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PHYLLIS C CHANG MD
NPI 1265654735
Obstetrics & Gynecology - Obstetrics in Geneva, IL

Active since May 03, 2007PECOS Enrolled
300 RANDALL RD, GENEVA, IL 60134(630) 653-4240(630) 938-9190 Get Directions Write a Review

NPPES record last updated: June 4, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Phyllis C Chang Md NPPES

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

PHYLLIS C CHANG MD (NPI 1265654735) is an individual obstetrics provider in Geneva, Illinois, licensed in Illinois (036116925) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Glen Ellyn.

NPPES Registry Identity

NPI1265654735
Entity TypeIndividualFemale
Primary Taxonomy207VX0000X
Provider Legal NamePHYLLIS C CHANGCredential: MD
Location Address300 RANDALL RDGeneva, IL 60134-4200
Mailing Address300 Randall RdGeneva, IL 60134-4200 · (630) 653-4240 · Fax (630) 938-9190
Phone(630) 653-4240
Fax(630) 938-9190
Sole ProprietorNo
Enumeration DateMay 3, 2007
Last NPPES UpdateJune 4, 2024
NPPES CertifiedJune 4, 2024
✔ NPI 1265654735 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · ObstetricsAllopathic & Osteopathic Physicians
Taxonomy Code207VX0000X
License✔ Licensed in IL · 036116925
Definition
A physician who specializes in diagnosis, treatment, and management of patients with obstetric conditions. Source: National Uniform Claim Committee
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License 036116925 (IL)
300 RANDALL RD, Geneva, IL 60134
Open in Google Maps ↗

Secondary Practice Location 1

Location 1430 Pennsylvania AveGlen Ellyn, IL 60137-4464 · Phone (630) 469-9200

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

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

Central Dupage Physician Group
14 mi
Family Medicine
5777 DEPARTMENT
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 1,664 clinicians in this Medicare group
NPI 1033149844 (630) 933-3300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

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 low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
19 services14 patients
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.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60134 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
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 20

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

MEGEN ALYSON TOWNSEND PA-C
Physician Assistant
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 208-4015
DR. NICHOLAS PATRICK SLATTERY MD
Emergency Medicine
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 208-3000
SHARI ANNE SCHRADER APRNBC
Nurse Practitioner (Adult Health)
300 RANDALL RD, WOUND CENTER
GENEVA, IL 60134
Kane County (630) 208-4460
DR. AMANDA K. CORUM MD
Hospitalist
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 933-4700
AMY LYNN ARROCENA
Physical Therapist
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 208-3000
MS. JACLYNN M DENARDO CRNA
Nurse Anesthetist, Certified Registered
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 208-4060
BRUCE V DORSEY MD
Pathology (Anatomic Pathology & Clinical Pathology)
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 208-4368
HARSH BIPIN PATEL
Hospitalist
300 RANDALL RD
GENEVA, IL 60134
Kane County (630) 933-4700

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 Phyllis Chang's NPI number?

The NPI number for Phyllis Chang is 1265654735. It was assigned to this individual provider in the NPPES registry on May 3, 2007.

Where is Phyllis Chang located?

Phyllis Chang practices at 300 Randall Rd, Geneva, IL 60134. The listed phone number is (630) 653-4240.

What is Phyllis Chang's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Obstetrics, with taxonomy code 207VX0000X.

Is Phyllis Chang enrolled in Medicare?

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

Which organization bills Medicare for Phyllis Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Phyllis Chang reassigns Medicare benefits to Central Dupage Physician Group (Carol Stream, IL). 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 Phyllis Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Phyllis Chang accept?

Health plans from Oscar Health list Phyllis Chang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Phyllis Chang was last updated on June 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.