What San Diego Imaging does

San Diego Imaging (SDI) Medical Group is a private diagnostic and interventional radiology practice headquartered in San Diego, California. Founded in 1978, the practice has provided professional radiology services to San Diego County for over four decades. SDI operates four outpatient imaging centers — in Chula Vista, Kearny Mesa, Escondido (with Palomar Health), and Oceanside (with Tri-City Medical Center) — and delivers professional diagnostic and interventional radiology services at five to eight area hospitals, including Rady Children's Hospital, Sharp Chula Vista Medical Center, Sharp Coronado Hospital, Sharp Mary Birch Hospital, and Sharp Memorial Hospital. SDI serves three constituencies: individual patients seeking diagnostic or interventional imaging, referring physicians who rely on SDI for subspecialty interpretation, and hospital partners that contract SDI radiologists for coverage.

The practice offers a comprehensive diagnostic and interventional radiology portfolio: MRI and MR Angiography, CT and CT Angiography, PET/CT, digital mammography with Computer Aided Detection (CAD), breast ultrasound with image-guided breast biopsy, general and vascular ultrasound, digital X-ray, DEXA bone density, low-dose CT lung cancer screening, coronary CT angiography and calcium scoring, CT virtual colonoscopy, vein treatment (endovenous laser therapy and sclerotherapy), and image-guided interventional procedures (image-guided biopsy, paracentesis/thoracentesis, vascular access, joint and spinal injections). Underlying technology combines conventional cross-sectional and projection imaging platforms with EPIC and Sharp Link electronic health record integration, giving Sharp-affiliated and non-Sharp referring providers electronic access to reports, images, CPT-code-driven ordering, and authorization submission. CAD operates as a second-reader layer on radiologist mammography interpretation.

SDI runs a fee-for-service revenue model with two parallel streams: insurance billing under contracts with major commercial and government carriers (Aetna, Blue Cross, Blue Shield, Cigna, Medicare, Medi-Cal, Sharp Health Plan), and a published Cash Fee Schedule for self-pay patients covering modalities from screening mammograms ($140 cash) and MRI ($480–$560 cash) through PET/CT ($1,875 cash) and interventional procedures such as endovenous laser treatment ($2,700). Go-to-market is referral-driven rather than direct-to-consumer: sales-led through referring physicians, with channel-partnership leverage anchored by the Sharp HealthCare relationship and supplemented by the Palomar Health and Tri-City Medical Center partnerships. The practice is led by President & CEO Dr. Norman C. Chen (joined 2002, CEO since 2016), with Practice Administrator Kaite Youngs, PA-C, and is independently owned with no identified external private equity or institutional investment.

Name

San Diego Imaging

Legal name

San Diego Imaging

Website

https://sdimaging.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

101–250 employees

Short description

San Diego Imaging is a private diagnostic and interventional radiology practice serving San Diego County through four outpatient imaging centers and multiple hospital partnerships, offering MRI, CT, PET/CT, ultrasound, mammography, and image-guided procedures on a fee-for-service basis.

Ownership category

akta.pro rank

Product category

Diagnostic and Interventional Radiology Services

NAICS

Diagnostic Imaging Centers (621512)

SIC

Services-Specialty Outpatient Facilities, Nec (8093), Services-Offices & Clinics Of Doctors Of Medicine (8011)

akta.pro primary industry

Women’s Imaging & Breast Health Centers (HLAFAJAJ)

akta.pro secondary industry

Non-Invasive Cardiac Imaging (Echo/CT/MRI/Nuclear) (HLAKABAE)

Keywords

• Diagnostic radiology services
• Interventional radiology
• Medical imaging
• Outpatient imaging centers
• Women's breast imaging

Headquarters

HQ city

San Diego

HQ country

United States

HQ region

North America

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Diagnostic Imaging Services: Fee-for-service medical imaging revenue generated from MRI, CT, PET/CT, Ultrasound, X-Ray, Mammography, and other diagnostic procedures performed at hospital and outpatient settings. Revenue is collected through insurance billing (for insured patients) and direct cash payment (for self-pay patients).
2. Cash Pay / Self-Pay Imaging: Self-pay patients without insurance coverage pay cash prices as outlined in the Cash Fee Schedule. Payment is made in full at time of service.
3. Insurance Contracted Services: San Diego Imaging is contracted with multiple insurance carriers (Aetna, Blue Cross, Blue Shield, Cigna, Medicare, Medi-Cal, Sharp Health Plan, etc.) and submits claims per contractual and plan agreements.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

San Diego Imaging (SDI) Medical Group is a diagnostic and interventional radiology practice providing comprehensive imaging services at area hospitals and outpatient centers in San Diego County. Services include MRI and MR Angiography, CT and CT Angiography, PET/CT, ultrasound, X-ray, women's and breast imaging (digital mammography, breast biopsy, DEXA bone density), vein treatment (endovenous laser, sclerotherapy), and minimally invasive image-guided interventional procedures (biopsy, drainage, vascular access).

Product overview

San Diego Imaging (SDI) Medical Group is a diagnostic and interventional radiology practice offering comprehensive imaging services at four outpatient imaging centers (Chula Vista, Kearny Mesa, Escondido, Oceanside) and five area hospitals. The core service portfolio includes MRI & MR Angiography, CT & CT Angiography, PET/CT Imaging, Women's & Breast Imaging (mammography, breast biopsy, DEXA), Ultrasound, X-Ray, Vein Treatment (ELT, sclerotherapy), and Interventional Radiology procedures (biopsy, drainage, vascular access). SDI operates as a unified radiology group rather than a platform product, with each outpatient center offering subsets of these services. The company also provides specialized modules including Neurological MRI, Joint Imaging, Coronary Calcium Scoring, Coronary CT Angiography, CT Virtual Colonoscopy, and Low-Dose Lung Cancer Screening CT.

Differentiator

Problem solved

Functional benefit

Products and services

• MRI & MR Angiography Magnetic Resonance Imaging (MRI) produces detailed images of organs, tissue, bone, and internal body structures using radiofrequency waves and a powerful magnetic field. MR Angiography (MRA) visualizes major blood vessels in the body. Delivered to patients referred by physicians or self-referred for diagnostic evaluation.
• CT & CT Angiography Computed Tomography (CT) captures detailed images of internal organs, bone, soft tissue, and blood vessels using multiple X-ray pictures from different angles integrated by computer. CT Angiography (CTA) visualizes blood flow in major blood vessels throughout the body.
• PET/CT Imaging PET/CT combines functional information from positron emission tomography (PET) with anatomical information from CT into a single exam, allowing radiologists to view metabolic changes in proper anatomical context for oncology and other diagnostic evaluations.
• Women's & Breast Imaging Comprehensive women's imaging services including Digital Mammography with Computer Aided Detection (CAD), Breast Ultrasound, Ultrasound-Guided Breast Biopsy, and DEXA Bone Density studies for breast cancer screening, diagnosis, and osteoporosis risk assessment.
• Ultrasound Ultrasound examinations use high-frequency sound waves to create real-time moving images of internal structures and organs. Includes general ultrasound, breast ultrasound, OB ultrasound, and venous/vascular ultrasound for diagnostic evaluation.
• X-Ray Radiography (X-ray) provides fast imaging of bones, lungs, and certain soft tissues using X-ray beams absorbed at different rates depending on material density. Offered at all outpatient centers as walk-in service.
• Vein Treatment Minimally invasive treatment for varicose veins including Endovenous Laser Treatment (ELT) using optical fiber and laser technology, and Sclerotherapy injections for smaller varicose veins and spider veins. Performed under ultrasound guidance.
• Interventional Radiology Minimally invasive, image-guided procedures including needle biopsy (abdominal, lymph node, thyroid, soft tissue), paracentesis/thoracentesis drainage, and vascular access for long-term IV needs such as chemotherapy or extended antibiotic treatment.
• Hospital Radiology Services Professional diagnostic and interventional radiology services provided to eight area hospitals in San Diego County including Rady Children's Hospital, Sharp Chula Vista Medical Center, Sharp Coronado Hospital, Sharp Mary Birch Hospital, and Sharp Memorial Hospital.

Quantifiable outcome

• Reports delivered to referring physician within one hour

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature2 records

Partnerships

Nine partnerships are on record, tiered core, flagship and minor.

• Rady Children's HospitalcoreStrategic or Co-development PartnerSan Diego Imaging provides professional diagnostic and interventional radiology services at Rady Children's Hospital. Location: 3020 Children's Way, San Diego, CA 92123. Phone: 858.576.1700.
• Sharp Chula Vista Medical CentercoreStrategic or Co-development PartnerSan Diego Imaging provides professional diagnostic and interventional radiology services at Sharp Chula Vista Medical Center. Location: 751 Medical Center Court, Chula Vista, CA 91911. Phone: 619.502.5800.
• Sharp Coronado HospitalcoreStrategic or Co-development PartnerSan Diego Imaging provides professional diagnostic and interventional radiology services at Sharp Coronado Hospital. Location: 250 Prospect Place, Coronado, CA 92118. Phone: 619.522.3600.
• Sharp Mary Birch HospitalcoreStrategic or Co-development PartnerSan Diego Imaging provides professional diagnostic and interventional radiology services at Sharp Mary Birch Hospital. Location: 3003 Health Center Drive, San Diego. Phone: 858.939.3400.
• Sharp Memorial HospitalcoreStrategic or Co-development PartnerSan Diego Imaging provides professional diagnostic and interventional radiology services at Sharp Memorial Hospital. Location: 7901 Frost Street, San Diego.
• Palomar HealthcoreStrategic or Co-development PartnerPalomar Health is the partner for SDI Escondido location, providing imaging services at 1955 Citracado Parkway, Suite 100, Escondido, CA 92029.
• Tri-City Medical Center (TCMC)coreStrategic or Co-development PartnerTri-City Medical Center (TCMC) is the partner for SDI Oceanside location at 3909 Waring Road, Suite C, Oceanside, CA 92056.
• Sharp HealthCareflagshipStrategic or Co-development PartnerSharp HealthCare is the primary health system partner, with multiple Sharp hospitals hosting SDI radiology services and integration through Sharp App, Sharp Link, and EPIC for patient and provider access.
• Water4Kids InternationalminorOthersCharitable partnership. Rick Padelford, Executive Vice President of San Diego Imaging, has twice traveled to Uganda (2012 and 2014) as a volunteer with Water4Kids International, which drills deep-water wells in East Africa.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• SimonMed Imaging: SimonMed is one of the largest outpatient imaging networks in the US, offering MRI, CT, PET/CT, mammography, ultrasound, X-ray and interventional services across multiple states. Directly comparable to SDI's full-service diagnostic imaging model at much greater scale.
• Akumin: Akumin is a national outpatient imaging operator offering MRI, CT, PET/CT, ultrasound, mammography, and X-ray services across multiple US markets. Comparable to SDI in full-modality outpatient imaging, though Akumin is a much larger, publicly traded platform.
• Outpatient Imaging Affiliates (OIA): Outpatient Imaging Affiliates develops, manages, and operates outpatient imaging centers in partnership with health systems and radiology groups. Comparable in operating outpatient imaging center infrastructure, though OIA is more of a management/development platform.
• RadNet: RadNet is the largest outpatient diagnostic imaging network in the United States with hundreds of centers across multiple states. It is broadly comparable to San Diego Imaging as a multi-modality outpatient imaging operator, though far larger and publicly traded.

Emerging players

• Smart Choice MRI: Smart Choice MRI operates a network of cash-pay MRI centers with transparent flat-rate pricing. Comparable to SDI's published cash fee schedule model, though narrower in modality scope.

Direct peers

• Solis Mammography: Solis Mammography is a specialized breast imaging and women's health network offering mammography, breast ultrasound, biopsy, and bone density services. Comparable to SDI's Women's & Breast Imaging service line, though focused specifically on breast health.
• RAYUS Radiology: RAYUS Radiology (formerly Center for Diagnostic Imaging / CDI) is a national network of subspecialized diagnostic imaging centers offering MRI, CT, PET/CT, mammography, and pain management. Closely comparable to SDI's multi-modality, subspecialty-focused model, though operating across many states.

Regional players

• Wake Radiology: Wake Radiology is a subspecialized outpatient radiology group serving the Raleigh-Durham, NC market with multiple outpatient centers and hospital contracts. Comparable to SDI's private regional multi-modality practice model, though operating on the East Coast.
• Steinberg Diagnostic Medical Imaging: Steinberg Diagnostic Medical Imaging is a multi-modality outpatient imaging group serving the Las Vegas/Henderson market with MRI, CT, PET/CT, mammography, and interventional services. Highly comparable to SDI in size, scope and private-group operating model, though geographically separate.
• Advanced Radiology Services: Advanced Radiology Services is a private subspecialized radiology group serving hospitals and outpatient centers across Michigan. Comparable to SDI in providing professional radiology services to hospital partners plus outpatient imaging.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

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 San Diego Imaging