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DR. ANDREW CHONG M.D.
NPI 1114451598
General Practice in Downey, CA

Active since April 12, 2017PECOS EnrolledAccepts Medicare Assignment
9333 IMPERIAL HWY, DOWNEY, CA 90242(833) 574-2273 Get Directions Write a Review

NPPES record last updated: December 15, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 15, 2025, Oct 27, 2023, May 15, 2020 and 1 more (4 updates tracked since 2017).

About Dr. Andrew Chong M.d. NPPES

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

DR. ANDREW CHONG M.D. (NPI 1114451598) is an individual general practice provider in Downey, California, licensed in California (A157757) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1114451598
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. ANDREW CHONGCredential: M.D.
Location Address9333 IMPERIAL HWYDowney, CA 90242-2812
Mailing Address9333 Imperial HwyDowney, CA 90242-2812
Phone(833) 574-2273
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateApril 12, 2017
Last NPPES UpdateDecember 15, 20254 updates tracked since enumeration
NPPES CertifiedDecember 15, 2025
✔ NPI 1114451598 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in CA · A157757
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
9333 IMPERIAL HWY, Downey, CA 90242
Open in Google Maps ↗

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. Andrew Chong 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 ID5890065528
PECOS Enrollment IDI20200420003317
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

2

Medicare enrollment records show Andrew Chong reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern California Permanente Medical Group
1.2 mi
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
NPI 1043242555 (562) 461-3000
County Of Los Angeles Auditor Controller
1.8 mi
Physician Assistant
7601 IMPERIAL HWY
Downey, CA 90242
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of Los Angeles
  • 1,939 clinicians in this Medicare group
NPI 1528162229 (562) 803-0124

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 3

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.
44 services41 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.
13 services13 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.
11 services11 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.

BRANDON LUI
Internal Medicine
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-9000
MICHAEL LUHM
Pharmacist
9333 IMPERIAL HWY, 1ST FLOOR OUTPATIENT PHARMACY
DOWNEY, CA 90242
Los Angeles County (562) 657-9421
ALAN H. QUIROZ
Respiratory Therapist, Registered (Neonatal/Pediatrics)
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-3389
DR. KIRAN PANDEY MD
Internal Medicine (Cardiovascular Disease)
9333 IMPERIAL HWY, DOWNEY
DOWNEY, CA 90242
Los Angeles County (877) 608-0044
DR. JOSEPH DANIEL GRUBIC
Emergency Medicine
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-7130
GRACE YAMASAKI PHARM.D.
Pharmacist
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-9422
LINDA CHAO
Pharmacist
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (833) 574-2273
DR. MARSHA ARABA MARTINSON M.D.
Obstetrics & Gynecology
9333 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 657-4043

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 Andrew Chong's NPI number?

The NPI number for Andrew Chong is 1114451598. It was assigned to this individual provider in the NPPES registry on April 12, 2017.

Where is Andrew Chong located?

Andrew Chong practices at 9333 Imperial Hwy, Downey, CA 90242. The listed phone number is (833) 574-2273.

What is Andrew Chong's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Andrew Chong enrolled in Medicare?

Yes. Andrew Chong 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 Andrew Chong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Chong reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Bellflower, CA) and County Of Los Angeles Auditor Controller (Downey, CA). 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 Andrew Chong'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 Andrew Chong was last updated on December 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.