DR. DARIN O'CONNOR HARNISCH (M.D.) – Specialist, NPI 1710910880
Specialist
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
475 INFECTIOUS DISEASE in IL
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Provider Addresses for DR. DARIN O'CONNOR HARNISCH (M.D.)
Jewel-Osco, 7900, North Milwaukee Avenue, Niles, Cook County, Illinois, 60714, United States
STE 231
NILES, IL 607143159
Phone:
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $13.
Total Amount is formed as General ($13) + Research ($0) + Ownership ($0) = $13.
Last reported payment date: 2023-10-13 • Largest payer in this snapshot: ABBVIE INC. ($13).
Total Amount
$13
General + Research + Ownership
Payments
1
Total payment records
General Amount
$13
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-10-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $13 |
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: 2004-07-01
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 |
|---|---|---|---|---|
| I20040701000128 | I | Infectious Disease | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 1,369 | 565 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 506 | 279 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 214 | 202 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 161 | 153 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 37 | 23 | $0 |
Insurance plans in this area (ZIP 60714)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Infectious Disease, Internal Medicine | IL | |
| Infectious Disease, Internal Medicine | IL | |
| Infectious Disease, Internal Medicine | IL |
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