JAMES ROBERT MATTSON MD
NPI 1396109971
Emergency Medicine in Evanston, IL
About James Robert Mattson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES ROBERT MATTSON MD (NPI 1396109971) is an individual emergency medicine provider in Evanston, Illinois, licensed in Illinois (036166108) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Upmc Presbyterian Shadyside, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
James Robert Mattson 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
5Medicare enrollment records show James Mattson reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 clinicians in this Medicare group
East Liverpool, OH 43920
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 clinicians in this Medicare group
New York, NY 10024
- Reassigned Medicare billing, New York enrollment
- 245 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 67 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 4
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Upmc Presbyterian Shadyside
Acute Care Hospitals · Pittsburgh, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 James Mattson's NPI number?
The NPI number for James Mattson is 1396109971. It was assigned to this individual provider in the NPPES registry on April 8, 2016.
Where is James Mattson located?
James Mattson practices at 2650 Ridge Ave. Emergency Medicine, Evanston, IL 60201. The listed phone number is (847) 570-2114.
What is James Mattson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is James Mattson enrolled in Medicare?
Yes. James Mattson 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 James Mattson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Mattson reassigns Medicare benefits to 5 organizations: Endeavor Health Medical Group (Evanston, IL), University Of Pittsburgh Physicians (East Liverpool, OH), Icahn School Of Medicine At Mount Sinai (New York, NY), Fpa Hospital Based (New York, NY) and Icahn School Of Medicine At Mount Sinai (New York, NY). 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 James Mattson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is James Mattson affiliated with any hospitals?
According to CMS data, James Mattson is affiliated with Upmc Presbyterian Shadyside.
When was this NPI record last updated?
The NPPES record for James Mattson was last updated on October 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.