietary2,46025.7%
group1,83956.3%
podiatry1,22869.4%
support87213.1%
no-taxonomy85915.5%
facility29121.6%
agency15626.9%
supplier10618.9%
emergency-medical6023.3%
transport3215.6%
payer633.3%

Release 2026-10-07. Methodology 0.7.3-draft.

Counts come from the NDH bulk export at the release named above. Organizations are split by record type and never summed: roughly half the Organization file is `ein` tax records that carry an NPI and an address, so adding them to provider organizations roughly doubles the count. Practitioner geography uses the primary address; 14.85% of practitioners list addresses in more than one state and are counted only in the first. Counties are derived from the Census ZCTA-to-county relationship file, taking the county holding the largest share of a ZIP's population; ZIPs with no dominant county are grouped as unknown. Payer organizations carry no address at all and cannot appear in any geography. Profession categories here come from the directory's own Practitioner.qualification taxonomy, not from NPPES. H54 categorises the same practitioners against their NPPES taxonomy and lands 1 to 2 points different per profession as a result: PA physicians read 73.0% here and 74.3% there. Neither is wrong. This view describes what the directory says about itself, which is the right frame for a directory explorer; H54 asks how the directory compares to the federal registry.

Data as JSON: /api/v1/explorer/il.json. Looking for one provider? Search by name or NPI.