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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JUSTINE KO M.D., M.P.H.
NPI 1396204517
Internal Medicine - Pulmonary Disease in Duarte, CA

Active since March 18, 2019PECOS Enrolled
1500 DUARTE RD, DUARTE, CA 91010(800) 826-4673 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 10, 2026, Mar 18, 2019 (2 updates tracked since 2019).

About Dr. Justine Ko M.d., M.p.h. NPPES

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

DR. JUSTINE KO M.D., M.P.H. (NPI 1396204517) is an individual pulmonary disease provider in Duarte, California, licensed in California (A177470) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1396204517
Entity TypeIndividualFemale
Primary Taxonomy207RP1001X
Provider Legal NameDR. JUSTINE KOCredential: M.D., M.P.H.
Location Address1500 DUARTE RDDuarte, CA 91010-3012
Mailing Address1200 N State Street, Clinic Tower, Suite A7dLos Angeles, CA 90033-1029
Phone(800) 826-4673
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMarch 18, 2019
Last NPPES UpdateSeptember 10, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2026
✔ NPI 1396204517 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in CA · A177470
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal MedicineTaxonomy 207R00000X · License A177470 (CA)
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A177470 (CA)
1500 DUARTE RD, Duarte, CA 91010
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Justine Ko M.d., M.p.h. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3971933649
PECOS Enrollment IDI20260728000065
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91010 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.

SASAN FAZELI M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
SKAI MINDY FU PHARMD
Pharmacist
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 500-5461
JIMMIE WONG MD
Radiology (Diagnostic Radiology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 359-8111
TERENCE WILLIAMS M.D.
Radiology (Radiation Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
DR. MUSTAFA RAOOF M.D.
Surgery (Surgical Oncology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
DR. EDNA CLOGG SHENVI M.D.
Surgery
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673
ALAN CHEN TANG M.D.
Anesthesiology
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 359-8111
WINSTON YUHSIEN LEE MD, PHD
Pathology (Hematology)
1500 DUARTE RD
DUARTE, CA 91010
Los Angeles County (626) 256-4673

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 Justine Ko's NPI number?

The NPI number for Justine Ko is 1396204517. It was assigned to this individual provider in the NPPES registry on March 18, 2019.

Where is Justine Ko located?

Justine Ko practices at 1500 Duarte Rd, Duarte, CA 91010. The listed phone number is (800) 826-4673.

What is Justine Ko's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Justine Ko enrolled in Medicare?

Yes. Justine Ko is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Justine Ko was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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.