Grossman Imaging Centers

What Grossman Imaging Centers does

Grossman Imaging Centers, founded in 1991 and headquartered in Oxnard, California, operated as an independent diagnostic medical imaging network serving Ventura County communities through 13 physical locations. The company's core offering was a full suite of diagnostic imaging services spanning MRI, CT scans, X-ray, 2D and 3D mammography (including Enhanced Breast Cancer Detection), ultrasound, PET/CT, interventional radiology, DEXA bone density scanning, and MR/CT angiography. All locations held American College of Radiology (ACR) accreditation, a sector-specific quality standard governing advanced imaging delivery and payer reimbursement eligibility. The business model was fee-for-service, generating revenue on a per-procedure basis through direct patient billing and insurance claims processing; primary customers were individual patients (self-pay or insurance-covered) and referring healthcare providers. Pricing was not publicly disclosed, consistent with payer-contracted medical imaging economics. The go-to-market motion was direct-to-consumer combined with provider referrals, supported by phone-based scheduling (805-357-0067), online appointment requests, and a provider portal.

In 2024, Grossman Imaging Centers was acquired by RadNet Inc., a publicly traded national diagnostic imaging operator, and rebranded as Rolling Oaks Radiology. Post-acquisition, the 13 Ventura County locations (Camarillo, Oxnard, Thousand Oaks, Simi Valley, Ventura, and others) operate as a wholly-owned subsidiary within RadNet's 399-center, 8-state network. Sub-brands including Rolling Oaks Radiology Cancer Center, Simi Valley Advanced Imaging, and Thousand Oaks MDI - Lombard indicate service-line specialization, including oncology-focused imaging. Insurance coverage includes Anthem, Cigna, and HealthNet. The leadership team includes Chief Operating Officer Judi Dransart and Chief Financial Officer Ted Elliot. No AI/ML, software-as-a-service, or proprietary technology platform is disclosed; the offering is fundamentally a physical clinical service business.

Name

Grossman Imaging Centers

Legal name

RadNet Inc.

Website

https://grossmanimaging.com

Company type

Public

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

Grossman Imaging Centers, now rebranded as Rolling Oaks Radiology, operates 13 ACR-accredited diagnostic imaging centers in Ventura County, California, offering MRI, CT, mammography, PET/CT, and interventional radiology to individual patients and referring healthcare providers as a RadNet Inc. subsidiary.

Ownership category

akta.pro rank

Headquarters

HQ city

Oxnard

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Infrastructure, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Medical Imaging Services: Fee-for-service medical imaging procedures billed to patients and insurance providers. Services include MRI, CT scans, X-rays, mammography, ultrasound, PET/CT, interventional radiology, and other diagnostic imaging procedures. Revenue is generated on a per-procedure basis through direct patient billing and insurance claims processing.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Grossman Imaging Centers (now operating as Rolling Oaks Radiology) operates a network of diagnostic medical imaging centers in Ventura County, California, offering comprehensive radiology services including MRI, CT scans, X-ray, mammography (2D and 3D), ultrasound, PET/CT, interventional radiology, DEXA bone density, CT angiography, MR angiography, and other specialized imaging procedures. Services are delivered through physical imaging center locations, primarily to individual patients via physician referrals or self-referral for screening exams, with billing handled through insurance providers and direct patient payment.

Product overview

Rolling Oaks Radiology (formerly Grossman Imaging) is a network of diagnostic imaging centers that operates as part of RadNet Inc. The offering consists of a unified service platform providing comprehensive radiology services across multiple facility locations. The core product encompasses the center network with full-service imaging capabilities including MRI, CT scans, mammography (2D and 3D), X-ray, ultrasound, PET/CT, and specialized interventional procedures. Additional modules include service-specific offerings such as Neuroimaging, Cardiac Imaging, Lung Screening, and Thyroid Health. All locations are ACR Accredited and the network accepts major insurance providers including Anthem, Cigna, and HealthNet.

Differentiator

Problem solved

Functional benefit

Brands

• Rolling Oaks Radiology Cancer Center: Oncology-focused imaging center offering cancer screening and diagnostic services
• Simi Valley Advanced Imaging
• Thousand Oaks MDI - Lombard

Products and services

• MRI Magnetic resonance imaging using magnetic fields and radio waves to produce detailed images of internal structures for diagnosing tumors, liver disease, and musculoskeletal injuries; offered to patients with physician referrals.
• CT Scan Cross-sectional body imaging using x-ray equipment to help diagnose cancer, cardiovascular disease, infections, and musculoskeletal disorders.
• X-Ray Quick and accurate imaging test using a small amount of radiation to capture pictures of the body's internal structures to aid in diagnosis of various conditions.
• 3D Mammography Advanced breast imaging service using tomosynthesis technology to create 3D images of breast tissue for improved detection of abnormalities.
• Mammography with EBCD Enhanced Breast Cancer Detection mammography service providing detailed imaging for breast cancer diagnosis and screening.
• Ultrasound High-frequency sound wave imaging for real-time visualization of internal organs and blood flow without ionizing radiation.
• PET/CT Combined positron emission tomography and computed tomography imaging for metabolic activity and anatomical evaluation in cancer, heart disease, and brain disorders.
• Interventional Radiology Minimally invasive imaging-guided procedures for diagnosis and treatment, reducing pain, risk, and recovery time for patients.
• DEXA Bone Density Scan Bone density measurement for osteoporosis diagnosis and fracture risk assessment focusing on lower spine and hips.
• CT Angiography (CTA) X-ray imaging of blood flow in arteries and veins for diagnosing pulmonary embolism, aneurysms, and arterial diseases.
• MR Angiography (MRA) MRI-based blood vessel imaging for diagnosis of arterial diseases, aneurysms, and blood flow issues without ionizing radiation.
• Arthrogram Joint imaging procedure using x-rays, fluoroscopy, or MRI with contrast material to evaluate shoulder, wrist, hip, knee, and ankle structures.
• Myelogram (Myelography) Spinal canal imaging procedure using contrast material with x-rays or CT scans to evaluate the spinal cord, nerve roots, and surrounding structures.
• Neuroimaging Specialized brain and nervous system imaging services using advanced MRI and CT technologies for neurological diagnosis.
• Cardiac Imaging Heart health imaging services including CT angiography and cardiac MRI for evaluating cardiovascular conditions.
• Lung Screening Low-dose CT lung screening services for early detection of lung cancer and pulmonary conditions.
• Thyroid Health Thyroid ultrasound imaging services for evaluation of thyroid nodules and glandular conditions.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators2 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Envision Radiology: Multi-site outpatient imaging provider with CT, MRI, X-ray, ultrasound, mammography and interventional radiology services. Comparable ambulatory radiology delivery model with similar regional density approach.
• U.S. Radiology Specialists: National outpatient imaging platform (subsidiary of Lucid Health) operating freestanding diagnostic imaging centers across multiple states with comparable modality mix and referrer-driven business model.
• SimonMed Imaging: One of the largest independent outpatient diagnostic imaging networks in the U.S., offering MRI, CT, mammography, ultrasound, and PET/CT on a fee-for-service basis. Closest direct competitor to Rolling Oaks Radiology's modality mix and DTC/referral GTM.
• Akumin: Multi-state outpatient imaging center operator providing MRI, CT, PET/CT, X-ray, ultrasound and mammography on a fee-for-service model. Direct competitor on modality breadth and multi-site ambulatory strategy.
• Center for Diagnostic Imaging (CDI): Outpatient imaging network offering MRI, CT, mammography and interventional radiology across multiple U.S. markets. Comparable regional-center operating model with same modality portfolio.
• Rayus Radiology: National outpatient diagnostic imaging network (formerly Cahaba Imaging) operating freestanding centers with MRI, CT, mammography and interventional radiology. Direct competitor on modality breadth and multi-state freestanding-center strategy.
• Touchstone Medical Imaging: Outpatient diagnostic imaging operator running freestanding centers with MRI, CT, ultrasound, X-ray and mammography services, with comparable fee-for-service model and referrer relationships.

Broad incumbents

• HCA Healthcare: Large hospital and ambulatory services operator with embedded imaging capabilities (Sarah Cannon, etc.). Broad incumbent in adjacent ambulatory care with overlapping imaging service lines but as part of a much larger portfolio.
• RadNet Inc. Parent company and largest U.S. outpatient imaging operator with 399 centers across 8 states. Directly comparable business model (fee-for-service diagnostic imaging) and provides the umbrella strategy and economics governing Rolling Oaks Radiology.

Emerging players

• Outpatient Imaging Affiliates (OIA): Developer and operator of freestanding outpatient imaging centers in partnership with health systems. Comparable ambulatory imaging-center operating model but smaller scale and partnership-led footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Customer concentration

• Xx.com/grossmanimagin1
• Facebookfacebook.com/RadNetImaging
• LinkedInlinkedin.com/company/grossman-imaging-ctr

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Grossman Imaging Centers