Dr. Catherine K. Park Leonard, MD
- Medicare services, 2024
- 2,289
- Medicare patients, 2024
- 378
- Part D claims, 2024
- 72
- MIPS score, 2024
- 81
- Hospital affiliations
- 5
- Practice address
- 450 West Highway 22, Barrington, IL 60010
- Practice phone
- Call (847) 381-9600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Park Leonard's professional email, personal email and mobile number
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Dr. Catherine K. Park Leonard is a radiation oncologist in Barrington, Illinois
Dr. Park Leonard practices at Advocate Good Shepherd Hospital in Barrington, Illinois, part of Advocate Health.
Dr. Park Leonard's NPI, 1710149968, was assigned on June 30, 2008. Dr. Park Leonard holds Illinois license 036131497.
- NPI
- 1710149968NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476709189
- NPI enumeration date
- June 30, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 381-9600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine K. Park Leonard practices at Advocate Good Shepherd Hospital in Barrington, Illinois
Dr. Park Leonard's primary practice is Advocate Good Shepherd Hospital, at 450 West Highway 22, Barrington, IL 60010 in Lake County. The practice phone is (847) 381-9600.
- Advocate Good Shepherd Hospital450 West Highway 22, Barrington, IL 60010 · Lake CountyPhone(847) 381-9600
Source: Dmand AI Affiliation Data
Dr. Catherine K. Park Leonard is affiliated with 6 sites of care and 1 medical group
Dr. Park Leonard's primary practice is Advocate Good Shepherd Hospital in Barrington, Illinois, part of Advocate Health. Dr. Park Leonard is also affiliated with Advocate Lutheran General Hospital. The medical group on file is Radiation Oncology Consultants. Dmand AI also links Dr. Park Leonard to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Catherine K. Park Leonard's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Park Leonard practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Good Shepherd Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Catherine K. Park Leonard is one of 243 radiation oncologists in Illinois
Radiation oncology is Dr. Park Leonard's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Park Leonard is licensed in Illinois.
Specialties and state licenses
- Radiation oncology, IllinoisPrimary
Radiation oncologists near Dr. Park Leonard
Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Catherine K. Park Leonard billed Medicare for 2,289 services in 2024
CMS data shows 2,289 Medicare services from Dr. Park Leonard across 20 procedure codes in 2024, for 378 Medicare patients. Medicare paid $166,674 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Park Leonard's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,0852024: 1,77015%
- Office and hospital visits
- 2023: 4472024: 4402%
- Other services
- 2023: 2412024: 7967%
Dr. Park Leonard compared with the Illinois median for radiation oncologists, 2024
- Dr. Park Leonard
- Illinois median
- Medicare services
- 2,289vs 1,45957% above
- Medicare patients
- 378vs 1762.1 times
- Part D claims
- 35vs 34Close to median
Medians across 231 radiation oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Park Leonard's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine K. Park Leonard treated 378 Medicare patients in 2024, average age 75
CMS counts 378 Medicare patients who saw Dr. Park Leonard in 2024. The largest group is 65 to 74, with 177 patients. 75% of them have cancer, and 75% have high blood pressure. 4% are also on Medicaid. Their average risk score is 1.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Park Leonard's median patient age at 69, with 66% women.
Dr. Park Leonard's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Park Leonard's Medicare patients by sex, 2024
- Women21056%
- Men16844%
Chronic conditions among Dr. Park Leonard's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Ischemic heart disease32%
- Diabetes26%
- Anxiety25%
- COPD23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Park Leonard's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women66%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Catherine K. Park Leonard wrote 72 Medicare Part D claims in 2024
In 2024, Dr. Park Leonard wrote 72 Medicare Part D claims for 48 patients. 100% of them were for generic drugs. CMS names the drug for 35 of them, across 2 drugs with 11 or more claims each, at $560 in total drug cost. In 2023, CMS named 37 claims across 2 drugs.
Dr. Park Leonard's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Park Leonard's Part D claims, 2024
- Opioids18%13 of 72 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 372024: 355%
Drugs named by CMS: 2 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Catherine K. Park Leonard scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Park Leonard for performance year 2024, reported individually. Dr. Park Leonard accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Park Leonard's MIPS scores, performance year 2024
- 81of 100Final score
- 100of 100Quality
- 0of 100Improvement Activities
- 87of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Catherine K. Park Leonard received $2,613 in industry payments from 2016 to 2025
CMS Open Payments shows 15 general payments to Dr. Park Leonard from 10 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 38% of the total. Carl Zeiss Meditec, Inc. paid the most, $1,000.
General payments to Dr. Park Leonard by program year, 2016 to 2025
General payments to Dr. Park Leonard by kind, 2016 to 2025
- Speaker and faculty fees$1,00038%
- Education speaker fees$1,00038%
- Food and beverage$61323%
Companies that paid Dr. Park Leonard the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Catherine K. Park Leonard's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Catherine K. Park Leonard
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Catherine K. Park Leonard's NPI number?
Dr. Catherine K. Park Leonard's NPI number is 1710149968. It was assigned on June 30, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine K. Park Leonard?
Dr. Catherine K. Park Leonard is a radiation oncologist in Barrington, Illinois. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Catherine K. Park Leonard practice?
Dr. Park Leonard practices at 450 West Highway 22, Barrington, IL 60010. Dr. Park Leonard's primary practice is Advocate Good Shepherd Hospital in Barrington, Illinois, part of Advocate Health. Dmand AI also links Dr. Park Leonard to 3 hospitals and 1 group practice or clinic.
What is Dr. Catherine K. Park Leonard's office phone number?
The practice phone on file for Dr. Park Leonard is (847) 381-9600.
What is Dr. Catherine K. Park Leonard's medical license number?
Dr. Park Leonard holds Illinois license 036131497.
Which hospitals is Dr. Catherine K. Park Leonard affiliated with?
Dr. Park Leonard practices at Advocate Good Shepherd Hospital in Barrington, Illinois. Dr. Park Leonard is also affiliated with Advocate Lutheran General Hospital. Dmand AI links Dr. Park Leonard to 3 more hospitals.
What medical group is Dr. Catherine K. Park Leonard part of?
Dr. Park Leonard is linked to Radiation Oncology Consultants.
Does Dr. Catherine K. Park Leonard accept Medicare?
Yes. CMS data shows Dr. Park Leonard billed Medicare for 2,289 services in 2024, and Dr. Park Leonard accepts Medicare assignment.
What is Dr. Catherine K. Park Leonard's MIPS score?
Dr. Park Leonard's MIPS final score for performance year 2024 is 81 out of 100, reported individually.
How many Medicare patients does Dr. Catherine K. Park Leonard see?
CMS counts 378 Medicare patients who saw Dr. Park Leonard in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Catherine K. Park Leonard bill to Medicare?
In 2024, Dr. Park Leonard's most billed Medicare services were radiation oncology (77014), office visit, established patient (99213) and radiation oncology (77300).
What drugs does Dr. Catherine K. Park Leonard prescribe most?
In 2024 Medicare Part D data, Dr. Park Leonard's most prescribed drugs by claims were Tamsulosin HCl and Dexamethasone.
Has Dr. Catherine K. Park Leonard received payments from drug or device companies?
CMS Open Payments shows $2,613 in general payments to Dr. Park Leonard from 10 companies from 2016 to 2025. The largest total came from Carl Zeiss Meditec, Inc.
How long has Dr. Catherine K. Park Leonard been practicing?
Dr. Park Leonard graduated from medical school in 2006, 20 years ago.
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