NPPES file of Aug 9, 2026

Mary Therese Lyons, RN, APN

Critical Care Medicine Clinical Nurse Specialist · Chicago, IL

Mary Therese Lyons, RN, APN is a critical care medicine clinical nurse specialist with a practice address in Chicago, Illinois, and NPI 1649475559, issued on Jun 19, 2007. Check the license with the Illinois board that licenses this profession; 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
1649475559
Name
Mary Therese Lyons
Credential
RN, APN
Primary taxonomy
Critical Care Medicine Clinical Nurse Specialist 364SC0200X
Practice location
1901 W Harrison St, Chicago, IL 60612
Phone
(312) 864-6000
Enumerated
Jun 19, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest critical care medicine clinical nurse specialist records → All 25 in Illinois → Look up another NPI →

Also registered at 1901 W Harrison St

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

  1. Elias Abate, M.D.Internal Medicine Physician1336712199
  2. Ayesha Abbasi, MDInternal Medicine Physician1376216705
  3. Milagros Abellera, APNNurse Practitioner1528076239
  4. Annette Abraham, MDInfectious Disease Physician1083195093
  5. Fidel Abrego, MDObstetrics & Gynecology Physician1245351824
  6. Bryan Acevedo, MDInternal Medicine Physician1598459612

Verify Mary Therese Lyons in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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
Find the Illinois license search

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Industry payments in 2024: $50.94

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 52 providers of this specialty with any payment received $678.21 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mary Lyons$50.94
  2. Specialty average$678.21

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

Mary Therese Lyons among 25 critical care medicine clinical nurse specialist records in Illinois

Mary Therese Lyons, RN, APN is one of 25 critical care medicine clinical nurse specialist records with a practice address in Illinois. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 12% of them.

  • NPI issued2007 · 12% of these records are older, 72% newer
  • In a Medicare fileYes · 48% of these records are
  • In the CMS Doctors and Clinicians fileNo · 20% of these records are
  • Record last updated2007 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 364SC0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Critical Care Medicine Clinical Nurse Specialist providers in Illinois

There are 25 critical care medicine clinical nurse specialist records in Illinois.

All 25 in Illinois → Every provider in Chicago → Critical Care Medicine Clinical Nurse Specialist nationwide →

The 8 critical care medicine clinical nurse specialist records with the nearest ZIP codes

  1. Elizabeth Day, MSN, APRN, CCNSChicago, IL 606121881458099
  2. Mary Dignan, CNSChicago, IL 606121801864806
  3. Kathleen Posa-Kearney, APRNChicago, IL 606121053122374
  4. Catherine Ryan, PHD, RN, APN, CCRNChicago, IL 606121982918496
  5. Kathleen Grady, CNSChicago, IL 606111548371230
  6. Linda Morris, PH.D., APN, CCNSChicago, IL 606111124240353
  7. Stacie Santangelo, RN, MS, APNChicago, IL 606111275848244
  8. Ashley VerbekeChicago, IL 606371952087280

Common questions

What is Mary Therese Lyons, RN, APN's NPI number?

Mary Therese Lyons, RN, APN's National Provider Identifier (NPI) is 1649475559, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mary Therese Lyons, RN, APN located?

The NPPES record lists a practice address at 1901 W Harrison St, Chicago, IL, 60612. Phone: (312) 864-6000. Providers update this record themselves, so call before visiting.

How can I verify Mary Therese Lyons, RN, APN's license?

Search the Illinois board that licenses this profession; the NPPES record confirms identity 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.

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.