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HYO-JUNG CHOI MBBS
NPI 1770080343
Pediatrics - Neonatal-Perinatal Medicine in Tarzana, CA

Active since April 10, 2018PECOS Enrolled
18321 CLARK ST, TARZANA, CA 91356(310) 423-4451(310) 423-2114 Get Directions Write a Review

NPPES record last updated: July 9, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 9, 2025, May 13, 2025, Nov 23, 2022 and 1 more (4 updates tracked since 2018).

About Hyo-jung Choi Mbbs NPPES

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

HYO-JUNG CHOI MBBS (NPI 1770080343) is an individual neonatal-perinatal medicine provider in Tarzana, California, licensed in California (A173303) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS and maintains a secondary practice location in West Hollywood.

NPPES Registry Identity

NPI1770080343
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameHYO-JUNG CHOICredential: MBBS
Location Address18321 CLARK STTarzana, CA 91356-3501
Mailing Address4140 W 190th StTorrance, CA 90504-5513
Phone(310) 423-4451
Fax(310) 423-2114
Sole ProprietorNo
Enumeration DateApril 10, 2018
Last NPPES UpdateJuly 9, 20254 updates tracked since enumeration
NPPES CertifiedJuly 9, 2025
✔ NPI 1770080343 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in CA · A173303
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Also ListedPediatricsTaxonomy 208000000X · License 173303 (CA)
18321 CLARK ST, Tarzana, CA 91356
Open in Google Maps ↗

Secondary Practice Location 1

Location 18700 Beverly Blvd Ste 4221West Hollywood, CA 90048-1804 · Phone (310) 423-4451 · Fax (310) 423-2114

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hyo-jung Choi Mbbs 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 Reassignments

2

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

Cedars-Sinai Medical Care Foundation
11 mi
Anesthesiology
8700 BEVERLY BLVD STE SB-290
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 2,118 clinicians in this Medicare group
NPI 1043826720 (310) 423-1447
Cedars-Sinai Medical Center
11 mi
General Acute Care Hospital
8700 BEVERLY BLVD
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 1,001 clinicians in this Medicare group
NPI 1639172372 (323) 866-8600

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. JONATHAN ANDREW PRINCE M.D.
Emergency Medicine
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5170
ART ONCOLOGY INC
Radiology (Diagnostic Radiology)
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (215) 313-0024
DR. NEIL ERIC CANBY M.D.
Emergency Medicine
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5170
KELLY ANN ARCHER KAMINSKI OTR/L
Occupational Therapist
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 881-0800
DR. FREDERICK THEODORE DENNIS M.D.
Emergency Medicine
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5170
KIMBERLY DANG PHAM
Pharmacist
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 881-0800
CAROL V GREENE NNP
Nurse Practitioner (Neonatal)
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (818) 708-5242
CARMEN BOTERO, MD
Pediatrics (Pediatric Critical Care Medicine)
18321 CLARK ST
TARZANA, CA 91356
Los Angeles County (208) 676-9080

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 Hyo-jung Choi's NPI number?

The NPI number for Hyo-jung Choi is 1770080343. It was assigned to this individual provider in the NPPES registry on April 10, 2018.

Where is Hyo-jung Choi located?

Hyo-jung Choi practices at 18321 Clark St, Tarzana, CA 91356. The listed phone number is (310) 423-4451.

What is Hyo-jung Choi's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Hyo-jung Choi enrolled in Medicare?

Yes. Hyo-jung Choi is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Hyo-jung Choi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hyo-jung Choi reassigns Medicare benefits to 2 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA) and Cedars-Sinai Medical Center (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 Hyo-jung Choi'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 Hyo-jung Choi was last updated on July 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.