LEAH M USTAS (M.D.) – Psychiatry Physician, NPI 1033328869
Psychiatry Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,367 PSYCHIATRY in IL
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Provider Addresses for LEAH M USTAS (M.D.)
29373 NETWORK PL
CHICAGO, IL 606731293
Phone: (847) 390-5900
Type: Mailing
Advocate Children's Hospital, 4440, West 95th Street, Oak Lawn, Worth Township, Cook County, Illinois, 60453, United States
OAK LAWN, IL 604532600
Phone: (708) 684-7482
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.
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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: 2009-09-17
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 |
|---|---|---|---|---|
| I20090917000469 | I | Psychiatry | 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 |
|---|---|---|---|---|
| 90792 | Psychiatric diagnostic evaluation with medical services | 90 | 90 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 36 | 28 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 14 | $0 |
Insurance plans in this area (ZIP 60673)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | IL | |
| A N E S T H E S I O L O G Y | IL | |
| - | MN | |
| - | IL | |
| - | IL | |
| Rheumatology, Internal Medicine | IL | |
| - | IL | |
| Internal Medicine | IL | |
| P S Y C H I A T R Y | IL | |
| - | IL |
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