MARK TIMOTHY STEINHAUSER (PA-C) – Physician Assistant, NPI 1750948436
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,035 PHYSICIAN ASSISTANT in IL
Provider Addresses for MARK TIMOTHY STEINHAUSER (PA-C)
259 E Erie St
Chicago, IL 60611
Phone: (312) 695-6868
Type: Location
350 N Grandview Ave
Dubuque, IA 520016388
Phone: (563) 582-1881
Type: Location
GreenRiver, 259, East Erie Street, Magnificent Mile, Near North Side, Chicago, Cook County, Illinois, 60611, United States
CHICAGO, IL 60611
Phone: (312) 695-6868
Type: Location
680 North Lake Shore Drive, 680, North Lake Shore Drive, Streeterville, Near North Side, Chicago, Cook County, Illinois, 60611, United States
CHICAGO, IL 606114546
Phone: (312) 695-6868
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: 2024-05-21
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 |
|---|---|---|---|---|
| I20210818001505 | I | Physician Assistant | IA | TBD |
| I20240521002772 | I | Physician Assistant | TX | 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 160 | 149 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 138 | 128 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 14 | 14 | $0 |
Insurance plans in this area (ZIP 60611)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IA | |
| Emergency Medicine | IL | |
| Physician Assistant | IA | |
| Emergency Medicine | IA | |
| Emergency Medicine | TX | |
| Nurse Practitioner | IA | |
| Emergency Medicine | IA |
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