Kathleen Byrnes, MD
Anatomic Pathology & Clinical Pathology Physician · Saint Louis, MO
Kathleen Byrnes, MD is an anatomic pathology & clinical pathology physician with a practice address in Saint Louis, Missouri, and NPI 1417399676, issued on Jul 29, 2013. Check the license (Missouri 2017008742, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Kathleen Byrnes
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 2017008742 MO
Self-reported in NPPES; status is on the state search - Practice location
- 425 S Euclid Ave, Saint Louis, MO 63110
- Phone
- (314) 362-5641
- Enumerated
- Jul 29, 2013
- Record last updated
- Apr 15, 2025
- Fax
- (314) 362-0369
- Medicaid ID
- 200057464 MO
- Medicare enrollment
- Enrolled (PECOS I20180821003242); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 348 in Missouri → Look up another NPI →
Also registered at 425 S Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amir Kucharski, MD, PHDOrthopaedic Surgery Physician1558295931
Verify Kathleen Byrnes 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 2017008742Check 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).
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Byrnes among 348 anatomic pathology & clinical pathology physician records in Missouri
Kathleen Byrnes, MD is one of 348 anatomic pathology & clinical pathology physician records with a practice address in Missouri. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 72% of them.
- NPI issued2013 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2013 · median 2004 among the 189 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Missouri
There are 348 anatomic pathology & clinical pathology physician records in Missouri.
All 348 in Missouri → Every provider in Saint Louis → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Timothy Amukele, MDSaint Louis, MO 631101871503276
- Elizabeth Brunt, MDSaint Louis, MO 631101275547754
- Dengfeng Cao, MDSaint Louis, MO 631101205894573
- John Frater, MDSaint Louis, MO 631101407873920
- Anjum Hassan, MDSaint Louis, MO 631101184640302
- Necat Havlioglu, MDSaint Louis, MO 631101033162094
- Phyllis Huettner, MDSaint Louis, MO 631101730105057
- Hannah Krigman, MDSaint Louis, MO 631101336114164
Common questions
What is Kathleen Byrnes, MD's NPI number?
Kathleen Byrnes, MD's National Provider Identifier (NPI) is 1417399676, issued on Jul 29, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Byrnes, MD located?
The NPPES record lists a practice address at 425 S Euclid Ave, Saint Louis, MO, 63110. Phone: (314) 362-5641. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Byrnes, MD's license?
NPPES lists Missouri license number 2017008742, 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 Kathleen Byrnes, 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.