DR. CHRISTOPHER CHARLES FROHNE (M.D.) – Critical Care Medicine (Internal Medicine) Physician, NPI 1164871752
Critical Care Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
965 CRITICAL CARE (INTENSIVISTS) in IL
Provider Addresses for DR. CHRISTOPHER CHARLES FROHNE (M.D.)
5841 S Maryland Ave
MC-7082
Chicago, IL 606371447
Phone: (773) 702-6840
Fax: (773) 702-2230
Type: Location
Harvester Drive, Burr Ridge, DuPage County, Illinois, 60527, United States
SUITE 110
BURR RIDGE, IL 605277594
Phone: (773) 702-1150
Type: Mailing
Au Bon Pain, 5841, South Maryland Avenue, Hyde Park, Chicago, Hyde Park Township, Cook County, Illinois, 60637, United States
MC-7082
CHICAGO, IL 606371447
Phone: (773) 702-6840
Fax: (773) 702-2230
Type: Location
6201 GREENLEIGH AVE FL 2
MIDDLE RIVER, MD 212202004
Phone: (410) 933-0000
Type: Mailing
5255 LOUGHBORO RD NW
WASHINGTON, DC 200162633
Phone: (202) 537-4000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 8 Open Payments records for all available years, with a total value of $172.
Total Amount is formed as General ($172) + Research ($0) + Ownership ($0) = $172.
Last reported payment date: 2024-11-05 • Largest payer in this snapshot: Inari Medical, Inc. ($172).
Total Amount
$172
General + Research + Ownership
Payments
8
Total payment records
General Amount
$172
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Inari Medical, Inc. | $172 |
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: 2026-01-27
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 12 Medicare enrollment records; no due dates published yet.
Enrollment records
12
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 |
|---|---|---|---|---|
| I20241021003758 | I | Critical Care (Intensivists) | DC | TBD |
| I20241202002256 | I | Infectious Disease | TX | TBD |
| I20250110001165 | I | Internal Medicine | VA | TBD |
| I20250124002899 | I | Infectious Disease | IN | TBD |
| I20250128000783 | I | Infectious Disease | LA | TBD |
| I20250204002388 | I | Infectious Disease | TN | TBD |
| I20250213000664 | I | Infectious Disease | AL | TBD |
| I20250306000582 | I | Infectious Disease | WV | TBD |
| I20250306000826 | I | Infectious Disease | SC | TBD |
| I20250312002985 | I | Infectious Disease | AR | TBD |
| I20250523000981 | I | Critical Care (Intensivists) | MD | TBD |
| I20260127002631 | I | Internal Medicine | MA | 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 | 54 | 34 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 30 | 30 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 14 | 13 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 60637)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | MD | |
| Internal Medicine, Pulmonary Disease, Critical Care (Intensivists), Internal Medicine, Critical Care (Intensivists), Internal Medicine, Pulmonary Disease | OH | |
| Emergency Medicine, Internal Medicine | NY | |
| Internal Medicine | MD | |
| Infectious Disease, Critical Care (Intensivists), Internal Medicine | VA | |
| Critical Care (Intensivists), Internal Medicine, Pulmonary Disease | MD | |
| Critical Care (Intensivists), Pulmonary Disease | MD | |
| Pulmonary Disease, Critical Care (Intensivists) | MD | |
| Internal Medicine, Critical Care (Intensivists) | MD | |
| Pulmonary Disease, Internal Medicine, Internal Medicine | PA |
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