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

Lee Kien Yong, MD

Individual provider Infectious Disease Physician · NPI 1952538522

Lee Kien Yong, MD is an Infectious Disease in Saint Charles, Missouri. Qualified in 2003, 23 years ago. Practices with Infectious Diseases PC, a 9-clinician group and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
23
Licensed in
IL, MO
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

330 1st Capitol Dr Ste 260
Saint Charles, MO 63301-2888
Phone: (636) 925-0900
Fax: (636) 925-0960
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 2011001240 (MO)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 036123437 (IL)

Record details

NPI number1952538522
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2009
Last updated in NPPESJuly 19, 2021
Certification dateApril 1, 2021

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Infectious Diseases Pc — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare