Kathryn Breen Leonard, MD
Pediatric Emergency Medicine (Pediatrics) Physician · Saint Louis, MO
Kathryn Breen Leonard, MD is a pediatric emergency medicine (pediatrics) physician with a practice address in Saint Louis, Missouri, and NPI 1508179383, issued on Jul 21, 2010. Check the license (Missouri 2013022032, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Kathryn Breen Leonard
- Credential
- MD
- Primary taxonomy
- Pediatric Emergency Medicine (Pediatrics) Physician 2080P0204X
- License number
- 2013022032 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Childrens PL, Saint Louis, MO 63110
- Phone
- (314) 454-2341
- Enumerated
- Jul 21, 2010
- Record last updated
- Apr 17, 2025
- Fax
- (314) 454-4345
- Medicaid ID
- 200032823 MO
- Entity
- Type 1 · individual
8 nearest pediatric emergency medicine (pediatrics) physician records → All 120 in Missouri → Look up another NPI →
Also registered at 1 Childrens PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohamed Abdelbaki, MDPediatric Hematology & Oncology Physician1508021361
- Christi Abeln, PNPPediatric Nurse Practitioner1023034253
- Loren Abernathy, PNPPediatric Nurse Practitioner1215583117
- Freddy-May Abisamra, CGCGenetic Counselor (M.S.)1306538111
- Manjusha Abraham, MDPediatric Critical Care Medicine Physician1508126699
- Philip Abraham, MDHospitalist Physician1720309016
Verify Kathryn Breen Leonard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2013022032Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Kathryn Breen Leonard among 120 pediatric emergency medicine (pediatrics) physician records in Missouri
Kathryn Breen Leonard, MD is one of 120 pediatric emergency medicine (pediatrics) physician records with a practice address in Missouri. 38% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 46% of them.
- NPI issued2010 · 46% of these records are older, 48% newer
- In a Medicare fileYes · 38% of these records are
- In the CMS Doctors and Clinicians fileNo · 30% of these records are
- Record last updated2025 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0204X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Emergency Medicine (Pediatrics) Physician providers in Missouri
There are 120 pediatric emergency medicine (pediatrics) physician records in Missouri.
All 120 in Missouri → Every provider in Saint Louis → Pediatric Emergency Medicine (Pediatrics) Physician nationwide →
The 8 pediatric emergency medicine (pediatrics) physician records with the nearest ZIP codes
- Tara Copper, MDSaint Louis, MO 631101417261967
- Joseph Gunn, MDSaint Louis, MO 631101982621488
- Kara Hennelly, MDSaint Louis, MO 631101528261344
- Dee Hodge, MDSaint Louis, MO 631101376561837
- David Jaffe, MDSaint Louis, MO 631101467470922
- Robert Kennedy, MDSaint Louis, MO 631101992723449
- Rachel Kowalsky, MDSaint Louis, MO 631101104038652
- Janet Luhmann, MDSaint Louis, MO 631101871519199
Common questions
What is Kathryn Breen Leonard, MD's NPI number?
Kathryn Breen Leonard, MD's National Provider Identifier (NPI) is 1508179383, issued on Jul 21, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Breen Leonard, MD located?
The NPPES record lists a practice address at 1 Childrens PL, Saint Louis, MO, 63110. Phone: (314) 454-2341. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Breen Leonard, MD's license?
NPPES lists Missouri license number 2013022032, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Kathryn Breen Leonard, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.