Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Joseph Marshall, MD

Individual provider Diagnostic Radiology Physician · NPI 1750341483

Joseph Marshall, MD practises Diagnostic Radiology in Tracy, California. Graduated from University of Southern California Keck School of Medicine in 1988, 38 years ago. Practices with Southeast Iowa Regional Medical Center Inc, a 258-clinician group and accepts Medicare assignment. Licensed in California and Iowa.

Years since qualifying
38
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA, IA
In the registry since
2006
Specialties on file
2
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

1530 Bessie Ave Ste 108
Tracy, CA 95376-3080 Not confirmed with CMS for 12 years — call before visiting
Phone: (209) 833-2393
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence G67457 (CA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 34673 (IA)

Record details

NPI number1750341483
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 25, 2006
Last updated in NPPESAugust 21, 2014

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Southeast Iowa Regional Medical Center Inc — 258 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients3,549
Services billed 5,523 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Southeast Iowa Regional Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 258 clinicians in the practice; 12 are shown here.

Other providers in Tracy