Physician Profile
Greg B. Marrinan, MD
Unclaimed ProfileAbout Dr. Marrinan
Greg B. Marrinan, MD practices diagnostic radiology in Shelton, CT. Greg is a 1997 graduate of Albert Einstein College of Medicine of Yeshiva University. According to Medicare claims data, Greg cared for 1,749 Medicare patients across 11,777 services. The services billed most often include injection, gadobutrol, 0.1 ml, low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, and x-ray of chest, 1 view.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (203) 696-6125
- Email not available
Practice Locations
1 CORPORATE DR STE 325
Shelton, CT 06484
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
- Uterine fibroids
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
- Water On Baby's Brain
Breast
- Breast lump or mass
- Dense Breast Tissue
Chest & Heart
- Blood Clot in Lung
- Suspicious Lung Spot
General
- Swollen Lymph Nodes
Heart & blood vessels
- Aortic aneurysm
Joint & bone
- Hip labral tear
- Shoulder Labrum Tear
- Stress fracture
- Tennis elbow
- Torn Achilles tendon
- Torn ACL
Liver & digestion
- Acute pancreatitis
- Bowel obstruction
- Crohn's disease
- Fatty liver disease
Lungs & breathing
- Community-acquired pneumonia
Men's health
- Varicocele
Neck & Thyroid
- Thyroid nodule
Nerve pain
- Carpal tunnel
Pelvic health
- Chronic pelvic pain
Spine
- Back pain
- Cervical radiculopathy
- Herniated disc
- Neck pain
- Sciatica
Spine & back
- Scoliosis
- Spinal stenosis
Vascular
- Carotid Artery Blockage
- Deep vein thrombosis
Women's health
- Endometriosis
- Pelvic Congestion Syndrome
Procedures & services
Abdominal imaging
- Abdominal X-Ray
Biopsies
- Image-Guided Needle Biopsy
- Thyroid Nodule Biopsy
Bone Density
- Bone Density Scan Referral
Breast Imaging
- Breast MRI
- Breast Ultrasound
- Mammogram
- Ultrasound-Guided Breast Biopsy
CT Scan
- Abdominal CT Scan
- Chest CT Scan
- Emergency CT scan
- Head CT Scan
- Heart Calcium Scan
- Sinus CT Scan
Digestive & liver
- Liver elastography
- Virtual Colonoscopy
Fluoroscopy
- Barium Swallow
General imaging
- Fluoroscopy
- Soft tissue ultrasound
Heart & blood vessels
- Cardiac magnetic resonance imaging
- CT angiogram
- MR Angiogram
Joint & bone
- Hip X-Ray
- Joint injection with dye
- Knee X-Ray
- Wrist MRI
MRI
- Ankle MRI
- Back MRI
- Brain MRI
- Hip MRI
- Knee MRI
- MRI Scan
- Neck MRI
- Open MRI
- Prostate MRI
- Shoulder MRI
Nuclear Medicine
- PET Scan
Pelvic imaging
- Pelvic CT Scan
- Pelvic MRI
Screening & Prevention
- Full Body Scan
- Low-Dose Lung CT
Spine & back
- Spine CT Scan
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
- Kidney ultrasound
Women's health
- Hysterosalpingogram consultation
X-Ray
- Chest X-Ray
- Emergency X-ray
- Spine X-Ray
Procedures Most Often Billed to Medicare
11,777 services · 1,749 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
514 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
114 | More often than most peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
104 | Less often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
95 | As often as other peers in Diagnostic Radiology |
| Mri scan of leg joint without contrast | Imaging | 73721 |
86 | As often as other peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
86 | More often than most peers in Diagnostic Radiology |
| Mri scan of abdomen before and after contrast | Imaging | 74183 |
72 | As often as other peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
62 | As often as other peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
52 | As often as other peers in Diagnostic Radiology |
| X-ray of pelvis, 1-2 views | Imaging | 72170 |
49 | More often than most peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other radiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 25 related providers in 4 groups
Trained at Albert Einstein College of Medicine of Yeshiva University 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Albert Einstein College of Medicine of Yeshiva University 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in CT who bill this service to Medicare most often.
Common questions
What does Dr. Marrinan specialize in?
Dr. Marrinan is a radiologist in Shelton, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Dr. Marrinan located?
Dr. Marrinan is listed at 1 Corporate Dr Ste 325, Shelton, CT 06484. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Marrinan's phone number?
The number on file is (203) 696-6125. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marrinan's NPI number?
Dr. Marrinan's National Provider Identifier is 1942295506. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Marrinan go to medical school?
Dr. Marrinan attended Albert Einstein College of Medicine of Yeshiva University, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marrinan been practicing?
Dr. Marrinan has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Marrinan do most often?
According to Medicare billing data, Dr. Marrinan performs imaging including x-ray of chest, 1 view and x-ray of chest, 2 views; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marrinan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marrinan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.