NPPES file of Aug 9, 2026

Matthew Stuart Lemler, MD

Pediatric Cardiology Physician · Dallas, TX

Matthew Stuart Lemler, MD is a pediatric cardiology physician with a practice address in Dallas, Texas, and NPI 1144282559, issued on Apr 3, 2006. Check the license (Texas H8203, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144282559
Name
Matthew Stuart Lemler
Credential
MD
Primary taxonomy
Pediatric Cardiology Physician 2080P0202X
License number
H8203 TX
Self-reported in NPPES; status is on the state search
Practice location
5323 Harry Hines Blvd, Dallas, TX 75390
Phone
(214) 730-5437
Enumerated
Apr 3, 2006
Record last updated
Apr 15, 2008 (not updated in 18 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20051018001081); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 1989
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5323 Harry Hines Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ali Abbas, MDStudent in an Organized Health Care Education/Training Program1447822507
  2. Laila Abbas, MDStudent in an Organized Health Care Education/Training Program1861132524
  3. Eileen Abbasi, CRNACertified Registered Nurse Anesthetist1588918981
  4. Mina Abbassi-Ghanavati, MDObstetrics & Gynecology Physician1154509610
  5. Abier Abdelnaby, M.D.Colon & Rectal Surgery Physician1831312503
  6. Ahmed AbdiStudent in an Organized Health Care Education/Training Program1952095184

Verify Matthew Stuart Lemler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license H8203
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 74.6 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.

  1. Qualityout of 100 · 30% of the final score56.1
  2. Costout of 100 · 30%59.2
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $16.85

1 payment: food and beverage; the largest payer was Abiomed. The 1,156 providers of this specialty with any payment received $2,864.57 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Matthew Lemler$16.85
  2. Specialty average$2,864.57

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. University OF Texas Southwestern Medical Center AT DallasDallas, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Matthew Stuart Lemler among 325 pediatric cardiology physician records in Texas

Matthew Stuart Lemler, MD is one of 325 pediatric cardiology physician records with a practice address in Texas. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 64% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1989 · median 2004 among the 163 with a school on file
  • Record last updated2008 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0202X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Cardiology Physician providers in Texas

There are 325 pediatric cardiology physician records in Texas.

The 8 pediatric cardiology physician records with the nearest ZIP codes

  1. Shannon Blalock, MDDallas, TX 753901285825505
  2. Vasiliki Dimas, MDDallas, TX 753901639102148
  3. Abhay Divekar, MD, MBBSDallas, TX 753901215125208
  4. David Fixler, MDDallas, TX 753901316916711
  5. Candace Gibbin, MDDallas, TX 753901093775017
  6. Lisa Heistein, MDDallas, TX 753901669408282
  7. Catherine Ikemba, MDDallas, TX 753901770549651
  8. Lynn Mahony, MDDallas, TX 753901164459145

Common questions

What is Matthew Stuart Lemler, MD's NPI number?

Matthew Stuart Lemler, MD's National Provider Identifier (NPI) is 1144282559, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Stuart Lemler, MD located?

The NPPES record lists a practice address at 5323 Harry Hines Blvd, Dallas, TX, 75390. Phone: (214) 730-5437. Providers update this record themselves, so call before visiting.

How can I verify Matthew Stuart Lemler, MD's license?

NPPES lists Texas license number H8203, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Matthew Stuart Lemler, MD's MIPS final score?

The 2023 MIPS final score is 74.6 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.