Registry data as of Aug 27, 2026

Erik Gaensler, MD

Diagnostic Radiology Physician · Walnut Creek, CA

Erik Gaensler, MD is a diagnostic radiology physician with a practice address in Walnut Creek, California, and NPI 1376598474, issued on May 24, 2006. Check the license (California G56651, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1376598474
Name
Erik Gaensler
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
G56651 CA
Self-reported in NPPES; status is on the state search
Practice location
2125 Oak Grove RD, Walnut Creek, CA 94598
Phone
(925) 296-7150
Enumerated
May 24, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2125 Oak Grove RD

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

  1. Richard Baxter, M.D.Diagnostic Radiology Physician1356382956
  2. Robert BinderDiagnostic Radiology Physician1942241559
  3. Kimberly Blumberg, M.DDiagnostic Radiology Physician1316979925
  4. James Branscom, M.D.Diagnostic Radiology Physician1558304451
  5. Less Chafen, M.D.Diagnostic Radiology Physician1336131689
  6. Joseph Chan, M.D.Diagnostic Radiology Physician1043256720

Verify Erik Gaensler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G56651
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

The practice group's Medicare quality score for 2023: 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. Costout of 100 · 30%
  3. Promoting interoperabilityout of 100 · 25%
  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).

Industry payments in 2024: $34,999.72

5 payments, mostly food and beverage; the largest payer was Celltrion, Inc.. The 8,130 providers of this specialty with any payment received $3,224.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Erik Gaensler$34,999.72
  2. Specialty average$3,224.15

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

2 hospital and facility affiliations

  1. Bay Imaging Consultants Medical Group IncOakland, CA
  2. Magnetic Imaging Affiliates LLCOakland, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

103 diagnostic radiology physician records list a Walnut Creek practice address

They are 103 of the 6,170 NPPES records with a Walnut Creek practice address, and 4,131 diagnostic radiology physician records in California.

Other diagnostic radiology physician records in California

  1. Jason Aaronson, MDLos Angeles, CA1023145463
  2. Pablo Abbona, MDLos Angeles, CA1689856239
  3. Rashed AbdelaalRiverside, CA1518726090
  4. Ahmed Abdelhalim, MDRiverside, CA1275162927
  5. Fatemeh Abdollahi Mofakham, MDLos Angeles, CA1659652915
  6. Bennett Abe, MDVisalia, CA1184731283
  7. Stephen Abedon, M.D.Daly City, CA1689628687
  8. Richard Abello, M.D.La Jolla, CA1245205996
  9. Deborah Abelson, M.D.Thousand Oaks, CA1821277252
  10. Denise Aberle, MDLos Angeles, CA1053361501

Common questions

What is Erik Gaensler, MD's NPI number?

Erik Gaensler, MD's National Provider Identifier (NPI) is 1376598474, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Erik Gaensler, MD located?

The NPPES record lists a practice address at 2125 Oak Grove RD, Walnut Creek, CA, 94598. Phone: (925) 296-7150. Providers update this record themselves, so call before visiting.

How can I verify Erik Gaensler, MD's license?

NPPES lists California license number G56651, 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 Erik Gaensler, MD's Medicare quality 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), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.