LEE KIEN YONG (M.D.) – Infectious Disease Physician, NPI 1952538522
Infectious Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
235 INFECTIOUS DISEASE in MO
Provider Addresses for LEE KIEN YONG (M.D.)
335 OAK STAND CT
CHESTERFIELD, MO 630051310
Phone: (636) 751-2042
Type: Mailing
330 1ST CAPITOL DR STE 260
SAINT CHARLES, MO 633012888
Phone: (636) 925-0900
Fax: (636) 925-0960
Type: Location
Rush University Medical Center, 1653, West Congress Parkway, Near West Side, Illinois Medical District, Chicago, Illinois Medical District, Illinois, 60612, United States
CHICAGO, IL 606123833
Phone: (312) 942-2061
Type: Location
521, North Harvey Avenue, Oak Park, Cook County, Illinois, 60302, United States
FL 2
OAK PARK, IL 603022338
Phone: (646) 573-9901
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-10-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20111013000300 | I | Infectious Disease | MO | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 492 | 217 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 365 | 138 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 173 | 151 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 113 | 105 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 17 | 15 | $0 |
Insurance plans in this area (ZIP 63005)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Infectious Disease, Internal Medicine, Pediatric Medicine | MO | |
| Infectious Disease | MO | |
| Infectious Disease, Internal Medicine | MO | |
| Infectious Disease, Internal Medicine | MO | |
| Internal Medicine, Infectious Disease | MO | |
| Infectious Disease | CT | |
| Infectious Disease, Internal Medicine | IL | |
| Internal Medicine | MO |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.