NPPES file of Aug 9, 2026

Heather Lynn McArthur, M.D.

Medical Oncology Physician · Dallas, TX

Heather Lynn McArthur, M.D. is a medical oncology physician with a practice address in Dallas, Texas, and NPI 1790940385, issued on Jul 23, 2008. Check the license (Texas T6640, 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
1790940385
Name
Heather Lynn McArthur
Credential
M.D.
Primary taxonomy
Medical Oncology Physician 207RX0202X
License numbers
T6640 TX
C146663 CA
255716 NY
Self-reported in NPPES; status is on the state search
Practice location
2201 Inwood Road 3RD Floor NC3.500, Dallas, TX 75390
Phone
(214) 645-4673
Enumerated
Jul 23, 2008
Record last updated
Apr 27, 2022
Medicare enrollment
Enrolled (PECOS I20220503001303); accepts Medicare assignment
Medical or professional school
University Of Toronto, Faculty Of Medicine, 2001
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 2201 Inwood Road 3RD Floor NC3.500

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

  1. Isaac ChanMedical Oncology Physician1356752646
  2. David Hsieh, M.D.Medical Oncology Physician1396184354

Verify Heather Lynn McArthur in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license T6640
    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

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86% fewer Medicare Part D claims than the average medical oncology physician in 2024

100 Medicare Part D claims for 27 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.

  1. Heather McArthur100
  2. Specialty average703

Most prescribed

  1. Letrozole31 claims
  2. Prochlorperazine Maleate15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

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: $66,321.89

45 payments; by number, the most common kind was consulting fee; the largest payer was Merck Sharp & Dohme LLC. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Heather McArthur$66,322
  2. Specialty average$11,773

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).

Heather Lynn McArthur among 547 medical oncology physician records in Texas

Heather Lynn McArthur, M.D. is one of 547 medical oncology physician records with a practice address in Texas. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 66% of them.

  • NPI issued2008 · 66% of these records are older, 28% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated2001 · median 2000 among the 414 with a school on file
  • Record last updated2022 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Oncology Physician providers in Texas

There are 547 medical oncology physician records in Texas.

The 8 medical oncology physician records with the nearest ZIP codes

  1. Salwan Al Mutar, M.DDallas, TX 753901508285313
  2. Carlos Arteaga, MDDallas, TX 753901902980014
  3. Yu Cao, MDDallas, TX 753901942566070
  4. Suzanne Conzen, MDDallas, TX 753901518029073
  5. David Gerber, M.D.Dallas, TX 753901336295039
  6. Joshua Gruber, M.D.Dallas, TX 753901437441904
  7. Hans Hammers, M.D., PH.D.Dallas, TX 753901851437909
  8. David Hsieh, M.D.Dallas, TX 753901396184354

Common questions

What is Heather Lynn McArthur, M.D.'s NPI number?

Heather Lynn McArthur, M.D.'s National Provider Identifier (NPI) is 1790940385, issued on Jul 23, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Heather Lynn McArthur, M.D. located?

The NPPES record lists a practice address at 2201 Inwood Road 3RD Floor NC3.500, Dallas, TX, 75390. Phone: (214) 645-4673. Providers update this record themselves, so call before visiting.

How can I verify Heather Lynn McArthur, M.D.'s license?

NPPES lists Texas license number T6640, 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.

How much does Heather Lynn McArthur, M.D. prescribe under Medicare Part D?

In 2024, Heather Lynn McArthur, M.D. had 100 Medicare Part D claims for 27 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.

What is Heather Lynn McArthur, M.D.'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.