Updated October 2026

Largest radiology and imaging groups in Maryland

Medical group directory
Maryland
Radiology and imaging

Groups: 43
Radiology groups: 43
Radiology specialists: 582
Physicians: 1,046
More than one site: 39

There are 43 radiology and imaging groups in Maryland with a Medicare PAC ID. Johns Hopkins Medicine is the largest, with 481 physicians.

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Johns Hopkins Medicine is the largest radiology and imaging group in Maryland, with 481 physicians

Ranked by physicians with a Maryland address linked to each group. Advanced Radiology is second with 118, and Johns Hopkins Medicine third with 110. 3 Maryland groups have 100 or more physicians.

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Radiology and imaging groups in Maryland, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	Johns Hopkins MedicineBaltimore · 75 sites	Parent on file	481	692	Decision makers
2	Advanced RadiologyOwings Mills · 109 sites	Parent on file	118	124	Decision makers
3	Johns Hopkins MedicineBaltimore · 15 sites	Parent on file	110	123	Decision makers
4	Professional Services of Holy CrossSilver Spring · 33 sites	Parent on file	94	194	Decision makers
5	University of Maryland Diagnostic Imaging SpecialistsBaltimore · 48 sites	Parent on file	83	84	Decision makers
6	Community Radiology AssociatesSilver Spring · 62 sites	Parent on file	75	76	Decision makers
7	UM Charles Regional ImagingLa Plata · 9 sites	Parent on file	72	72	Decision makers
8	University Imaging CenterBaltimore · 8 sites	Parent on file	70	71	Decision makers
9	Calvert Medical Imaging Center (CMIC)Prince Frederick · 81 sites	Parent on file	69	69	Decision makers
10	MedStar Radiology Network at OlneyOlney · 45 sites	Parent on file	49	49	Decision makers
11	Adventist HealthCare ImagingRockville · 15 sites	Parent on file	36	36	Decision makers
12	University of Maryland Radiation Oncology AssociatesBaltimore · 12 sites	Parent on file	30	40	Decision makers
13	Luminis Health ImagingBowie · 12 sites	Parent on file	28	28	Decision makers
14	Annapolis Radiology AssociatesAnnapolis · 4 sites	-	27	29	Decision makers
15	Chesapeake Medical ImagingAnnapolis · 20 sites	Parent on file	22	22	Decision makers
16	Delmarva Radiology GroupSalisbury · 5 sites	Parent on file	21	22	Decision makers
17	Peninsula RadiologySalisbury · 3 sites	Parent on file	15	16	Decision makers
18	Associated RadiologistsHagerstown · 9 sites	-	15	15	Decision makers
19	Associates in Radiation MedicineBowie · 9 sites	-	14	14	Decision makers
20	Washington Open MRIRockville · 4 sites	Parent on file	13	14	Decision makers
21	Associated RadiologistsHagerstown · 4 sites	-	12	12	Decision makers
22	Diagnostic Medical ImagingSilver Spring · 11 sites	Parent on file	10	10	Decision makers
23	Associated RadiologistsHagerstown · 5 sites	-	8	8	Decision makers
24	The Radiology ClinicRockville · 3 sites	Parent on file	8	8	Decision makers
25	William E. Kahlert Regional Cancer Center at Carroll HospitalWestminster · 1 site	Parent on file	5	8	Decision makers
26	Charter RadiologyColumbia · 3 sites	-	5	5	Decision makers
27	Diagnostic Imaging Associates PCLanham · 2 sites	-	5	5	Decision makers
28	Frederick Health Medical Group - Radiation MedicineFrederick · 2 sites	Parent on file	5	5	Decision makers
29	Radiation Oncology HealthCareBaltimore · 3 sites	-	5	5	Decision makers
30	National Vascular PhysiciansOxon Hill · 3 sites	-	4	5	Decision makers
31	MedStar Health: Radiation Oncology at MedStar Franklin Square Medical CenterBaltimore · 4 sites	Parent on file	3	8	Decision makers
32	Allegany ImagingCumberland · 12 sites	-	3	5	Decision makers
33	Advanced Molecular Imaging & TherapyGlen Burnie · 1 site	-	3	4	Decision makers
34	Maryland Center For ARCCatonsville · 2 sites	-	3	4	Decision makers
35	TridentCareHunt Valley · 26 sites	Parent on file	3	4	Decision makers
36	Capitol Vascular and Oncology InstituteBrandywine · 1 site	-	3	3	Decision makers
37	Oakland MRI CenterOakland · 4 sites	Parent on file	3	3	Decision makers
38	Diagnostic Laboratories & RadiologyHunt Valley · 21 sites	Parent on file	2	3	Decision makers
39	Laurel Radiology ServicesLaurel · 1 site	Parent on file	2	2	Decision makers
40	TridentCareHunt Valley · 16 sites	Parent on file	2	2	Decision makers
41	Rely RadiologyHunt Valley · 31 sites	Parent on file	1	2	Decision makers
42	TridentCareHunt Valley · 14 sites	Parent on file	1	2	Decision makers
43	TridentCareHunt Valley · 10 sites	Parent on file	1	1	Decision makers

Showing 1 to 10 of 43 radiology and imaging groups in Maryland

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

Johns Hopkins Health System has the most physicians in Maryland radiology and imaging groups, with 483 across 2 groups

Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 7 parent organizations have two or more Maryland radiology and imaging groups. Among health systems, University of Maryland Medical System has the most groups, 3. Each clinician counts once per parent organization.

Parent organizations with the most Maryland radiology and imaging groups
#	Parent organization	Maryland groups	Physicians	HCPs
1	Johns Hopkins Health SystemAcademic health system	2	483	694
2	RadNetTreatment center company	4	201	208
3	University of Maryland Medical SystemHealth system	3	113	124
4	Trinity HealthHealth system	2	104	204
5	MedStar HealthHealth system	2	52	57
6	TidalHealth Peninsula RegionalHealth system	2	21	22
7	TridentcareTreatment center company	5	3	4

Parent organizations with two or more Maryland groups

Johns Hopkins Health SystemAcademic health system · 2 Maryland radiology and imaging groups
Johns Hopkins MedicineMulti-specialty group · Baltimore
Johns Hopkins MedicineMedical group · Baltimore

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Source: Dmand AI Org Hierarchy Data

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30% of Maryland radiology and imaging 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.

Maryland radiology and imaging groups by ownership

Independent1330%
Health system or hospital1535%
Platform or corporate owner12%
Other organization1433%

Sites of care beyond their own offices

Practice at a hospital29

Practice at a surgery center5

Practice at a skilled nursing facility3

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Source: Dmand AI Org Hierarchy Data

29 Maryland radiology and imaging groups practice at a hospital site, and 5 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.

Maryland radiology and imaging groups by site of care

Hospitals2967%
Ambulatory surgery centers512%
Skilled nursing facilities37%
Therapy and rehab centers12%
Dialysis centers12%

Clinicians in Maryland radiology and imaging groups

Radiology specialists582

All HCPs1,390

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

Baltimore has the most radiology and imaging groups in Maryland, with 7

7radiology and imaging groups in Baltimore

6radiology and imaging groups in Hunt Valley

3radiology and imaging groups in Hagerstown

3radiology and imaging groups in Rockville

3radiology and imaging groups in Silver Spring

2radiology and imaging groups in Annapolis

More Maryland cities with radiology and imaging groups

Bowie2
Salisbury2
Brandywine1
Catonsville1
Columbia1
Cumberland1
Frederick1
Glen Burnie1
La Plata1
Lanham1
Laurel1
Oakland1
Olney1
Owings Mills1
Oxon Hill1

Source: Doctors and Clinicians National Downloadable File (CMS)

Each Maryland radiology and imaging 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 Maryland radiology and imaging 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 radiology and imaging and that have a Medicare PAC ID.

FAQ

Frequently asked questions about radiology and imaging groups in Maryland

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

How many radiology and imaging groups are in Maryland?

There are 43 radiology and imaging groups in Maryland with a Medicare PAC ID. Between them they have 582 radiology specialists.

Which companies own the most radiology and imaging groups?

By physicians, Johns Hopkins Health System, with 483 across 2 groups, followed by RadNet with 201 and University of Maryland Medical System with 113.

How many Maryland radiology and imaging groups are independent?

13, or 30%, have no larger parent organization in the Dmand AI org hierarchy. 15 belong to a health system or hospital and 1 to a physician platform or corporate owner.

Why are radiology and imaging 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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