THEODORE LYONS STERN (MD) – Family Medicine Physician, NPI 1043202567
Family Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
5,037 FAMILY PRACTICE in IL
Provider Addresses for THEODORE LYONS STERN (MD)
635 N Fairbanks Ct
Chicago, IL 606115435
Phone: (312) 472-3173
Fax: (312) 472-3176
Type: Location
2160 S 1st Ave
Maywood, IL 601533328
Phone: (708) 216-9000
Type: Location
303 W OGDEN AVE
WESTMONT, IL 605591419
Phone: (630) 432-6200
Fax: (630) 432-6660
Type: Location
2022, Kelle Drive, Chesterton, Porter County, Indiana, 46304, United States
CHESTERTON, IN 463048708
Phone: (219) 364-3616
Fax: (219) 364-3610
Type: Mailing
CareEXPRESS Urgent Care, 650, Dickinson Road, Morgan Park, Chesterton, Porter County, Indiana, 46304, United States
CHESTERTON, IN 463043387
Phone: (219) 926-7755
Fax: (219) 929-1885
Type: Location
635 N FAIRBANKS CT
CHICAGO, IL 606115435
Phone: (312) 472-3173
Fax: (312) 472-3176
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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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: 2004-01-26
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20040122001175 | I | Family Practice | IN | TBD |
| I20040126000133 | I | Family Practice | IL | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 231 | 221 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 130 | 126 | $0 |
| 81003 | Automated urinalysis test | 63 | 62 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 50 | 50 | $0 |
| 0241U | Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 44 | 44 | $0 |
Insurance plans in this area (ZIP 60611)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | IL | |
| N E U R O L O G Y | IL | |
| General Surgery | IN | |
| Pediatric Medicine, Emergency Medicine | IL | |
| - | IL | |
| - | IL | |
| Cardiovascular Disease (Cardiology) | IL | |
| - | IL | |
| Nurse Practitioner | MI | |
| Interventional Cardiology, Internal Medicine, Cardiovascular Disease (Cardiology) | IL |
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