Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Jeffrey Y Liang, MD

Individual provider Internal Medicine Physician · NPI 1679540330

Dr. Jeffrey Y Liang, MD is an Internal Medicine in Peoria, Illinois. Qualified in 1980, 46 years ago. Practices with Proctor Health Systems, a 132-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
46
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

10322 N Juliet Ct
Peoria, IL 61615-1199
Phone: (309) 243-8598
Fax: (309) 243-9895
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036088232 (IL)

Record details

NPI number1679540330
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 1, 2006
Last updated in NPPESAugust 26, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1980 (46 years in practice)
Group practice Proctor Health Systems — 132 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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