Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Aileen Wendy Zhen, DO

Individual provider Internal Medicine Physician · NPI 1174985998

Aileen Wendy Zhen, DO practises Nephrology in Springfield, Illinois. Graduated from University of New England, College of Osteo Medicine in 2016, 10 years ago. Practices with Springfield Clinic, LLP, a 679-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois, Massachusetts and Pennsylvania.

Years since qualifying
10
Trained at
University of New England, College of Osteo Medicine
Licensed in
IL, MA, PA
In the registry since
2016
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

350 W Carpenter St
Springfield, IL 62702-4902
Phone: (217) 528-7541
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 800 Harrison Ave # Bcd-G12, Boston, MA 02118-2905 — (617) 638-8000

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 036.155827 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence OT017265 (PA)
Nephrology Physician Taxonomy 207RN0300X · Licence 279360 (MA)

Record details

NPI number1174985998
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 22, 2016
Last updated in NPPESJuly 7, 2021
Certification dateJuly 7, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Medical schoolUNIVERSITY OF NEW ENGLAND, COLLEGE OF OSTEO MEDICINE
Graduated 2016 (10 years in practice)
Group practice Springfield Clinic, Llp — 679 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations17 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients437
Services billed 1,356 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $178 9 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Springfield Clinic, LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 679 clinicians in the practice; 12 are shown here.

Other providers in Springfield