DR. GREGORY R OLSON (M.D.) – Infectious Disease Physician, NPI 1326428103
Infectious Disease Physician
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Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
475 INFECTIOUS DISEASE in IL
Provider Addresses for DR. GREGORY R OLSON (M.D.)
7804 W COLLEGE DR STE 1NW
PALOS HEIGHTS, IL 604631025
Phone:
Type: Mailing
180 HARVESTER DR STE 110
BURR RIDGE, IL 605276686
Phone: (773) 702-1150
Type: Mailing
5841 S MARYLAND AVE # MC5065
CHICAGO, IL 60637
Phone: (773) 702-2710
Type: Location
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 $35.
Total Amount is formed as General ($35) + Research ($0) + Ownership ($0) = $35.
Last reported payment date: 2024-11-06 • Largest payer in this snapshot: Astellas Pharma US Inc ($35).
Total Amount
$35
General + Research + Ownership
Payments
1
Total payment records
General Amount
$35
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Astellas Pharma US Inc | $35 |
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: 2020-05-07
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 |
|---|---|---|---|---|
| I20200507000263 | 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 | 1,061 | 348 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 284 | 254 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 36 | 18 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 35 | 33 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 32 | 25 | $0 |
Insurance plans in this area (ZIP 60463)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | IL | |
| Infectious Disease | IL | |
| Internal Medicine, Infectious Disease | IL | |
| Internal Medicine | IL | |
| Internal Medicine, Infectious Disease | IL | |
| Infectious Disease | IL | |
| Infectious Disease, Internal Medicine | IL | |
| Nurse Practitioner | IL | |
| Infectious Disease, Internal Medicine | OH | |
| Critical Care (Intensivists) | IL |
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