NPPES file of Aug 9, 2026

Theresa H. Ronan, M.D.

Hospitalist Physician · Chicago, IL

Theresa H. Ronan, M.D. is a hospitalist physician with a practice address in Chicago, Illinois, and NPI 1669636288, issued on Jul 13, 2008. Check the license (Illinois 036140910, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669636288
Name
Theresa H. Ronan
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License numbers
036140910 IL
125054498 IL
MD20110137 NM
Self-reported in NPPES; status is on the state search
Practice location
251 E Huron St Ste 16-738, Chicago, IL 60611
Phone
(312) 926-5924
Enumerated
Jul 13, 2008
Record last updated
Jun 10, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(312) 926-6134
Medicare enrollment
Enrolled (PECOS I20111004000429); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2008
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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8 nearest hospitalist physician records → All 1,535 in Illinois → Look up another NPI →

Also registered at 251 E Huron St Ste 16-738

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kazuko Abe, P.A.Physician Assistant1881840783
  2. Frank Aguilar, M.D.Hospitalist Physician1659802270
  3. Ali Ahmed, MDHospitalist Physician1154841286
  4. Bilal Al-Khalil, MDHospitalist Physician1255825220
  5. Juan Alban, MDHematology & Oncology Physician1114489192
  6. Mohammed AllawHospitalist Physician1558883058

Verify Theresa H. Ronan 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 036140910    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. St Vincent HospitalSanta Fe, NM

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

Theresa H. Ronan among 1,535 hospitalist physician records in Illinois

Theresa H. Ronan, M.D. is one of 1,535 hospitalist physician records with a practice address in Illinois. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 19% of them.

  • NPI issued2008 · 19% of these records are older, 74% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated2008 · median 2013 among the 1,339 with a school on file
  • Record last updated2017 · 32% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in Illinois

There are 1,535 hospitalist physician records in Illinois.

All 1,535 in Illinois → Every provider in Chicago → Hospitalist Physician nationwide →

The 8 hospitalist physician records with the nearest ZIP codes

  1. Abby Agulnek, DOChicago, IL 606111689662942
  2. Jeffrey Barsuk, MDChicago, IL 606111528031333
  3. Anjali Desai, M.D.Chicago, IL 606111730126004
  4. Vinnette Forde, MDChicago, IL 606111033174164
  5. Peter Kallas, M.D.Chicago, IL 606111760425797
  6. Michael Kornfeld, MDChicago, IL 606111538198833
  7. Nita Kulkarni, MDChicago, IL 606111790717460
  8. Matthew Landler, MDChicago, IL 606111740212398

Common questions

What is Theresa H. Ronan, M.D.'s NPI number?

Theresa H. Ronan, M.D.'s National Provider Identifier (NPI) is 1669636288, issued on Jul 13, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Theresa H. Ronan, M.D. located?

The NPPES record lists a practice address at 251 E Huron St Ste 16-738, Chicago, IL, 60611. Phone: (312) 926-5924. Providers update this record themselves, so call before visiting.

How can I verify Theresa H. Ronan, M.D.'s license?

NPPES lists Illinois license number 036140910, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.