Karen Ellen Joynt Maddox, MD
Cardiovascular Disease Physician · Saint Louis, MO
Karen Ellen Joynt Maddox, MD is a cardiovascular disease physician with a practice address in Saint Louis, Missouri, and NPI 1104028786, issued on Jun 5, 2007. Check the license (Missouri 2017013259, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Karen Ellen Joynt Maddox
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 2017013259 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4921 Parkview PL, Saint Louis, MO 63110
- Phone
- (314) 362-1291
- Enumerated
- Jun 5, 2007
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-4278
- Medicaid ID
- 200045186 MO
- Medicare enrollment
- Enrolled (PECOS I20170828003006); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 446 in Missouri → Look up another NPI →
Also registered at 4921 Parkview PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohammed Abbasi, MDPulmonary Disease Physician1497097083
- Helen Adams, AGNPGerontology Nurse Practitioner1730836776
- Muyibat Adelani, MDAdult Reconstructive Orthopaedic Surgery Physician1396908042
- Foluso Ademuyiwa, MDMedical Oncology Physician1083875538
- Syed Adil, MDAdult Reconstructive Orthopaedic Surgery Physician1467942953
- Homaa Ahmad, MDCardiovascular Disease Physician1477635092
Verify Karen Ellen Joynt Maddox 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 2017013259Check 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).
Karen Ellen Joynt Maddox among 446 cardiovascular disease physician records in Missouri
Karen Ellen Joynt Maddox, MD is one of 446 cardiovascular disease physician records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 60% of them.
- NPI issued2007 · 60% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2004 · median 1998 among the 293 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 207RC0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Missouri
There are 446 cardiovascular disease physician records in Missouri.
All 446 in Missouri → Every provider in Saint Louis → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- William Bowen, MDSaint Louis, MO 631101609815950
- Alan Braverman, MDSaint Louis, MO 631101477597805
- Sharon Cresci, MDSaint Louis, MO 631101083630214
- Victor Davila, MDSaint Louis, MO 631101235173675
- Gerald Dorn, MDSaint Louis, MO 631101386600302
- John Gorcsan, MDSaint Louis, MO 631101942273578
- Robert Gropler, MDSaint Louis, MO 631101194752220
- Andrew Kates, MDSaint Louis, MO 631101376585638
Common questions
What is Karen Ellen Joynt Maddox, MD's NPI number?
Karen Ellen Joynt Maddox, MD's National Provider Identifier (NPI) is 1104028786, issued on Jun 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Ellen Joynt Maddox, MD located?
The NPPES record lists a practice address at 4921 Parkview PL, Saint Louis, MO, 63110. Phone: (314) 362-1291. Providers update this record themselves, so call before visiting.
How can I verify Karen Ellen Joynt Maddox, MD's license?
NPPES lists Missouri license number 2017013259, 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 Karen Ellen Joynt Maddox, 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.