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DR. ROBERT CHANG M.D.
NPI 1992894885
Internal Medicine - Nephrology in Corona, CA

Active since October 11, 2006PECOS EnrolledAccepts Medicare Assignment
2057 COMPTON AVE, SUITE 102, CORONA, CA 92881(951) 736-6757(951) 736-0167 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Robert Chang M.d. NPPES

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

DR. ROBERT CHANG M.D. (NPI 1992894885) is an individual nephrology provider in Corona, California, licensed in California (A85088) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (2002).

NPPES Registry Identity

NPI1992894885
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. ROBERT CHANGCredential: M.D.
Location Address2057 COMPTON AVE, SUITE 102Corona, CA 92881-7287
Mailing AddressPo Box 54130Los Angeles, CA 90054-0130 · (951) 687-3200 · Fax (951) 687-8923
Phone(951) 736-6757
Fax(951) 736-0167
Sole ProprietorNo
Medical School CMSBoston University School Of MedicineGraduated 2002
Enumeration DateOctober 11, 2006
Last NPPES UpdateNovember 29, 2021
✔ NPI 1992894885 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · A85088
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
2057 COMPTON AVE, Corona, CA 92881
Open in Google Maps ↗

Other Identifiers 1

Medicaid00A850880CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Robert Chang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6608957931
PECOS Enrollment IDI20080112000205
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 Robert Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
16 mi
Health Maintenance Organization
441 N LAKEVIEW AVE
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1952333460 (714) 279-4000

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 92881 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Clinical Information Reconciliation
For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician performs clinical information reconciliation.
89%1,236 patients4/55-star benchmark: 100%
Closing the Referral Loop: Receipt of Specialist Report
Percentage of patients with referrals, regardless of age, for which the referring provider receives a report from the provider to whom the patient was referred
23%69 patients1/55-star benchmark: 95%
Diabetes: Foot Exam
The percentage of patients 18-75 years of age with diabetes (type 1 and type 2) who received a foot exam (visual inspection and sensory exam with mono filament and a pulse exam) during the measurement year
87%175 patients4/55-star benchmark: 98%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
52%3,538 patients1/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
97%2,364 patients4/55-star benchmark: 100%
Patient-Generated Health Data
Patient-generated health data or data from a non-clinical setting is incorporated into the certified EHR technology for at least one unique patient seen by the MIPS eligible clinician during the performance period.
28%709 patients
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible…
91%709 patients4/55-star benchmark: 100%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
92%346 patients5/55-star benchmark: 90%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
99%548 patients5/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 98% · 446 patients
Patients tobacco: 97% · 446 patients
91%23 patients4/55-star benchmark: 98%
Provide Patient Access
For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…
89%709 patients4/55-star benchmark: 100%
Request/Accept Summary of Care
For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician receives or retrieves and incorporates into the patient's record an…
4%1,181 patients1/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…
49%709 patients3/55-star benchmark: 75%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 346 patients
0%346 patients5/55-star benchmark: 100%
View, Download and Transmit (VDT)
During the performance period, at least one unique patient (or patient-authorized representatives) seen by the MIPS eligible clinician actively engages with the EHR made accessible by the MIPS eligible clinician.
49%709 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
3 suppliers12 claims900 services$0.24 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 2

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

RENAL TREATMENT CENTERS CALIFORNIA INC
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
2057 COMPTON AVE, STE 101
CORONA, CA 92881
Riverside County (951) 735-5845
PAUL CHENG-TE NIU M.D.
Internal Medicine (Nephrology)
2057 COMPTON AVE, SUITE 102
CORONA, CA 92881
Riverside County (951) 736-6757

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 Robert Chang's NPI number?

The NPI number for Robert Chang is 1992894885. It was assigned to this individual provider in the NPPES registry on October 11, 2006.

Where is Robert Chang located?

Robert Chang practices at 2057 Compton Ave Suite 102, Corona, CA 92881. The listed phone number is (951) 736-6757.

What is Robert Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Robert Chang enrolled in Medicare?

Yes. Robert Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Robert Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Chang reassigns Medicare benefits to Southern California Permanente Medical Group (Anaheim, 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 Robert 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 Robert Chang was last updated on November 29, 2021. 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.