Phyllis C. Chang, MD
Obstetrics Physician · Geneva, IL
Phyllis C. Chang, MD is an obstetrics physician with a practice address in Geneva, Illinois, and NPI 1265654735, issued on May 3, 2007. Check the license (Illinois 036116925, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Phyllis C. Chang
- Credential
- MD
- Primary taxonomy
- Obstetrics Physician 207VX0000X
- License number
- 036116925 IL
Self-reported in NPPES; status is on the state search - Practice location
- 300 Randall RD, Geneva, IL 60134
- Phone
- (630) 653-4240
- Enumerated
- May 3, 2007
- Record last updated
- Jun 4, 2024
- Fax
- (630) 938-9190
- Medicare enrollment
- Enrolled (PECOS I20070726000227); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2003
- Entity
- Type 1 · individual
Also registered at 300 Randall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Adeli, M.D.Obstetrics & Gynecology Physician1114928397
- Fatma Ahmed, M.D.Diagnostic Radiology Physician1285990564
- Abigail Alexander, APRN, CRNACertified Registered Nurse Anesthetist1629744255
- Theresia Anderson, CRNACertified Registered Nurse Anesthetist1821006057
- Christopher Arbir, CRNACertified Registered Nurse Anesthetist1508920315
- Amy ArrocenaPhysical Therapist1043962830
Verify Phyllis C. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036116925Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average obstetrics physician in 2024
83 Medicare Part D claims for 36 beneficiaries, against an average of 218 among the 863 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $94.16
5 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 679 providers of this specialty with any payment received $826.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Central Dupage Physician GroupGeneva, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Obstetrics Physician providers in Illinois
There are 54 obstetrics physician records in Illinois.
Other obstetrics physician records in Illinois
- Medha Amin, MDDowners Grove, IL1912197534
- Heather Bouma-Johnston, MDChicago, IL1376172049
- Sarah Bradley, M.D.Rockford, IL1124225073
- Jesse Buedefeldt-Pollard, M.D.Springfield, IL1669768644
- Melvin Bunn, MDChicago, IL1427007582
- Cerise Bush, MDFrankfort, IL1053567099
- John Bush, M.D.Park Ridge, IL1710120779
- Helen Cejtin, MDChicago, IL1497971931
- Vicki Chamberlain, MDArlington Hts, IL1538155650
- Katherine Cotangco, D.O.Berwyn, IL1902260904
Common questions
What is Phyllis C. Chang, MD's NPI number?
Phyllis C. Chang, MD's National Provider Identifier (NPI) is 1265654735, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Phyllis C. Chang, MD located?
The NPPES record lists a practice address at 300 Randall RD, Geneva, IL, 60134. Phone: (630) 653-4240. Providers update this record themselves, so call before visiting.
How can I verify Phyllis C. Chang, MD's license?
NPPES lists Illinois license number 036116925, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Phyllis C. Chang, MD prescribe under Medicare Part D?
In 2024, Phyllis C. Chang, MD had 83 Medicare Part D claims for 36 beneficiaries; the average among obstetrics physician prescribers was 218. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.