Physician Profile
Unclaimed ProfileAbout MARCUS
Based in Irvine, CA, Ralph Marcus is listed in the NPI registry under diagnostic radiology. Ralph graduated from University of California, San Francisco School of Medicine in 2009.
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
Areas of Expertise
Common questions
What is Dr. Marcus's specialty?
Dr. Marcus is a diagnostic radiology in Irvine, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where can I find Dr. Marcus?
Dr. Marcus is listed at 7 ABERDEEN ST, Irvine, CA 92620. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Marcus?
The number on file is (949) 302-1362. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marcus's NPI number?
Dr. Marcus's National Provider Identifier is 1346566056. 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
What is Dr. Marcus's medical education?
Dr. Marcus attended University of California, San Francisco School of Medicine, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marcus been practising?
Dr. Marcus has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Marcus known for?
According to Medicare billing data, Dr. Marcus performs procedures including drainage of fluid from abdominal cavity using imaging guidance, biopsy and aspiration of bone marrow sample for diagnosis and aspiration of fluid from chest cavity using imaging guidance; reads or performs imaging such as x-ray of chest, 1 view and ct scan head or brain without contrast; provides treatments such as use of a drug to induce depression of consciousness by physician performing a procedure , initial 15 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marcus confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marcus. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (949) 302-1362
- Email not available
Practice Locations
7 ABERDEEN ST
Irvine, CA 92620
Procedures Most Often Billed to Medicare
2,400 services · 2,132 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Drainage of fluid from abdominal cavity using imaging guidance | Procedure | 49083 |
57 |
| Biopsy and aspiration of bone marrow sample for diagnosis | Procedure | 38222 |
27 |
| Aspiration of fluid from chest cavity using imaging guidance | Procedure | 32555 |
27 |
| X-ray of chest, 1 view | Imaging | 71045 |
802 |
| Ct scan head or brain without contrast | Imaging | 70450 |
332 |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
197 |
| X-ray of abdomen, 1 view | Imaging | 74018 |
89 |
| Ct scan of chest without contrast | Imaging | 71250 |
67 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
66 |
| Ultrasonic guidance for blood vessel access | Imaging | 76937 |
60 |
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 diagnostic radiology specialists in Irvine 8
Same specialty, same city.
Trained at University of California, San Francisco School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2009 at University of California, San Francisco School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Drainage of fluid from abdominal cavity using imaging guidance 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.