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JOHN-CHARLES AIONA LOO
NPI 1619972700
Pediatrics - Pediatric Cardiology in Long Beach, CA

Active since June 16, 2005PECOS Enrolled
2801 ATLANTIC AVE, 3RD FLOOR PEDIATRICS, LONG BEACH, CA 90806(562) 933-3350(562) 933-3359 Get Directions Write a Review

NPPES record last updated: December 3, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About John-charles Aiona Loo NPPES

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

JOHN-CHARLES AIONA LOO (NPI 1619972700) is an individual pediatric cardiology provider in Long Beach, California, licensed in California (A67200) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619972700
Entity TypeIndividualMale
Primary Taxonomy2080P0202X
Provider Legal NameJOHN-CHARLES AIONA LOO
Location Address2801 ATLANTIC AVE, 3RD FLOOR PEDIATRICSLong Beach, CA 90806-1701
Mailing Address3080 Bristol St, Ste 600Costa Mesa, CA 92626-3093 · (714) 445-0220 · Fax (714) 445-0245
Phone(562) 933-3350
Fax(562) 933-3359
Sole ProprietorNo
Enumeration DateJune 16, 2005
Last NPPES UpdateDecember 3, 2021
✔ NPI 1619972700 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
License✔ Licensed in CA · A67200
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
2801 ATLANTIC AVE, Long Beach, CA 90806
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John-charles Aiona Loo is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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-charles Loo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
6.4 mi
Health Maintenance Organization
25825 VERMONT AVE
Harbor City, CA 90710
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1598797011 (310) 325-5111

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

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. DAVID C KIM M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-8100
MRS. ELISHA MARIE MARTIN MSN, NP
Nurse Practitioner (Acute Care)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (310) 350-8902
MICHAEL A RAYA MD
Internal Medicine
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
ELIZABETH MARY ZAAROUR
Physician Assistant
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 249-4575
LONG BEACH MEMORIAL MEDICAL
Pharmacy (Community/Retail Pharmacy)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-0330
GLENN LEVINE M.D.
Pediatrics (Pediatric Critical Care Medicine)
2801 ATLANTIC AVE, 3RD FLOOR
LONG BEACH, CA 90806
Los Angeles County (562) 933-8743
DAVID KHOA CAO DO
Internal Medicine
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
RICHARD ERIC SWENSSON MD
Pediatrics (Pediatric Cardiology)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-3350

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-charles Loo's NPI number?

The NPI number for John-charles Loo is 1619972700. It was assigned to this individual provider in the NPPES registry on June 16, 2005.

Where is John-charles Loo located?

John-charles Loo practices at 2801 Atlantic Ave 3rd Floor Pediatrics, Long Beach, CA 90806. The listed phone number is (562) 933-3350.

What is John-charles Loo's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is John-charles Loo enrolled in Medicare?

Yes. John-charles Loo is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John-charles Loo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John-charles Loo reassigns Medicare benefits to Southern California Permanente Medical Group (Harbor City, 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-charles Loo'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-charles Loo was last updated on December 3, 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.