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BENJAMIN CHANG
NPI 1184251365
Psychiatry & Neurology - Psychiatry in Fontana, CA

Active since March 26, 2020PECOS Enrolled
17234 VALLEY BLVD., BLDG. A, FONTANA, CA 92335(866) 205-3595 Get Directions Write a Review

NPPES record last updated: October 23, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 16, 2024, Nov 29, 2021, Mar 26, 2020 (3 updates tracked since 2020).

About Benjamin Chang NPPES

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

BENJAMIN CHANG (NPI 1184251365) is an individual psychiatry provider in Fontana, California, licensed in California (A177776) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS and maintains a secondary practice location in Fullerton.

NPPES Registry Identity

NPI1184251365
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameBENJAMIN CHANG
Location Address17234 VALLEY BLVD., BLDG. AFontana, CA 92335
Mailing Address2501 E Chapman Ave Ste 265Fullerton, CA 92831-3108 · (714) 706-0206 · Fax (714) 706-0207
Phone(866) 205-3595
Sole ProprietorNo
Enumeration DateMarch 26, 2020
Last NPPES UpdateOctober 23, 20253 updates tracked since enumeration
NPPES CertifiedOctober 23, 2025
✔ NPI 1184251365 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A177776
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
17234 VALLEY BLVD., BLDG. A, Fontana, CA 92335
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Secondary Practice Location 1

Location 12501 E Chapman Ave Ste 265Fullerton, CA 92831-3108 · Phone (714) 706-0206

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

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

Southern California Permanente Medical Group
0.2 mi
Health Maintenance Organization
9961 SIERRA AVE
Fontana, CA 92335
  • Reassigned Medicare billing, California enrollment
  • 5,228 clinicians in this Medicare group
NPI 1689606196 (909) 427-3910

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 92335 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
$179.42 typical visit price
range $59.60 – $179.42
Typical copayment $44.85 (range $14.90 – $44.85)
Most-billed visit code 99205
Established Patient
$74.08 typical visit price
range $19.37 – $146.42
Typical copayment $18.52 (range $4.84 – $36.60)
Most-billed visit code 99213
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 2

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

DAVID HERNANDEZ JR. MD
Student in an Organized Health Care Education/Training Program
17234 VALLEY BLVD., BLDG. A
FONTANA, CA 92335
San Bernardino County (909) 427-4128
RAHUL MAINI MD
Psychiatry & Neurology (Child & Adolescent Psychiatry)
17234 VALLEY BLVD., BLDG. A, GRADUATE MEDICAL EDUCATION-CENTER FOR MEDICAL EDUCATION
FONTANA, CA 92335
San Bernardino County (909) 427-5679

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 Benjamin Chang's NPI number?

The NPI number for Benjamin Chang is 1184251365. It was assigned to this individual provider in the NPPES registry on March 26, 2020.

Where is Benjamin Chang located?

Benjamin Chang practices at 17234 Valley Blvd., Bldg. A, Fontana, CA 92335. The listed phone number is (866) 205-3595.

What is Benjamin Chang's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Benjamin Chang enrolled in Medicare?

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

Which organization bills Medicare for Benjamin Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Benjamin Chang reassigns Medicare benefits to Southern California Permanente Medical Group (Fontana, 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 Benjamin 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 Benjamin Chang was last updated on October 23, 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.