NPPES file of Aug 9, 2026

Joseph Marshall, M.D.

Diagnostic Radiology Physician · Tracy, CA

Joseph Marshall, M.D. is a diagnostic radiology physician with a practice address in Tracy, California, and NPI 1750341483, issued on Mar 25, 2006. Check the license (California G67457, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1750341483
Name
Joseph Marshall
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
G67457 CA
34673 IA
Self-reported in NPPES; status is on the state search
Practice location
1530 Bessie Ave, Tracy, CA 95376
Phone
(209) 833-2393
Enumerated
Mar 25, 2006
Record last updated
Aug 21, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicaid ID
0264390 IA
Medicare enrollment
Enrolled (PECOS I20130812000302); accepts Medicare assignment
Medical or professional school
University Of Southern California Keck School Of Medicine, 1988
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1530 Bessie Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Robert Acosta, D.O.Family Medicine Physician1003853649
  2. Garth Harley, MDDiagnostic Radiology Physician1194715078
  3. Aibar Huatuco, M.D.Nephrology Physician1245223932
  4. Sam Kokoris, MDDiagnostic Radiology Physician1578553335
  5. Robert Lim, M.D.Diagnostic Radiology Physician1669430518
  6. Athanasios Magimbi, MDPain Medicine (Anesthesiology) Physician1851470959

Verify Joseph Marshall in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G67457    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 90.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score85.1
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. Henry County Health Center IncMarina, CA
  2. Southeast Iowa Regional Medical Center IncMarina, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

10 diagnostic radiology physician records list a practice address in Tracy

They are 10 of the 1,864 NPPES records with a practice address in Tracy, and 4,500 diagnostic radiology physician records in California.

All 10 in Tracy → All 4,500 in California → Every provider in Tracy →

Other diagnostic radiology physician records in California

  1. Jason Aaronson, MDLos Angeles, CA1023145463
  2. Brianna Abadie, M.D.Van Nuys, CA1861811291
  3. Kenric Aban, M.D.Oceanside, CA1336218023
  4. Pablo Abbona, MDLos Angeles, CA1689856239
  5. Rashed AbdelaalRiverside, CA1518726090
  6. Ahmed Abdelhalim, MDRiverside, CA1275162927
  7. Fatemeh Abdollahi Mofakham, MDLos Angeles, CA1659652915
  8. Bennett Abe, MDVisalia, CA1184731283
  9. Stephen Abedon, M.D.Daly City, CA1689628687
  10. Richard Abello, M.D.La Jolla, CA1245205996

Common questions

What is Joseph Marshall, M.D.'s NPI number?

Joseph Marshall, M.D.'s National Provider Identifier (NPI) is 1750341483, issued on Mar 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joseph Marshall, M.D. located?

The NPPES record lists a practice address at 1530 Bessie Ave, Tracy, CA, 95376. Phone: (209) 833-2393. Providers update this record themselves, so call before visiting.

How can I verify Joseph Marshall, M.D.'s license?

NPPES lists California license number G67457, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Joseph Marshall, M.D.'s MIPS final score?

The 2023 MIPS final score is 90.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.