Dr. Kathryn Breen Leonard, MD
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2010
- Practice address
- One Childrens Place, Saint Louis, MO 63110
- Practice phone
- Call (314) 454-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leonard's professional email, personal email and mobile number
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Dr. Kathryn Breen Leonard is a pediatric emergency medicine (pediatrics) physician in Saint Louis, Missouri
Dr. Leonard practices at St. Louis Children's Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Leonard's NPI, 1508179383, was assigned on July 21, 2010. Dr. Leonard graduated from Saint Louis University School of Medicine in 2008. Dr. Leonard holds Missouri license 2013022032.
- NPI
- 1508179383NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880988260
- NPI enumeration date
- July 21, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 454-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathryn Breen Leonard practices at 2 locations in Saint Louis, Missouri
Dr. Leonard's primary practice is St. Louis Children's Hospital, at One Childrens Place, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 454-6000. Dr. Leonard also practices at St Louis Childrens Hospital, 1 Childrens Pl, Saint Louis, MO 63110.
- St. Louis Children's HospitalPrimaryOne Childrens Place, Saint Louis, MO 63110 · St. Louis CityPhone(314) 454-6000
- St Louis Childrens Hospital1 Childrens Pl, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 454-6000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Kathryn Breen Leonard is affiliated with 1 site of care and 1 medical group
Dr. Leonard's primary practice is St. Louis Children's Hospital in Saint Louis, Missouri, part of BJC Health. The medical group on file is WashU Medicine Psychiatry.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kathryn Breen Leonard's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leonard practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Louis Children's Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across BJC Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kathryn Breen Leonard is one of 68 pediatric emergency medicine (pediatrics) physicians in Missouri
Pediatric emergency medicine is Dr. Leonard's primary specialty in the NPI Registry, under taxonomy code 2080P0204X. Dr. Leonard is licensed in Missouri.
Specialties and state licenses
- Pediatric emergency medicine (pediatrics), MissouriPrimary
Pediatric emergency medicine (pediatrics) physicians near Dr. Leonard
Counts of pediatric emergency medicine (pediatrics) physicians 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. Kathryn Breen Leonard's patients have a median age of 9
Across all payers, Dmand AI patient panel data puts Dr. Leonard's median patient age at 9, with 56% women.
Dr. 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 9
Patient panel by sex, all payers
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Kathryn Breen Leonard scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Leonard for performance year 2024, reported as part of a group. Dr. Leonard accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Leonard's MIPS scores, performance year 2024
- 84of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 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
Dr. Kathryn Breen Leonard graduated from Saint Louis University School of Medicine
Dr. Leonard graduated from Saint Louis University School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathryn Breen 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Kathryn Breen 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. Kathryn Breen Leonard's NPI number?
Dr. Kathryn Breen Leonard's NPI number is 1508179383. It was assigned on July 21, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathryn Breen Leonard?
Dr. Kathryn Breen Leonard is a pediatric emergency medicine (pediatrics) physician in Saint Louis, Missouri. The primary specialty in the NPI Registry is Pediatric Emergency Medicine (Pediatrics) Physician (taxonomy code 2080P0204X).
Where does Dr. Kathryn Breen Leonard practice?
Dr. Leonard practices at One Childrens Place, Saint Louis, MO 63110. Dr. Leonard also practices at 1 Childrens Pl, Saint Louis, MO 63110. Dr. Leonard's primary practice is St. Louis Children's Hospital in Saint Louis, Missouri, part of BJC Health.
What is Dr. Kathryn Breen Leonard's office phone number?
The practice phone on file for Dr. Leonard is (314) 454-6000.
What is Dr. Kathryn Breen Leonard's medical license number?
Dr. Leonard holds Missouri license 2013022032.
Which hospitals is Dr. Kathryn Breen Leonard affiliated with?
Dr. Leonard practices at St. Louis Children's Hospital in Saint Louis, Missouri.
What medical group is Dr. Kathryn Breen Leonard part of?
Dr. Leonard is linked to WashU Medicine Psychiatry.
Does Dr. Kathryn Breen Leonard accept Medicare?
Yes. CMS lists Dr. Leonard as accepting Medicare assignment.
What is Dr. Kathryn Breen Leonard's MIPS score?
Dr. Leonard's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Where did Dr. Kathryn Breen Leonard go to medical school?
Dr. Leonard graduated from Saint Louis University School of Medicine in 2008.
How long has Dr. Kathryn Breen Leonard been practicing?
Dr. Leonard graduated from medical school in 2008, 18 years ago.
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