THOMAS E NEFF (MD) – Anesthesiology Physician, NPI 1679504898
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,633 ANESTHESIOLOGY in IL
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Provider Addresses for THOMAS E NEFF (MD)
BLVD Vet River North, 375, West Erie Street, River North, Near North Side, Chicago, North Chicago Township, Cook County, Illinois, 60610, United States
# 413
CHICAGO, IL 606104010
Phone: (312) 952-9131
Type: Mailing
MacNeal Hospital, 3249, Oak Park Avenue, Berwyn, Cook County, Illinois, 60402, United States
ANESTHESIA DEPARTMENT
BERWYN, IL 604023429
Phone: (708) 783-3667
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $68.
Total Amount is formed as General ($68) + Research ($0) + Ownership ($0) = $68.
Last reported payment date: 2024-12-07 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($27).
Total Amount
$68
General + Research + Ownership
Payments
4
Total payment records
General Amount
$68
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $27 |
| Becton, Dickinson and Company | $22 |
| Edwards Lifesciences Corporation | $18 |
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: 2007-06-21
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 |
|---|---|---|---|---|
| I20070621000651 | I | Anesthesiology | KY | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 119 | 100 | $0 |
| 62323 | Injection of substance into lower spine canal using imaging guidance | 116 | 100 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 37 | 37 | $0 |
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 33 | 33 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 22 | 22 | $0 |
Insurance plans in this area (ZIP 60610)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ANESTHESIOLOGY | IL | 01402 | Anesthesia for open or endoscopic total knee joint replacement | 18 | 18 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | KY | |
| Certified Registered Nurse Anesthetist (Crna) | KY | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Certified Registered Nurse Anesthetist (Crna) | KY | |
| Certified Registered Nurse Anesthetist (Crna) | KY | |
| Certified Registered Nurse Anesthetist (Crna) | KY | |
| Certified Registered Nurse Anesthetist (Crna) | TN | |
| Certified Registered Nurse Anesthetist (Crna) | KY | |
| Certified Registered Nurse Anesthetist (Crna) | MO | |
| Certified Registered Nurse Anesthetist (Crna) | KY |
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