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SAIF HAQ SIDDIQI M.D.
NPI 1376579433
Radiology - Diagnostic Radiology in Santa Ana, CA

Active since June 23, 2006PECOS Enrolled
1100 N TUSTIN AVE, SANTA ANA, CA 92705(714) 953-3390(714) 835-3287 Get Directions Write a Review

NPPES record last updated: July 20, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Saif Haq Siddiqi M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SAIF HAQ SIDDIQI M.D. (NPI 1376579433) is an individual diagnostic radiology provider in Santa Ana, California, licensed in California (A78843) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (1995).

NPPES Registry Identity

NPI1376579433
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameSAIF HAQ SIDDIQICredential: M.D.
Location Address1100 N TUSTIN AVESanta Ana, CA 92705-3509
Mailing Address2618 San Miguel Dr # 106Newport Beach, CA 92660-5437 · (714) 425-5937 · Fax (714) 953-3670
Phone(714) 953-3390
Fax(714) 835-3287
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 1995
Enumeration DateJune 23, 2006
Last NPPES UpdateJuly 20, 2015
✔ NPI 1376579433 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in CA · A78843
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Also ListedRadiology · Body ImagingTaxonomy 2085B0100X · License A78843 (CA)
Also ListedRadiology · Diagnostic UltrasoundTaxonomy 2085U0001X · License A78843 (CA)
1100 N TUSTIN AVE, Santa Ana, CA 92705
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINH71471
Medicare ID-Type UnspecifiedWA78843
Medicaid00A788430CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Saif Haq Siddiqi M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2961301429
PECOS Enrollment IDI20051115000733, I20260312001762
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

35

Medicare enrollment records show Saif Siddiqi reassigns Medicare billing to 35 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fullerton Radiology Medical Group, Inc
7.6 mi
Diagnostic Radiology
5528 E LA PALMA AVE STE 4A
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 95 clinicians in this Medicare group
NPI 1861451858 (714) 993-2000
Newport Diagnostic Radiology, Inc
9.8 mi
Diagnostic Radiology
1605 AVOCADO AVE
Newport Beach, CA 92660
  • Reassigned Medicare billing, California enrollment
  • 21 clinicians in this Medicare group
NPI 1134345473 (949) 760-3025
Los Alamitos Radiology Group Inc
14 mi
Diagnostic Radiology
3751 KATELLA AVE
Los Alamitos, CA 90720
  • Reassigned Medicare billing, California enrollment
  • 47 clinicians in this Medicare group
NPI 1427005024 (562) 799-3294
City Of Hope Medical Foundation
27 mi
Hematology & Oncology
1500 DUARTE RD
Duarte, CA 91010
  • Reassigned Medicare billing, California enrollment
  • 1,335 clinicians in this Medicare group
NPI 1871886366 (626) 256-4673
Kc Tan, M.D. Medical Corporation
27 mi
Neuroradiology
525 N GARFIELD AVE
Monterey Park, CA 91754
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Kc Tan MD Medical Corporation
  • 74 clinicians in this Medicare group
NPI 1215394036 (626) 522-6030
Arcadia Radiology Medical Group A Professional Corporation
29 mi
Diagnostic Radiology
300 W HUNTINGTON DR
Arcadia, CA 91007
  • Reassigned Medicare billing, California enrollment
  • 22 clinicians in this Medicare group
NPI 1841228764 (626) 289-5454
Radiology Medical Group Of Wmmc
30 mi
Diagnostic Radiology
1720 E CESAR E CHAVEZ AVE
Los Angeles, CA 90033
  • Reassigned Medicare billing, California enrollment
  • 53 clinicians in this Medicare group
NPI 1831123868 (626) 795-1610
Usc Care Medical Group, Inc
30 mi
General Practice
1520 SAN PABLO ST
Los Angeles, CA 90033
  • Reassigned Medicare billing, California enrollment
  • 2,445 clinicians in this Medicare group
NPI 1902846306 (323) 442-5955
Los Angeles Radiology Medical Associates, Inc.
36 mi
Diagnostic Radiology
1509 WILSON TERRACE
Glendale, CA 91206
  • Reassigned Medicare billing, California enrollment
  • 53 clinicians in this Medicare group
NPI 1366525487 (818) 409-8000
Glendale Adventist Medical Center
36 mi
Psychiatric Unit
1509 WILSON TER
Glendale, CA 91206
  • Reassigned Medicare billing, California enrollment
  • 164 clinicians in this Medicare group
NPI 1336138403 (818) 409-8000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 47

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
2,158 services1,912 patients
Ct scan head or brain without contrast 70450
A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.
683 services669 patients
Ct scan of abdomen and pelvis with contrast 74177
A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.
287 services286 patients
Ct scan of abdomen and pelvis without contrast 74176
A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.
243 services238 patients
X-ray of abdomen, 1 view 74018
An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.
201 services186 patients
Ct scan of upper spine without contrast 72125
A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.
126 services126 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques
Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…
100%84 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NABIL A PHILLIPS M.D.
Internal Medicine (Hematology & Oncology)
1100 N TUSTIN AVE, SUITE A
SANTA ANA, CA 92705
Orange County (714) 542-9100
DR. CHRISTINE P OH D.D.S.
Dentist (General Practice)
1100 N TUSTIN AVE, SUITE C
SANTA ANA, CA 92705
Orange County (714) 543-9762
MICHELE AMIRKHAN MD INC
Family Medicine
1100 N TUSTIN AVE, SUITE F
SANTA ANA, CA 92705
Orange County (714) 667-7922
DAVID LEONARD RODIBAUGH M.D.
Radiology (Diagnostic Radiology)
1100 N TUSTIN AVE
SANTA ANA, CA 92705
Orange County (714) 835-6055
NABIL PHILLIPS MD INC
Internal Medicine (Hematology & Oncology)
1100 N TUSTIN AVE, SUITE A
SANTA ANA, CA 92705
Orange County (714) 542-9100
PATRICIA KAY KINCAID M.D.
Radiology (Diagnostic Radiology)
1100 N TUSTIN AVE
SANTA ANA, CA 92705
Orange County (714) 835-6055
MARK GEOFFERY STEIN M.D.
Radiology (Diagnostic Radiology)
1100 N TUSTIN AVE, BLDG. A
SANTA ANA, CA 92705
Orange County (714) 835-6055
SAMUEL L KIPPER M.D.
Radiology (Nuclear Radiology)
1100 N TUSTIN AVE, SUITE A
SANTA ANA, CA 92705
Orange County (714) 835-6055

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Saif Siddiqi's NPI number?

The NPI number for Saif Siddiqi is 1376579433. It was assigned to this individual provider in the NPPES registry on June 23, 2006.

Where is Saif Siddiqi located?

Saif Siddiqi practices at 1100 N Tustin Ave, Santa Ana, CA 92705. The listed phone number is (714) 953-3390.

What is Saif Siddiqi's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Saif Siddiqi enrolled in Medicare?

Yes. Saif Siddiqi is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Saif Siddiqi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Saif Siddiqi reassigns Medicare benefits to 35 organizations: Fullerton Radiology Medical Group, Inc (Anaheim, CA), Newport Diagnostic Radiology, Inc (Newport Beach, CA), Los Alamitos Radiology Group Inc (Los Alamitos, CA), City Of Hope Medical Foundation (Duarte, CA), Kc Tan, M.D. Medical Corporation (Monterey Park, CA) and 30 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Saif Siddiqi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Saif Siddiqi was last updated on July 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.