MARK J. KELLEN (MD) – Anesthesiology Physician, NPI 1023178647
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,631 ANESTHESIOLOGY in IL
Provider Addresses for MARK J. KELLEN (MD)
PO BOX 735263
CHICAGO, IL 606735263
Phone:
Type: Mailing
5875 E RIVERSIDE BLVD
ROCKFORD, IL 611144937
Phone: (815) 398-9491
Fax: (815) 381-7498
Type: Location
1225 JORDAN CREEK PKWY STE 180
WEST DES MOINES, IA 502662346
Phone: (515) 283-0463
Type: Mailing
Mercyhealth Hospital–Rockton Avenue, 2400, North Rockton Avenue, Rockford, Winnebago County, Illinois, 61103, United States
ROCKFORD, IL 611033655
Phone: (815) 971-6431
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: 2023-09-28
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 |
|---|---|---|---|---|
| I20120427000472 | I | Anesthesiology | IL | TBD |
| I20230928001484 | I | Anesthesiology | IA | 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 |
|---|---|---|---|---|
| 00142 | Anesthesia for lens surgery | 36 | 32 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 30 | 30 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 28 | 28 | $0 |
| 00812 | Anesthesia for exam of colon using an endoscope | 16 | 16 | $0 |
| 00813 | Anesthesia for procedure on small and large bowel using an endoscope | 11 | 11 | $0 |
Insurance plans in this area (ZIP 60673)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ANESTHESIOLOGY | IL | 00142 | Anesthesia for lens surgery | 71 | 66 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IA | |
| - | IA | |
| - | IA | |
| Certified Registered Nurse Anesthetist (Crna) | IA | |
| A N E S T H E S I O L O G Y | IA | |
| A N E S T H E S I O L O G Y | IA | |
| A N E S T H E S I O L O G Y | IA | |
| - | PA | |
| Certified Registered Nurse Anesthetist (Crna) | NC | |
| - | IA |
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