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Edit this profileWhere to find Phyllis C. Chang, MD
- Geneva location main office
300 Randall Rd, Geneva, IL 60134 - Glen Ellyn location
430 Pennsylvania Ave, Glen Ellyn, IL 60137
About Dr. Chang
Phyllis C. Chang, MD practices obstetrics in Geneva, IL. Phyllis is a 2003 graduate of Rush Medical College of Rush University. Phyllis is also listed as specializing in obstetrics & gynecology. Medicare claims data shows Phyllis provided 31 services to 26 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1265654735.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (630) 653-4240
- Email not available
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Practice Locations
300 RANDALL RD
Geneva, IL 60134
430 Pennsylvania Ave
Glen Ellyn, IL 60137
Procedures Most Often Billed to Medicare
31 services · 26 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
19 | Less often than most peers in Obstetrics |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
12 | Less often than most peers in Obstetrics |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other obstetricses in Geneva 2
Same specialty, same city.
More connections — 14 related providers in 2 groups
Trained at Rush Medical College of Rush University 6
Other providers in the same specialty who trained at the same institution.
Class of 2003 at Rush Medical College of Rush University 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Chang?
Dr. Chang is an obstetrics in Geneva, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Chang's address?
Dr. Chang is listed at 300 Randall Rd, Geneva, IL 60134. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chang?
The number on file is (630) 653-4240. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Chang?
Dr. Chang's National Provider Identifier is 1265654735. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Chang train?
Dr. Chang attended Rush Medical College of Rush University, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Chang have?
Dr. Chang has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chang perform?
According to Medicare billing data, Dr. Chang the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Chang's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chang. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.