NPPES file of Aug 9, 2026

Steven Reed Plimpton, MD, MS

Diagnostic Radiology Physician · Los Angeles, CA

Steven Reed Plimpton, MD, MS is a diagnostic radiology physician with a practice address in Los Angeles, California, and NPI 1841731254, issued on Mar 17, 2017. Check the license (California A158426, 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
1841731254
Name
Steven Reed Plimpton
Credential
MD, MS
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
A158426 CA
Self-reported in NPPES; status is on the state search
Practice location
757 Westwood Plz Ste 1638, Los Angeles, CA 90095
Phone
(310) 267-8758
Enumerated
Mar 17, 2017
Record last updated
Jun 25, 2025
Fax
(310) 267-2059
Medicare enrollment
Enrolled (PECOS I20200409001190); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 2017
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 757 Westwood Plz Ste 1638

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

  1. Bashir Akhavan Tafti, M.DDiagnostic Radiology Physician1154556306
  2. Lourdes AlanisDiagnostic Radiology Physician1699118281
  3. Phoebe AnnDiagnostic Radiology Physician1760847909
  4. Lionel Bure, M.D.Specialist1306379912
  5. James ChalfantDiagnostic Radiology Physician1447679105
  6. Tiffany Chan, M.D.Diagnostic Radiology Physician1457796518

Verify Steven Reed Plimpton in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A158426
    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): 73.4 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 score74.8
  2. Costout of 100 · 30%57.5
  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 one group practice

  1. Ucla Radiology Medical GroupLos Angeles, CA

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

Steven Reed Plimpton among 4,500 diagnostic radiology physician records in California

Steven Reed Plimpton, MD, MS is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 85% of them.

  • NPI issued2017 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2017 · median 2004 among the 3,130 with a school on file
  • Record last updated2025 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in California

There are 4,500 diagnostic radiology physician records in California.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Denise Aberle, MDLos Angeles, CA 900951053361501
  2. Azita Behrashi, MDLos Angeles, CA 900951285688010
  3. Maria Boechat, MDLos Angeles, CA 900951659320406
  4. Livia Bohman, MDLos Angeles, CA 900951912956756
  5. Deborah Bolton, NPLos Angeles, CA 900951033166392
  6. Nanette Debruhl, MDLos Angeles, CA 900951689625170
  7. Michael Fischer, M.D.Los Angeles, CA 900951740239060
  8. Richard Gold, MDLos Angeles, CA 900951588614655

Common questions

What is Steven Reed Plimpton, MD, MS's NPI number?

Steven Reed Plimpton, MD, MS's National Provider Identifier (NPI) is 1841731254, issued on Mar 17, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Steven Reed Plimpton, MD, MS located?

The NPPES record lists a practice address at 757 Westwood Plz Ste 1638, Los Angeles, CA, 90095. Phone: (310) 267-8758. Providers update this record themselves, so call before visiting.

How can I verify Steven Reed Plimpton, MD, MS's license?

NPPES lists California license number A158426, 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 Steven Reed Plimpton, MD, MS's MIPS final score?

The 2023 MIPS final score is 73.4 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.

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.