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SIMON CHANG DO
NPI 1144780230
Internal Medicine in Sylmar, CA

Active since March 23, 2019PECOS Enrolled
14445 OLIVE VIEW DR, DEPARTMENT OF MEDICINE, ROOM 2B-182, SYLMAR, CA 91342(747) 210-3205(747) 210-4573 Get Directions Write a Review

NPPES record last updated: July 20, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 20, 2022, Mar 23, 2019 (2 updates tracked since 2019).

About Simon Chang Do NPPES

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

SIMON CHANG DO (NPI 1144780230) is an individual internal medicine provider in Sylmar, California, licensed in California (20A19976) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1144780230
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSIMON CHANGCredential: DO
Location Address14445 OLIVE VIEW DR, DEPARTMENT OF MEDICINE, ROOM 2B-182Sylmar, CA 91342
Mailing Address14445 Olive View Dr, Department Of Medicine, Room 2b-182Sylmar, CA 91342 · (747) 210-3205 · Fax (747) 210-4573
Phone(747) 210-3205
Fax(747) 210-4573
Sole ProprietorNo
Enumeration DateMarch 23, 2019
Last NPPES UpdateJuly 20, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 22, 2020
✔ NPI 1144780230 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A19976
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
14445 OLIVE VIEW DR, Sylmar, CA 91342
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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)

Simon Chang Do 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 Simon Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
288 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000

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 91342 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.

COUNTY OF LOS ANGELES AUDITOR CONTROLLER
General Acute Care Hospital
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (818) 364-1555
DENNIS POON
Nurse Practitioner (Family)
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (747) 210-3000
SERENA KE MD
Student in an Organized Health Care Education/Training Program
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (747) 210-3205
DR. PAUL I LIU M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
14445 OLIVE VIEW DR, ROOM 1A116
SYLMAR, CA 91342
Los Angeles County (818) 364-4033
DR. ARTHUR JENG M.D.
Internal Medicine (Infectious Disease)
14445 OLIVE VIEW DR, 2B182
SYLMAR, CA 91342
Los Angeles County (818) 364-3205
MRS. CECILIA CORONADO PTA
Physical Therapy Assistant
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (747) 210-4245
COUNTY OF LOS ANGELES AUDITOR CONTROLLER
General Acute Care Hospital
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (818) 364-1555
MR. ANDRIY A KUZNETSOV PT
Physical Therapist
14445 OLIVE VIEW DR
SYLMAR, CA 91342
Los Angeles County (818) 364-4245

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 Simon Chang's NPI number?

The NPI number for Simon Chang is 1144780230. It was assigned to this individual provider in the NPPES registry on March 23, 2019.

Where is Simon Chang located?

Simon Chang practices at 14445 Olive View Dr Department Of Medicine, Room 2b-182, Sylmar, CA 91342. The listed phone number is (747) 210-3205.

What is Simon Chang's specialty?

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

Is Simon Chang enrolled in Medicare?

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

Which organization bills Medicare for Simon Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Simon Chang reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, 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 Simon Chang'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 Simon Chang was last updated on July 20, 2022. 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.