Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Brian John O'Loughlin, MD

Individual provider Diagnostic Radiology Physician · NPI 1972709087

Brian John O'Loughlin, MD practises Diagnostic Radiology in San Diego, California. Qualified in 2007, 19 years ago. Practices with IHS Radiology Medical Group Inc, a 65-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

150 W Washington St
San Diego, CA 92103-2005
Phone: (619) 295-9729
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 6655 Alvarado Rd, San Diego, CA 92120-5208 — (619) 229-3170

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence A120064 (CA)

Record details

NPI number1972709087
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 25, 2007
Last updated in NPPESApril 12, 2021
Certification dateApril 12, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Ihs Radiology Medical Group Inc — 65 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Varicose vein removal 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients2,284
Services billed 11,150 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at IHS Radiology Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 65 clinicians in the practice; 12 are shown here.

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