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CHAU LIEN NGUYEN D.O.
NPI 1861718397
Internal Medicine - Rheumatology in Long Beach, CA

Active since April 08, 2010PECOS EnrolledAccepts Medicare Assignment
2699 ATLANTIC AVE, LONG BEACH, CA 90806(562) 426-3333 Get Directions Write a Review

NPPES record last updated: December 8, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Chau Lien Nguyen D.o. NPPES

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

CHAU LIEN NGUYEN D.O. (NPI 1861718397) is an individual rheumatology provider in Long Beach, California, licensed in California (20A11904) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2010).

NPPES Registry Identity

NPI1861718397
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameCHAU LIEN NGUYENCredential: D.O.
Location Address2699 ATLANTIC AVELong Beach, CA 90806-2710
Mailing Address2699 Atlantic AveLong Beach, CA 90806-2710 · (562) 426-3333
Phone(562) 426-3333
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateApril 8, 2010
Last NPPES UpdateDecember 8, 2021
✔ NPI 1861718397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · 20A11904
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
2699 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 and accepts Medicare assignment

Chau Lien Nguyen D.o. 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 ID7416264585
PECOS Enrollment IDI20150922002534
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 Chau Nguyen 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
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
Healthcare Partners Affiliates Medical Group
17 mi
Internal Medicine
1120 W WASHINGTON BLVD
Los Angeles, CA 90015
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1659312593 (213) 623-2225

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90806 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MELISSA A MEDELLIN FNP
Nurse Practitioner (Family)
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
DR. JAMES NORMAN LOGAN M.D.
Internal Medicine (Critical Care Medicine)
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
DR. SABRINA ANN HARPER MD
Internal Medicine
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
LAURA SEZONOV PHARMD
Pharmacist (Ambulatory Care)
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 490-3096
TINA DER KITAJIMA M.D.
Internal Medicine
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
DR. SHEILA ANN SALAMUNOVICH PHARM.D.
Pharmacist (Pharmacotherapy)
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 490-3044
MICHELE LYNN ENO M.D.
Obstetrics & Gynecology
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
MISS JOILYN CAMYL ANDERSON
Nurse Practitioner (Family)
2699 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333

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 Chau Nguyen's NPI number?

The NPI number for Chau Nguyen is 1861718397. It was assigned to this individual provider in the NPPES registry on April 8, 2010.

Where is Chau Nguyen located?

Chau Nguyen practices at 2699 Atlantic Ave, Long Beach, CA 90806. The listed phone number is (562) 426-3333.

What is Chau Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Chau Nguyen enrolled in Medicare?

Yes. Chau 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 organizations bill Medicare for Chau Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chau Nguyen reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Harbor City, CA) and Healthcare Partners Affiliates Medical Group (Los Angeles, 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 Chau 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 Chau Nguyen was last updated on December 8, 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.