Doctor profile · Federal record

Dr. Catherine Park Leonard, MD

Radiation Oncology Physician (CMS: Radiation Oncology) · Barrington, IL

  • NPI 1710149968
  • Accepts Medicare
  • MIPS 91.3 / 100 · 2023
  • 20 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
27750 W Highway 22, Suite G50
Barrington, IL 600102379
(847) 842-0300
fax (847) 842-0370
Mailing address
700 Commerce Dr, Suite 500
Oak Brook, IL 605231546

Credentials & registration

NPPES · NUCC
NPI registered
June 2008 — 18 yrs on file
Profile last updated
December 27, 2021
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
2085R0001X — NUCC code
State license (1)
Illinois #036131497
Medicaid
IL #036131497

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1710149968. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,773
Distinct HCPCS
10
Medicare allowed
$259,935
HCPCS Description Services Patients Avg allowed
77014 Ct guidance for insertion of radiation therapy fields 704 68 $46
77427 Radiation treatment management, 5 treatment sessions 305 113 $199
99213 Established patient office or other outpatient visit, 20-29 minutes 294 209 $68
77334 Design and construction of complex radiation treatment device 288 99 $62
77300 Calculation of radiation therapy dose 267 76 $34
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy 215 22 $21
77263 Complex radiation therapy planning 117 107 $176
99205 New patient office or other outpatient visit, 60-74 minutes 95 95 $186
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 73 69 $85
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 56 47 $39

In context: peer comparison

Among 2 peers in Barrington Radiation Oncology Physician, average services per provider: 119. This provider delivers 23× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$229
Transactions
4
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Elekta, INC. 1 $125.00
Teleflex LLC 2 $59.98
Progenics Pharmaceuticals, INC. 1 $43.71

By nature of payment

Food and Beverage
$229

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
37
Patients
18
Total drug cost
$863
Drug Type Claims Patients Total cost
Tamsulosin Hcl Generic 26 18 $788
Chlorhexidine Gluconate Generic 11 0 $75

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Catherine Park Leonard's medical specialty?
Dr. Catherine Park Leonard practices Radiation Oncology Physician in Barrington, IL.
Where does Dr. Catherine Park Leonard practice?
Dr. Catherine Park Leonard practices at 27750 W Highway 22, Barrington, IL 600102379. Office phone: 8478420300.
What is Dr. Catherine Park Leonard's NPI?
Dr. Catherine Park Leonard's National Provider Identifier (NPI) is 1710149968, issued by NPPES.
Does Dr. Catherine Park Leonard accept Medicare assignment?
Yes. Dr. Catherine Park Leonard accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Catherine Park Leonard commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Radiation treatment management, 5 treatment sessions (HCPCS 77427); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.