MS. HELEN CATHERINE LONERGAN-THOMAS APN, CCNS-BC
NPI 1720221088
Clinical Nurse Specialist - Acute Care in Oak Lawn, IL

Active since April 15, 2009PECOS EnrolledAccepts Medicare Assignment
10837 S CICERO AVE STE 200, OAK LAWN, IL 60453(708) 636-7575(708) 636-6193 Get Directions Write a Review

NPPES record last updated: April 14, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Ms. Helen Catherine Lonergan-thomas Apn, Ccns-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. HELEN CATHERINE LONERGAN-THOMAS APN, CCNS-BC (NPI 1720221088) is an individual acute care provider in Oak Lawn, Illinois, licensed in Illinois (209.007100) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1720221088
Entity TypeIndividualFemale
Primary Taxonomy364SA2100X
Provider Legal NameMS. HELEN CATHERINE LONERGAN-THOMASCredential: APN, CCNS-BC
Location Address10837 S CICERO AVE STE 200Oak Lawn, IL 60453-6459
Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900
Fax(708) 636-6193
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateApril 15, 2009
Last NPPES UpdateApril 14, 2025
NPPES CertifiedApril 14, 2025
NPI 1720221088 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyClinical Nurse Specialist · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code364SA2100X
License Licensed in IL · 209.007100
10837 S CICERO AVE STE 200, Oak Lawn, IL 60453

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ms. Helen Catherine Lonergan-thomas Apn, Ccns-bc 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.

PECOS PAC ID1951455682
PECOS Enrollment IDI20100318000406
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
335 services137 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Advocate Christ Hospital & Medical Center

Acute Care Hospitals · Oak Lawn, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140208
Location4440 W 95th StreetOak Lawn, IL 60453 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Cardiovascular Disease)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Internal Medicine (Interventional Cardiology)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Internal Medicine (Interventional Cardiology)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Nurse Practitioner (Family)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Internal Medicine (Interventional Cardiology)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Internal Medicine (Interventional Cardiology)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Internal Medicine (Cardiovascular Disease)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453
Internal Medicine (Cardiovascular Disease)
10837 S CICERO AVE STE 200
OAK LAWN, IL 60453

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 Helen Lonergan-thomas's NPI number?

The NPI number for Helen Lonergan-thomas is 1720221088. It was assigned to this individual provider in the NPPES registry on April 15, 2009.

Where is Helen Lonergan-thomas located?

Helen Lonergan-thomas practices at 10837 S Cicero Ave Ste 200, Oak Lawn, IL 60453. The listed phone number is (708) 636-7575.

What is Helen Lonergan-thomas's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist, specializing in Acute Care, with taxonomy code 364SA2100X.

Is Helen Lonergan-thomas enrolled in Medicare?

Yes. Helen Lonergan-thomas 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.

Is Helen Lonergan-thomas affiliated with any hospitals?

According to CMS data, Helen Lonergan-thomas is affiliated with Advocate Christ Hospital & Medical Center.

When was this NPI record last updated?

The NPPES record for Helen Lonergan-thomas was last updated on April 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.