JOHN H. NGUYEN MD
NPI 1659448538
Radiology - Body Imaging in Bellflower, CA

Active since November 29, 2006PECOS EnrolledAccepts Medicare Assignment
9400 ROSECRANS AVE, BELLFLOWER, CA 90706(562) 461-3000 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About John H. Nguyen Md NPPES

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

JOHN H. NGUYEN MD (NPI 1659448538) is an individual body imaging provider in Bellflower, California, licensed in California (G76445) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (1991).

NPPES Registry Identity

NPI1659448538
Entity TypeIndividualMale
Primary Taxonomy2085B0100X
Provider Legal NameJOHN H. NGUYENCredential: MD
Location Address9400 ROSECRANS AVEBellflower, CA 90706-2246
Mailing Address9400 Rosecrans AveBellflower, CA 90706-2246 · (562) 461-3000
Sole ProprietorNo
Medical School CMSUniversity Of Kansas School Of Med (kc/wich/sal)Graduated 1991
Enumeration DateNovember 29, 2006
Last NPPES UpdateNovember 29, 2021
✔ NPI 1659448538 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Body ImagingAllopathic & Osteopathic Physicians
Taxonomy Code2085B0100X
License✔ Licensed in CA · G76445
Definition
A Radiology doctor of Osteopathy that specializes in Body Imaging.
9400 ROSECRANS AVE, Bellflower, CA 90706

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

John H. Nguyen Md 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 ID9234298092
PECOS Enrollment IDI20081107000495
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 Reassignment

Medicare enrollment records show John Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Health Maintenance Organization
9400 ROSECRANS AVE
Bellflower, CA 90706
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1396287082 (California)
  • 13,921 clinicians in this Medicare group

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 5

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.
69 services63 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.
39 services37 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.
22 services22 patients
Ultrasound study of one arm or leg veins with compression and maneuvers 93971
This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.
22 services21 patients
Limited ultrasound scan of abdomen 76705
A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.
20 services20 patients

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.

Pharmacist
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Specialist
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Otolaryngology (Plastic Surgery within the Head & Neck)
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Internal Medicine
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Optometrist
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Podiatrist (Foot & Ankle Surgery)
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Surgery (Vascular Surgery)
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Neuromusculoskeletal Medicine & OMM
9400 ROSECRANS AVE
BELLFLOWER, CA 90706

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 John Nguyen's NPI number?

The NPI number for John Nguyen is 1659448538. It was assigned to this individual provider in the NPPES registry on November 29, 2006.

Where is John Nguyen located?

John Nguyen practices at 9400 Rosecrans Ave, Bellflower, CA 90706. The listed phone number is (562) 461-3000.

What is John Nguyen's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Body Imaging, with taxonomy code 2085B0100X.

Is John Nguyen enrolled in Medicare?

Yes. John Nguyen 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 organization bills Medicare for John Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Nguyen reassigns Medicare benefits to Southern California Permanente Medical Group (Bellflower, CA). The 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 John Nguyen'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 John Nguyen was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.