NPPES file of Aug 9, 2026

Saif Haq Siddiqi, M.D.

Diagnostic Radiology Physician · Santa Ana, CA

Saif Haq Siddiqi, M.D. is a diagnostic radiology physician with a practice address in Santa Ana, California, and NPI 1376579433, issued on Jun 23, 2006. Check the license (California A78843, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1376579433
Name
Saif Haq Siddiqi
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
A78843 CA
Self-reported in NPPES; status is on the state search
Practice location
1100 N Tustin Ave, Santa Ana, CA 92705
Phone
(714) 953-3390
Enumerated
Jun 23, 2006
Record last updated
Jul 20, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(714) 835-3287
Medicaid ID
00A788430 CA
Medicare enrollment
Enrolled (PECOS I20051115000733); may accept Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 1995
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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8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →

Also registered at 1100 N Tustin Ave

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

  1. Mojgan Amirkhan, M.D.Emergency Medicine Physician1508936907
  2. Michael Black, M.D.Neuroradiology Physician1780620955
  3. Joseph Brugman, M.D.Diagnostic Radiology Physician1790727188
  4. Khurshed Dastur, MDDiagnostic Radiology Physician1740287887
  5. Laszlo Kaveggia, M.D.Diagnostic Radiology Physician1508808924
  6. Patricia Kincaid, M.D.Diagnostic Radiology Physician1134163165

Verify Saif Haq Siddiqi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A78843    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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16+ hospitals and group practices

  1. Glendale Adventist Medical CenterGlendale, CA · Acute Care Hospitals4 of 5 stars
  2. Adventist Health Mendocino CoastFort Bragg, CA · Critical Access Hospitals3 of 5 stars
  3. Adventist Health TulareTulare, CA · Acute Care Hospitals3 of 5 stars
  4. Adventist Health DelanoDelano, CA · Acute Care Hospitals2 of 5 stars
  5. Advanced Radiology And Interventional Associates IncStockton, CA
  6. Adventist Health Clearlake Hospital Inc.Clearlake, CA
  7. Adventist Health Medical Center TehachapiTehachapi, CA
  8. Arcadia Radiology Medical Group A Professional CorporationNewport Coast, CA
  9. Hanford Community HospitalHanford, CA
  10. Los Alamitos Radiology Group IncIrvine, CA
  11. Los Angeles Radiology Medical Associates, Inc.Glendale, CA
  12. Mother Lode Diagnostic Imaging IncCrescent City, CA
  13. Radiologica IncSan Andreas, CA
  14. Radiology Medical Group OF WmmcLos Angeles, CA
  15. Rideout Memorial HospitalCorona Del Mar, CA
  16. San Joaquin Community HospitalBakersfield, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Saif Haq Siddiqi among 4,500 diagnostic radiology physician records in California

Saif Haq Siddiqi, 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
  • Graduated1995 · median 2004 among the 3,130 with a school on file
  • Record last updated2015 · 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.

All 4,500 in California → Every provider in Santa Ana → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Joseph Brugman, M.D.Santa Ana, CA 927051790727188
  2. Khurshed Dastur, MDSanta Ana, CA 927051740287887
  3. Laszlo Kaveggia, M.D.Santa Ana, CA 927051508808924
  4. Patricia Kincaid, M.D.Santa Ana, CA 927051134163165
  5. Jessica Langer, MDSanta Ana, CA 927051972893923
  6. Hemlata Lepkowski, MDTustin, CA 927051114038338
  7. Christina Ma, M.D.Santa Ana, CA 927051891052742
  8. Duke Nguyen, M.D.Santa Ana, CA 927051700822962

Common questions

What is Saif Haq Siddiqi, M.D.'s NPI number?

Saif Haq Siddiqi, M.D.'s National Provider Identifier (NPI) is 1376579433, issued on Jun 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Saif Haq Siddiqi, M.D. located?

The NPPES record lists a practice address at 1100 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 953-3390. Providers update this record themselves, so call before visiting.

How can I verify Saif Haq Siddiqi, M.D.'s license?

NPPES lists California license number A78843, 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.

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.