DANIEL CHAKOS (M.D.) – Internal Medicine Physician, NPI 1487034674
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
310 HEMATOLOGY/ONCOLOGY in MO
Provider Addresses for DANIEL CHAKOS (M.D.)
1 SALT CREEK LN STE 100
HINSDALE, IL 605212971
Phone: (630) 286-5500
Type: Mailing
3655 VISTA AVENUE, WEST PAVILION SUITE HEME/ONC
3RD FLOOR
ST. LOUIS, MO 63110
Phone: (314) 577-8854
Fax: (314) 773-1167
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 35 Open Payments records for all available years, with a total value of $786.
Total Amount is formed as General ($786) + Research ($0) + Ownership ($0) = $786.
Last reported payment date: 2024-11-18 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($171).
Total Amount
$786
General + Research + Ownership
Payments
35
Total payment records
General Amount
$786
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-18
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2021-09-03
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 |
|---|---|---|---|---|
| I20210903000597 | I | Hematology/Oncology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 372 | 135 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 120 | 65 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 79 | 47 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 77 | 75 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 62 | 47 | $0 |
Insurance plans in this area (ZIP 60521)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery | NC | |
| Nurse Practitioner | IL | |
| H E M A T O L O G Y/ O N C O L O G Y | IL | |
| - | IL | |
| H E M A T O L O G Y/ O N C O L O G Y | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| - | IL | |
| General Surgery | IL |
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