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DR. KOOK I CHANG M.D.
NPI 1356442354
Internal Medicine in Van Nuys, CA

Active since September 25, 2006PECOS EnrolledCLIA 05D0914671 · Waiver
14600 SHERMAN WAY STE 270, VAN NUYS, CA 91405(818) 780-7771(818) 376-1972 Get Directions Write a Review

NPPES record last updated: May 16, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Kook I Chang M.d. NPPES

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

DR. KOOK I CHANG M.D. (NPI 1356442354) is an individual internal medicine provider in Van Nuys, California, licensed in California (A 40580) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through May 6, 2028, and is a graduate of Other (1967).

NPPES Registry Identity

NPI1356442354
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. KOOK I CHANGCredential: M.D.
Location Address14600 SHERMAN WAY STE 270Van Nuys, CA 91405-2272
Mailing Address14600 Sherman Way Ste 270Van Nuys, CA 91405-2272 · (818) 780-7771 · Fax (818) 376-1972
Phone(818) 780-7771
Fax(818) 376-1972
Sole ProprietorYes
Medical School CMSOtherGraduated 1967
Enumeration DateSeptember 25, 2006
Last NPPES UpdateMay 16, 2014
✔ NPI 1356442354 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A 40580
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
14600 SHERMAN WAY STE 270, Van Nuys, CA 91405
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Other Identifiers 1

Medicare UPINC 35516CA

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. Kook I Chang M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7214987015
PECOS Enrollment IDI20050129000140
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0914671

Kook I Chang's Office · Van Nuys, CA
Active · expires May 6, 2028
CLIA Number05D0914671
Laboratory TypePhysician Office
Certificate Effective DateMay 7, 2026
Certificate Expiration DateMay 6, 2028
Laboratory DirectorKook I. Chang
Laboratory Phone(818) 780-7771
Laboratory LocationKook I Chang's Office14600 Sherman Way #270, Van Nuys, CA 91405
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 7

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
606 services166 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
191 services134 patients
Blood glucose (sugar) test performed by hand-held instrument 82962
A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.
116 services49 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
61 services61 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
57 services40 patients
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
45 services45 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91405 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
13 suppliers59 claims121 services$6.16 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
12 suppliers52 claims54 services$1.05 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KOOK I. CHANG, M.D. A PROFESSIONAL CORPORATION
Internal Medicine (Cardiovascular Disease)
14600 SHERMAN WAY STE 270
VAN NUYS, CA 91405
Los Angeles County (818) 780-7771

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 Kook Chang's NPI number?

The NPI number for Kook Chang is 1356442354. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Where is Kook Chang located?

Kook Chang practices at 14600 Sherman Way Ste 270, Van Nuys, CA 91405. The listed phone number is (818) 780-7771.

What is Kook Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Kook Chang enrolled in Medicare?

Yes. Kook Chang is registered in the Medicare PECOS enrollment system.

Does Kook Chang hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0914671) is associated with this NPI, valid through May 6, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Kook Chang was last updated on May 16, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.