Doctor profile · Federal record

Dr. Helen Lonergan-Thomas, APN, CCNS-BC

Acute Care Clinical Nurse Specialist (CMS: Certified Clinical Nurse Specialist (CNS)) · Oak Lawn, IL

  • NPI 1720221088
  • Accepts Medicare
  • 19 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
10837 S Cicero Ave Ste 200
Oak Lawn, IL 604536459
(708) 636-7575
fax (708) 636-6193
Additional location
3825 Highland Ave
Downers Grove, IL 605151552
(630) 719-4799
fax (630) 963-7420
Mailing address
29373 Network Pl
Chicago, IL 606731293

Credentials & registration

NPPES · NUCC
NPI registered
April 2009 — 17 yrs on file
Profile last updated
April 14, 2025
Year of graduation
2007 — 19 yrs since
Specialty taxonomy
364SA2100X — NUCC code
State license (1)
Illinois #209.007100

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1720221088. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
181
Distinct HCPCS
1
Medicare allowed
$11,920
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 181 95 $66

In context: peer comparison

Among 1 peers in Oak Lawn Acute Care Clinical Nurse Specialist, average services per provider: 181. This provider delivers 1.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
383
Patients
171
Total drug cost
$43,142
Drug Type Claims Patients Total cost
Clopidogrel (Clopidogrel Bisulfate) Brand 140 76 $1,745
Brilinta (Ticagrelor) Brand 47 15 $23,224
Atorvastatin Calcium Generic 45 24 $529
Metoprolol Succinate Generic 28 22 $318
Furosemide Generic 25 12 $84
Metoprolol Tartrate Generic 22 11 $121
Eliquis (Apixaban) Brand 20 0 $16,741
Spironolactone Generic 16 0 $69
Losartan Potassium Generic 15 11 $124
Carvedilol Generic 14 0 $87

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Helen Lonergan-Thomas's medical specialty?
Dr. Helen Lonergan-Thomas practices Acute Care Clinical Nurse Specialist in Oak Lawn, IL.
Where does Dr. Helen Lonergan-Thomas practice?
Dr. Helen Lonergan-Thomas practices at 10837 S Cicero Ave Ste 200, Oak Lawn, IL 604536459. Office phone: 7086367575.
What is Dr. Helen Lonergan-Thomas's NPI?
Dr. Helen Lonergan-Thomas's National Provider Identifier (NPI) is 1720221088, issued by NPPES.
Does Dr. Helen Lonergan-Thomas accept Medicare assignment?
Yes. Dr. Helen Lonergan-Thomas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Helen Lonergan-Thomas commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.