Updated October 2026

Largest pathology and laboratory groups in Illinois

Medical group directory
Illinois
Pathology and laboratory

Groups: 53
Pathology groups: 53
Pathology specialists: 287
Physicians: 326
More than one site: 35

There are 53 pathology and laboratory groups in Illinois with a Medicare PAC ID. Midwest Diagnostic Pathology is the largest, with 53 physicians.

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Midwest Diagnostic Pathology is the largest pathology and laboratory group in Illinois, with 53 physicians

Ranked by physicians with an Illinois address linked to each group. Addison-Central Pathology is second with 23, and University Pathology Diagnostics third with 21.

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Pathology and laboratory groups in Illinois, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	Midwest Diagnostic PathologyPark Ridge · 12 sites	Parent on file	53	55	Decision makers
2	Addison-Central PathologyChicago · 4 sites	Parent on file	23	24	Decision makers
3	University Pathology DiagnosticsChicago · 1 site	Parent on file	21	21	Decision makers
4	University Pathologists, P.C.Chicago · 1 site	-	19	19	Decision makers
5	Alliance Pathology ConsultantsElk Grove Village · 4 sites	Parent on file	18	18	Decision makers
6	DuPage Pathology AssociatesHinsdale · 5 sites	Parent on file	16	16	Decision makers
7	Pathology Associates of Central Illinois (PACI)Springfield · 4 sites	-	16	16	Decision makers
8	Partners in Pathology and Laboratory MedicineNaperville · 4 sites	-	15	16	Decision makers
9	Illinois Pathologist ServicesPeoria · 5 sites	Parent on file	15	15	Decision makers
10	Laboratory and Pathology DiagnosticsNaperville · 2 sites	-	14	15	Decision makers
11	Peoria Tazewell Pathology GroupPeoria · 8 sites	-	14	15	Decision makers
12	Central Illinois PathologyPeoria · 3 sites	-	14	14	Decision makers
13	Comprehensive Pathology Services S.C.New Lenox · 3 sites	Parent on file	12	12	Decision makers
14	Associated Pathologists LtdSpringfield · 8 sites	-	11	11	Decision makers
15	Associated Pathology Consultants, SCElmhurst · 2 sites	Parent on file	11	11	Decision makers
16	Winfield Pathology ConsultantsWinfield · 3 sites	-	11	11	Decision makers
17	North Shore Center for Medical AestheticsNorthbrook · 3 sites	-	10	11	Decision makers
18	Associated Laboratory PhysiciansHarvey · 2 sites	Parent on file	10	10	Decision makers
19	Deerfield Dermatology AssociatesDeerfield · 3 sites	-	9	14	Decision makers
20	CSC Steil DermatologyHinsdale · 2 sites	-	9	11	Decision makers
21	Faith Medical & Gastroenterology CenterAddison · 4 sites	-	9	11	Decision makers
22	Arlington Ridge PathologyArlington Heights · 2 sites	-	9	9	Decision makers
23	Gastroenterologists LtdLibertyville · 3 sites	-	9	9	Decision makers
24	Partners in Pelvic Health North Shore UrogynecologyPark City · 8 sites	-	8	9	Decision makers
25	Elterman Center for Women's and Men's HealthSkokie · 1 site	-	7	11	Decision makers
26	Pinnacle GastroenterologyManteno · 3 sites	Parent on file	7	10	Decision makers
27	Palos DiagnosticsPalos Heights · 1 site	Parent on file	7	8	Decision makers
28	Schaumburg DermatologySchaumburg · 3 sites	-	7	8	Decision makers
29	Elgin Laboratory PhysiciansDekalb · 3 sites	-	7	7	Decision makers
30	Dermatology Specialists of IllinoisAlgonquin · 3 sites	-	6	12	Decision makers
31	Bakal DermatologyHoffman Estates · 2 sites	-	6	8	Decision makers
32	Consolidated Pathology Consultants (CPC Pathology)Lake Forest · 1 site	Parent on file	6	6	Decision makers
33	Lake Shore DermatologyPark City · 2 sites	-	6	6	Decision makers
34	Sch Laboratory PhysiciansChicago · 2 sites	-	6	6	Decision makers
35	Blessing Hospital LaboratoryQuincy · 1 site	Parent on file	5	5	Decision makers
36	GoPath DiagnosticsBuffalo Grove · 3 sites	Parent on file	5	5	Decision makers
37	Pathology Associates of AuroraAurora · 1 site	Parent on file	5	5	Decision makers
38	Pathology Consultants of ChicagoChicago · 1 site	Parent on file	5	5	Decision makers
39	Rockford Associated PathologistsRockford · 1 site	Parent on file	5	5	Decision makers
40	West Central Pathology SpecialistsQuincy · 1 site	Parent on file	5	5	Decision makers
41	Associate Pathologists of JolietJoliet · 1 site	Parent on file	4	4	Decision makers
42	Consultants In Clinical PathologyEvergreen Park · 1 site	Parent on file	4	4	Decision makers
43	North Shore Pathology Consultants, S.C.Evanston · 2 sites	-	4	4	Decision makers
44	Pathology Associates of Central Illinois (PACI)Oak Brook · 1 site	-	4	4	Decision makers
45	Pathology CHP, SCChicago · 2 sites	-	4	4	Decision makers
46	Digestive Disease SpecialistsMoline · 5 sites	-	3	8	Decision makers
47	HSHS St. Mary's Hospital - DecaturDecatur · 3 sites	Parent on file	3	3	Decision makers
48	Illinois Dermatology Institute LaboratoryPark Ridge · 1 site	-	3	3	Decision makers
49	Lake Shore PathologistsWaukegan · 1 site	-	3	3	Decision makers
50	Pathology Consultants, Inc.Olympia Fields · 3 sites	-	3	3	Decision makers

Showing 1 to 10 of 53 pathology and laboratory groups in Illinois

Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data

Versant Diagnostics has the most physicians in Illinois pathology and laboratory groups, with 28 across 4 groups

Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 6 parent organizations have two or more Illinois pathology and laboratory groups. Among health systems, UChicago Medicine has the most groups, 2. Each clinician counts once per parent organization.

Parent organizations with the most Illinois pathology and laboratory groups
#	Parent organization	Illinois groups	Physicians	HCPs
1	Versant DiagnosticsPhysician practice platform	4	28	29
2	UChicago MedicineAcademic health system	2	25	25
3	Rush University System for HealthAcademic health system	2	24	24
4	CPC PathologyTreatment center company	2	17	17
5	Silver Cross Hospital & Medical CentersHealth system	2	13	16
6	Blessing Health SystemHealth system	2	5	5

Parent organizations with two or more Illinois groups

Versant DiagnosticsPhysician practice platform · 4 Illinois pathology and laboratory groups
Addison-Central PathologyMedical group · Chicago
Alliance Pathology ConsultantsMedical group · Elk Grove Village
2 more Illinois groups and their practice sites

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Source: Dmand AI Org Hierarchy Data

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60% of Illinois pathology and laboratory groups are independent, with no larger parent organization

A group counts as independent when no health system, platform or other organization sits above it in the org hierarchy. Every other group belongs to a larger organization.

Illinois pathology and laboratory groups by ownership

Independent3260%
Health system or hospital1121%
Platform or corporate owner48%
Other organization611%

Sites of care beyond their own offices

Practice at a hospital36

Practice at a surgery center1

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Source: Dmand AI Org Hierarchy Data

36 Illinois pathology and laboratory groups practice at a hospital site, and 1 at a surgery center

Sites of care linked to each group in the org hierarchy, beyond its own offices. A group can practice at several kinds of site.

Illinois pathology and laboratory groups by site of care

Hospitals3668%
Ambulatory surgery centers12%

Clinicians in Illinois pathology and laboratory groups

Pathology specialists287

All HCPs365

Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data

Chicago has the most pathology and laboratory groups in Illinois, with 6

6pathology and laboratory groups in Chicago

3pathology and laboratory groups in Peoria

2pathology and laboratory groups in Hinsdale

2pathology and laboratory groups in Naperville

2pathology and laboratory groups in Park City

2pathology and laboratory groups in Park Ridge

More Illinois cities with pathology and laboratory groups

Quincy2
Springfield2
Addison1
Algonquin1
Arlington Heights1
Aurora1
Belleville1
Buffalo Grove1
Decatur1
Deerfield1
Dekalb1
Elk Grove Village1
Elmhurst1
Evanston1
Evergreen Park1

Source: Doctors and Clinicians National Downloadable File (CMS)

Each Illinois pathology and laboratory group profile shows the parent, sites, clinicians and identifiers

Clinicians and specialtiesA count by specialty and a sample of the group's cliniciansOn every profile
Practice locationsMain site and a sample of practice locations, with a count of the restOn every profile
Medicare Part B paymentsMedicare payments to the group, from CMSOn every profile
Group NPI and Medicare PAC IDIdentifiers for matching records across sourcesOn every profile
Parent organizationThe health system, platform or owner above the groupOn every profile
Every clinician and siteThe full roster and every practice locationWith a free account
Leader and clinician contactsWork emails and mobile numbers, found on request and then validatedWith a free account
EHR used by the group's cliniciansThe EHR in use at the group's sitesWith a free account

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Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data

Sources for the Illinois pathology and laboratory group list

Sources for the data on this page
Data on this page	Source
Medical groups, specialties and sites	Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Professional Profile Data
Parent organizations and independence	Dmand AI Org Hierarchy Data
Physicians and HCPs	Dmand AI Affiliation Data
Group NPI and PAC ID	NPPES NPI Registry (CMS) and Doctors and Clinicians National Downloadable File (CMS)

Data last refreshed October 2026Report an inaccuracy Remove my information

Groups whose main specialty is pathology and laboratory and that have a Medicare PAC ID.

FAQ

Frequently asked questions about pathology and laboratory groups in Illinois

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many pathology and laboratory groups are in Illinois?

There are 53 pathology and laboratory groups in Illinois with a Medicare PAC ID. Between them they have 287 pathology specialists.

Which companies own the most pathology and laboratory groups?

By physicians, Versant Diagnostics, with 28 across 4 groups, followed by UChicago Medicine with 25 and Rush University System for Health with 24.

How many Illinois pathology and laboratory groups are independent?

32, or 60%, have no larger parent organization in the Dmand AI org hierarchy. 11 belong to a health system or hospital and 4 to a physician platform or corporate owner.

Why are pathology and laboratory listed together?

They share one specialty category in the Dmand AI medical group data. Each group is listed under its main specialty.

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