NPPES file of Aug 9, 2026

Jason Tsai Chen, MD

Internal Medicine Physician · Chicago, IL

Jason Tsai Chen, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1972543239, issued on Jun 7, 2006. Check the license (Illinois 036126956, 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
1972543239
Name
Jason Tsai Chen
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
036126956 IL
A76587 CA
Self-reported in NPPES; status is on the state search
Practice location
8012 S Crandon Ave Ste 100, Chicago, IL 60617
Phone
(773) 356-5415
Enumerated
Jun 7, 2006
Record last updated
May 15, 2026
Fax
(773) 768-6141
Medicare enrollment
Enrolled (PECOS I20110325000858); accepts Medicare assignment
Medical or professional school
Perelman School Of Med At The University Of Pennsylvania, 1998
Telehealth
Offers telehealth (CMS)
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 Jason Tsai Chen 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 036126956
    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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42% fewer Medicare Part D claims than the average internal medicine physician in 2024

1,837 Medicare Part D claims for 113 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 58 claims were for opioids.

  1. Jason Chen1,837
  2. Specialty average3,176

Most prescribed

  1. Amlodipine Besylate124 claims
  2. Atorvastatin Calcium99 claims
  3. Albuterol Sulfate Hfa82 claims
  4. Metoprolol Succinate54 claims
  5. Lisinopril48 claims
  6. Ibuprofen42 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.

Industry payments in 2024: $36.46

2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jason Chen$36.46
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Jason Tsai Chen among 7,238 internal medicine physician records in Illinois

Jason Tsai Chen, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 61% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1998 · median 2003 among the 3,580 with a school on file
  • Record last updated2026 · 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 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2,867 internal medicine physician records list a practice address in Chicago

They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Neerja Ahlowalia, MDChicago, IL 606171508850439
  2. Chandra Anand, MDChicago, IL 606171962439646
  3. Virendra Bisla, MDChicago, IL 606171073682910
  4. David Buchanan, M.D.Chicago, IL 606171396772992
  5. Gomez Charleston, MDChicago, IL 606171124021795
  6. Pamela Cruz, M.D.Chicago, IL 606171710912142
  7. Laverne Currie, M.D.Chicago, IL 606171629003058
  8. Fred Daniels, MDChicago, IL 606171841293412

Common questions

What is Jason Tsai Chen, MD's NPI number?

Jason Tsai Chen, MD's National Provider Identifier (NPI) is 1972543239, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jason Tsai Chen, MD located?

The NPPES record lists a practice address at 8012 S Crandon Ave Ste 100, Chicago, IL, 60617. Phone: (773) 356-5415. Providers update this record themselves, so call before visiting.

How can I verify Jason Tsai Chen, MD's license?

NPPES lists Illinois license number 036126956, 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 Jason Tsai Chen, MD prescribe under Medicare Part D?

In 2024, Jason Tsai Chen, MD had 1,837 Medicare Part D claims for 113 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.