THOMAS L FISHER JR. MD., M.P.H
NPI 1275528499
Emergency Medicine in Chicago, IL
About Thomas L Fisher Jr. Md., M.p.h NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS L FISHER JR. MD., M.P.H (NPI 1275528499) is an individual emergency medicine provider in Chicago, Illinois, licensed in Indiana (01058727) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.
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 (PECOS)
Thomas L Fisher Jr. Md., M.p.h is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Thomas Fisher reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 1,905 clinicians in this Medicare group
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 2,237 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60637 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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.
CHICAGO, IL 60637
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 Fisher's NPI number?
The NPI number for Thomas Fisher is 1275528499. It was assigned to this individual provider in the NPPES registry on September 14, 2005.
Where is Thomas Fisher located?
Thomas Fisher practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (773) 702-9501.
What is Thomas Fisher's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Thomas Fisher enrolled in Medicare?
Yes. Thomas Fisher is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Thomas Fisher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Fisher reassigns Medicare benefits to 2 organizations: The University Of Chicago Medical Center (Chicago, IL) and University Of Chicago (Chicago, IL). 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 Fisher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Fisher accept?
Health plans from Oscar Health list Thomas Fisher 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.
When was this NPI record last updated?
The NPPES record for Thomas Fisher 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.
# Thomas L Fisher Jr., MD., M.P.H · NPI 1275528499
Emergency Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since September 14, 2005.
## Identity
- **NPI:** 1275528499 (Entity type: Individual)
- **Enumerated:** September 14, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 01058727 (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 5841 S MARYLAND AVE, Chicago, IL 60637-1447
- **Phone:** (773) 702-9501
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); University Of Chicago (NPI 1821048786, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN I11903 (IN); Medicare ID-Type Unspecified 496650 NNN (IN)
---
Source: [NPI Profile](https://npiprofile.com/npi/1275528499) · Data from the CMS NPPES public registry.