DR. SINDU ALEXANDER M.D.
NPI 1811120371
Radiology - Nuclear Radiology in Orange, CA

Q: What is Sindu Alexander's NPI number?

The NPI number for Sindu Alexander is 1811120371. It was assigned to this individual provider in the NPPES registry on September 1, 2009. The provider is also known as Sindu Sheth.

Q: What is Sindu Alexander's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Nuclear Radiology, with taxonomy code 2085N0904X.

Q: When was this NPI record last updated?

The NPPES record for Sindu Alexander was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.

Active since September 01, 2009PECOS EnrolledAccepts Medicare Assignment

101 THE CITY DR S, ORANGE, CA 92868(714) 880-7812 Get Directions Write a Review

NPPES record last updated: March 9, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Mar 9, 2026, Oct 31, 2022, Jun 8, 2022 and 1 more (4 updates tracked since 2022).

On this page

About Dr. Sindu Alexander M.d. NPPES

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

DR. SINDU ALEXANDER M.D. (NPI 1811120371) is an individual nuclear radiology provider in Orange, California, licensed in California (0000) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS, is affiliated with University Of Utah Hospitals And Clinics, and maintains a secondary practice location in San Diego.

NPPES Registry Identity

NPI1811120371

Entity TypeIndividualFemale

Primary Taxonomy2085N0904X

Provider Legal NameDR. SINDU ALEXANDERCredential: M.D.

Location Address101 THE CITY DR SOrange, CA 92868-3201

Mailing Address200 S Manchester Ave Ste 300Orange, CA 92868-3219 · (714) 456-2986

Phone(714) 880-7812

Sole ProprietorNo

Medical School CMSOtherGraduated 2000

Enumeration DateSeptember 1, 2009

Last NPPES UpdateMarch 9, 20264 updates tracked since enumeration

NPPES CertifiedMarch 9, 2026

✔ NPI 1811120371 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Nuclear RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085N0904X

License✔ Licensed in CA · 0000

Definition

A radiologist who is involved in the analysis and imaging of radionuclides and radiolabeled substances in vitro and in vivo for diagnosis and the administration of radionuclides and radiolabeled substances for the treatment of disease.

101 THE CITY DR S, Orange, CA 92868

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Other Names 1

Former Name (1)Sindu Sheth

Secondary Practice Location 1

Location 1200 W Arbor DrSan Diego, CA 92103-9000 · Phone (800) 926-8273 · Fax (888) 539-8781

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Sindu Alexander M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID143504068

PECOS Enrollment IDI20170221001314, I20251030002261

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

Medicare enrollment records show Sindu Alexander reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Uc Regents

Same address

Diagnostic Radiology

101 THE CITY DR S
Orange, CA 92868

Reassigned Medicare billing, California enrollment
202 clinicians in this Medicare group

NPI 1346298528 (714) 456-8068

Memorialcare Medical Foundation

6.4 mi

Clinic/Center

17360 BROOKHURST ST
Fountain Valley, CA 92708

Reassigned Medicare billing, California enrollment
948 clinicians in this Medicare group

NPI 1205167350 (877) 696-3622

City Of Hope Medical Foundation

24 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

Regents Of The University Of California

82 mi

Diagnostic Radiology

200 W ARBOR DR
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
360 clinicians in this Medicare group

NPI 1558463927 (800) 926-8273

University Of Utah Adult Services

577 mi

Neurology

175 N MEDICAL DR
Salt Lake City, UT 84132

Reassigned Medicare billing, Utah and California enrollments
Also billed through NPI 1598169419 (California)
2,620 clinicians in this Medicare group

NPI 1578967345 (801) 585-7575

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 18

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.

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

296 services296 patients

Dxa bone density measurement of hip, pelvis, spine 77080

281 services281 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

187 services181 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries A9552

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

66 services62 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

56 services54 patients

Dxa bone density measurement of forearm, finger, hand, or foot 77081

A DXA bone density measurement of the forearm, finger, hand, or foot is a non-invasive procedure that uses X-rays to measure the amount of calcium and other minerals in your bones. This test helps to assess the strength of your bones and your risk of fractures.

45 services45 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

40 services40 patients

Nuclear medicine study whole body with ct scan 78816

A Nuclear Medicine Study with a CT Scan is a diagnostic procedure. It uses a small amount of radioactive substance and a CT scan to create detailed images of your body. These images help doctors diagnose, monitor, and treat various conditions.

40 services39 patients

Nuclear medicine study limited area with ct scan 78814

A nuclear medicine study with a limited area CT scan is a diagnostic procedure. A small amount of radioactive substance is injected into your body, which helps create detailed images of a specific area. The CT scan further enhances these images, providing clearer, more precise results.

38 services38 patients

Dxa bone density measurement of forearm, finger, hand, or foot 77081

33 services33 patients

Nuclear medicine study of bone and/or joint whole body 78306

A nuclear medicine study of bone and/or joint whole body involves injecting a small amount of radioactive material into your body. This material travels to your bones and emits energy. A special camera captures this energy, creating images of your bones to help identify any abnormalities.

32 services32 patients

Nuclear medicine study whole body with ct scan 78816

23 services22 patients

Nuclear medicine study of kidney, blood, flow, and function with drug administration 78708

This procedure helps analyze kidney function using a safe radioactive substance and special imaging. The substance is administered through an injection and travels to your kidneys. Images are then taken to assess blood flow and overall kidney function.

19 services19 patients

Nuclear medicine study of lung ventilation and circulation 78582

A nuclear medicine lung ventilation and circulation study uses a safe radioactive material to create images of air and blood flow in your lungs. It helps identify issues like blood clots or lung diseases. You inhale or receive an injection of this material, and a special camera captures the images.

16 services16 patients

Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging 78830

A nuclear medicine study with SPECT and concurrent CT scan is a special imaging test. It uses a small amount of radioactive substance and advanced imaging techniques to create detailed pictures of your internal body structures. It aids in diagnosing and tracking the progress of treatment for various diseases.

16 services16 patients

Nuclear medicine study of lymphatic system 78195

A nuclear medicine study of the lymphatic system involves injecting a safe, radioactive substance into your body. This substance travels through your lymphatic system and helps create images on a special camera. These images can help doctors diagnose conditions related to your immune system.

14 services14 patients

Nuclear medicine study, spect imaging, 1 area or single acquisition, single day imaging 78803

A nuclear medicine study with SPECT involves a safe, small amount of radioactive substance to help visualize body organs. SPECT, or Single Photon Emission Computed Tomography, creates detailed 3D images. This helps doctors diagnose and monitor conditions in a specific body area.

12 services12 patients

Nuclear medicine study of stomach to assess emptying 78264

A nuclear medicine study of the stomach assesses how quickly food leaves the stomach. A safe, radioactive substance is added to a meal. The radiation emitted is tracked, creating images that show the food's progress through the stomach. It's non-invasive and painless.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Utah Hospitals And Clinics

Acute Care Hospitals · Salt Lake City, UT

5/5 CMS rating

OwnershipGovernment - State

CMS Certification Number460009

Location50 North Medical DriveSalt Lake City, UT 84132 · Salt Lake County

Emergency services Birthing friendly

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

Nuclear Medicine: Correlation with Existing Imaging Studies for All Patients Undergoing Bone Scintigraphy

Percentage of final reports for all patients, regardless of age, undergoing bone scintigraphy that include physician documentation of correlation with existing relevant imaging studies (e.g., x-ray, MRI, CT, etc.) that were performed

100%25 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 20

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

DR. ANKIT BHUPENDRA PATEL D.O.

Radiology (Diagnostic Radiology)

101 THE CITY DR S
ORANGE, CA 92868

Orange County (714) 456-5113

DR. LAURA CATHERINE SKOCZYLAS MD

Obstetrics & Gynecology

101 THE CITY DR S, BUILDING 56, DEPARTMENT OF OB/GYN
ORANGE, CA 92868

Orange County (714) 456-8224

MICHAEL CHENG DO

Internal Medicine (Rheumatology)

101 THE CITY DR S
ORANGE, CA 92868

Orange County (714) 456-7110

AESTHETIC AND PLASTIC SURGERY INSTITUTE

Plastic Surgery

101 THE CITY DR S
ORANGE, CA 92868

Orange County (714) 456-2986

JOSEPH VILLARREAL M.D.

Emergency Medicine

101 THE CITY DR S, BUILDING 1A, ROOM 1009
ORANGE, CA 92868

Orange County (714) 456-5239

DEMI TRAN

Psychiatry & Neurology (Neurology)

101 THE CITY DR S, CITY TOWER, SUITE 400
ORANGE, CA 92868

Orange County (171) 456-6693

DR. ISABEL CARLTON CLARK M.D.

Surgery (Trauma Surgery)

101 THE CITY DR S
ORANGE, CA 92868

Orange County (714) 456-7890

DYLAN LUKATO

Emergency Medicine

101 THE CITY DR S
ORANGE, CA 92868

Orange County (415) 218-8041

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 Sindu Alexander's NPI number?

The NPI number for Sindu Alexander is 1811120371. It was assigned to this individual provider in the NPPES registry on September 1, 2009. The provider is also known as Sindu Sheth.

Where is Sindu Alexander located?

Sindu Alexander practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 880-7812.

What is Sindu Alexander's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Nuclear Radiology, with taxonomy code 2085N0904X.

Is Sindu Alexander enrolled in Medicare?

Yes. Sindu Alexander is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Sindu Alexander's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sindu Alexander reassigns Medicare benefits to 5 organizations: Uc Regents (Orange, CA), Memorialcare Medical Foundation (Fountain Valley, CA), City Of Hope Medical Foundation (Duarte, CA), Regents Of The University Of California (San Diego, CA) and University Of Utah Adult Services (Salt Lake City, UT). 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 Sindu Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Sindu Alexander affiliated with any hospitals?

According to CMS data, Sindu Alexander is affiliated with University Of Utah Hospitals And Clinics.

When was this NPI record last updated?

The NPPES record for Sindu Alexander was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.