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DR. SIMON Y. CHANG M.D.
NPI 1760594097
Family Medicine in Downey, CA

Active since August 31, 2006PECOS Enrolled
10441 LAKEWOOD BLVD STE AB, DOWNEY, CA 90241(562) 869-1070(562) 286-8777 Get Directions Write a Review

NPPES record last updated: November 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 15, 2025, Jan 19, 2023 (2 updates tracked since 2023).

About Dr. Simon Y. Chang M.d. NPPES

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

DR. SIMON Y. CHANG M.D. (NPI 1760594097) is an individual family medicine provider in Downey, California, licensed in California (A69205) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1760594097
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. SIMON Y. CHANGCredential: M.D.
Location Address10441 LAKEWOOD BLVD STE ABDowney, CA 90241-2744
Mailing AddressPo Box 35380Las Vegas, NV 89133-5380 · (702) 579-3203
Phone(562) 869-1070
Fax(562) 286-8777
Sole ProprietorNo
Enumeration DateAugust 31, 2006
Last NPPES UpdateNovember 15, 20252 updates tracked since enumeration
NPPES CertifiedNovember 15, 2025
✔ NPI 1760594097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A69205
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
10441 LAKEWOOD BLVD STE AB, Downey, CA 90241
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Other Identifiers 1

Medicaid00A692050CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Simon Y. Chang M.d. 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

3

Medicare enrollment records show Simon Chang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Healthcare Partners Affiliates Medical Group
11 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
Gn Medical Associates, Inc.
22 mi
Family Medicine
3090 BRISTOL ST STE 200
Costa Mesa, CA 92626
  • Reassigned Medicare billing, California enrollment
  • 103 clinicians in this Medicare group
NPI 1275576522 (888) 789-9585
Careconnectmd Ca PC
22 mi
Family Medicine
3090 BRISTOL ST STE 200
Costa Mesa, CA 92626
  • Reassigned Medicare billing, California enrollment
  • 194 clinicians in this Medicare group
NPI 1366063125 (888) 789-9585

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 90241 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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

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

Wheelchair accessory, manual swingaway, retractable or removable mounting hardware for joystick, other control interface or positioning accessory E1028
DME-Wheelchairs · category DD021N
2 suppliers13 claims13 services$13.22 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 19

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

DR. RAJ BALASUNDARAM M.D.
Internal Medicine
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1070
DR. SAMI EDRIS MD
Internal Medicine
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1070
DR. DAVID HAO CHEN MD
Internal Medicine
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1070
DR. VARNEET KAUR SANDHU M.D
Internal Medicine
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (701) 579-3203
DR. KANAV PREMNATH GUPTA
Hospitalist
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1070
DR. SASHA MAHER DO
Otolaryngology
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1089
JANINE EMPENO CUEVAS NP
Nurse Practitioner (Acute Care)
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1070
SOPHIE-CHIZOMA CHINENYE ASOGU-NWOSU NURSE PRACTITIONER
Nurse Practitioner
10441 LAKEWOOD BLVD STE AB
DOWNEY, CA 90241
Los Angeles County (562) 869-1070

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 1760594097. It was assigned to this individual provider in the NPPES registry on August 31, 2006.

Where is Simon Chang located?

Simon Chang practices at 10441 Lakewood Blvd Ste Ab, Downey, CA 90241. The listed phone number is (562) 869-1070.

What is Simon Chang's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Simon Chang enrolled in Medicare?

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

Which organizations bill Medicare for Simon Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Simon Chang reassigns Medicare benefits to 3 organizations: Healthcare Partners Affiliates Medical Group (Los Angeles, CA), Gn Medical Associates, Inc. (Costa Mesa, CA) and Careconnectmd Ca PC (Costa Mesa, 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 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 November 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.