NPPES file of Aug 9, 2026

Martin W. Wieler, M.D.

Diagnostic Radiology Physician · Santa Ana, CA

Martin W. Wieler, M.D. is a diagnostic radiology physician with a practice address in Santa Ana, California, and NPI 1689610552, issued on Jun 21, 2006. Check the license (California G30123, 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
1689610552
Name
Martin W. Wieler
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
G30123 CA
Self-reported in NPPES; status is on the state search
Practice location
1220 Hemlock Way, Santa Ana, CA 92707
Phone
(714) 545-9441
Enumerated
Jun 21, 2006
Record last updated
Oct 12, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(714) 545-9486
Medicare enrollment
Enrolled (PECOS I20040409000429); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 1973
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 1220 Hemlock Way

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

  1. Carlo Biscaro, MDOrthopaedic Surgery Physician1265400550
  2. Jennifer Giang, D.M.D.General Practice Dentistry1831248061
  3. Ahmad Hajj, MDOrthopaedic Surgery Physician1043287345
  4. Ferdous Kazemi, MDPediatrics Physician1629184536
  5. Mansoor Mosley, MDSpecialist1770675357
  6. Huu Nguyen, M.D.Internal Medicine Physician1396922068

Verify Martin W. Wieler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G30123
    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 MIPS final score for 2023 (Medicare payment program): 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Martin W. Wieler among 4,500 diagnostic radiology physician records in California

Martin W. Wieler, M.D. 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 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 52% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1973 · median 2004 among the 3,130 with a school on file
  • Record last updated2007 · 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. John Belville, M.D.Fountain Valley, CA 927081114978277
  2. Anita Boorman, DOFountain Valley, CA 927081720083447
  3. David Cassidy, M.D.Fountain Valley, CA 927081376591594
  4. Ronald Frug, MDFountain Valley, CA 927081285722488
  5. William Grandolfo, M.D.Fountain Valley, CA 927081649596479
  6. Joy Johnson, MDSanta Ana, CA 927061518084763
  7. David Mai, M.D.Fountain Valley, CA 927081962589242
  8. Richard Reitherman, MEDICAL DOCTORFountain Valley, CA 927081528058351

Common questions

What is Martin W. Wieler, M.D.'s NPI number?

Martin W. Wieler, M.D.'s National Provider Identifier (NPI) is 1689610552, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Martin W. Wieler, M.D. located?

The NPPES record lists a practice address at 1220 Hemlock Way, Santa Ana, CA, 92707. Phone: (714) 545-9441. Providers update this record themselves, so call before visiting.

How can I verify Martin W. Wieler, M.D.'s license?

NPPES lists California license number G30123, 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 Martin W. Wieler, M.D.'s MIPS final score?

The 2023 MIPS final score is 0 of 100. 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.