NPPES file of Aug 9, 2026

James Robert Mattson, MD

Emergency Medicine Physician · Evanston, IL

James Robert Mattson, MD is an emergency medicine physician with a practice address in Evanston, Illinois, and NPI 1396109971, issued on Apr 8, 2016. Check the license (Illinois 036166108, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396109971
Name
James Robert Mattson
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
036166108 IL
304319 NY
Self-reported in NPPES; status is on the state search
Practice location
2650 Ridge Ave. Emergency Medicine, Evanston, IL 60201
Phone
(847) 570-2114
Enumerated
Apr 8, 2016
Record last updated
Oct 4, 2024
Medicare enrollment
Enrolled (PECOS I20241017002239); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 2016
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify James Robert Mattson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036166108
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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36% fewer Medicare Part D claims than the average emergency medicine physician in 2024

144 Medicare Part D claims for 115 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 24 claims were for opioids.

  1. James Mattson144
  2. Specialty average226

Most prescribed

  1. Hydrocodone-Acetaminophen19 claims
  2. Prednisone11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. University OF Pittsburgh PhysiciansPittsburgh, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

James Robert Mattson among 3,291 emergency medicine physician records in Illinois

James Robert Mattson, MD is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 65% of them.

  • NPI issued2016 · 65% of these records are older, 32% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2016 · median 2012 among the 1,867 with a school on file
  • Record last updated2024 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

98 emergency medicine physician records list a practice address in Evanston

They are 98 of the 4,013 NPPES records with a practice address in Evanston, and 3,291 emergency medicine physician records in Illinois.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Richard Aronwald, M.D.Evanston, IL 602011518048149
  2. Serena Baqai, D.O.Evanston, IL 602011376543488
  3. Cynthia Carpo, DOEvanston, IL 602011487691218
  4. James Chadd, MDEvanston, IL 602011659393049
  5. Cecilia Cruz, MDEvanston, IL 602011518917681
  6. Alyssa Dayan, MDEvanston, IL 602011871547604
  7. Jorge Del Castillo, M.D.Evanston, IL 602011457434623
  8. Justin Griffith, MDEvanston, IL 602011497852206

Common questions

What is James Robert Mattson, MD's NPI number?

James Robert Mattson, MD's National Provider Identifier (NPI) is 1396109971, issued on Apr 8, 2016. An NPI identifies a provider in billing; it is not a license.

Where is James Robert Mattson, MD located?

The NPPES record lists a practice address at 2650 Ridge Ave. Emergency Medicine, Evanston, IL, 60201. Phone: (847) 570-2114. Providers update this record themselves, so call before visiting.

How can I verify James Robert Mattson, MD's license?

NPPES lists Illinois license number 036166108, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does James Robert Mattson, MD prescribe under Medicare Part D?

In 2024, James Robert Mattson, MD had 144 Medicare Part D claims for 115 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.