THOMAS E NEFF MD
NPI 1679504898
Anesthesiology in Berwyn, IL
About Thomas E Neff Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS E NEFF MD (NPI 1679504898) is an individual anesthesiology provider in Berwyn, Illinois and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Baptist Health Floyd, and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Thomas E Neff Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Thomas Neff reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Louisville, KY 40202
- Reassigned Medicare billing, Kentucky enrollment
- 526 clinicians in this Medicare group
Louisville, KY 40207
- Reassigned Medicare billing, Kentucky enrollment
- 4 clinicians in this Medicare group
Elizabethtown, KY 42701
- Reassigned Medicare billing, Kentucky enrollment
- 967 clinicians in this Medicare group
Arlington, TX 76006
- Reassigned Medicare billing, Indiana enrollment
- 287 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 17
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baptist Health Floyd
Acute Care Hospitals · New Albany, INBaptist Health Louisville
Acute Care Hospitals · Louisville, KYMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BERWYN, IL 60402
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Thomas Neff's NPI number?
The NPI number for Thomas Neff is 1679504898. It was assigned to this individual provider in the NPPES registry on July 5, 2006.
Where is Thomas Neff located?
Thomas Neff practices at 3249 Oak Park Ave Anesthesia Department, Berwyn, IL 60402. The listed phone number is (708) 783-3667.
What is Thomas Neff's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Thomas Neff enrolled in Medicare?
Yes. Thomas Neff is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Thomas Neff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Neff reassigns Medicare benefits to 4 organizations: Professional Anesthesia Services Of Kentucky PLLC (Louisville, KY), Northstar Anesthesia Of Kentucky Pain PLLC (Louisville, KY), Baptist Health Medical Group Inc (Elizabethtown, KY) and Northstar Anesthesia Of Indiana LLC (Arlington, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Neff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Neff accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter from Meridian list Thomas Neff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Thomas Neff affiliated with any hospitals?
According to CMS data, Thomas Neff is affiliated with Baptist Health Floyd and Baptist Health Louisville.
When was this NPI record last updated?
The NPPES record for Thomas Neff was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.