Marshall Gaynor Howell
Emergency Medicine Physician · Dallas, TX
Marshall Gaynor Howell is an emergency medicine physician with a practice address in Dallas, Texas, and NPI 1407352792, issued on Apr 4, 2018. Check the license (Texas U1921, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marshall Gaynor Howell
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- U1921 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6201 Harry Hines Blvd, Dallas, TX 75235
- Phone
- (214) 648-3916
- Enumerated
- Apr 4, 2018
- Record last updated
- Oct 24, 2023
- Medicare enrollment
- Enrolled (PECOS I20231110001828); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 6201 Harry Hines Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marshall Gaynor Howell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license U1921Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average emergency medicine physician in 2024
126 Medicare Part D claims for 79 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- 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).
Marshall Gaynor Howell among 4,885 emergency medicine physician records in Texas
Marshall Gaynor Howell is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 77% of them.
- NPI issued2018 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2020 · median 2013 among the 2,779 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
512 emergency medicine physician records list a practice address in Dallas
They are 512 of the 36,304 NPPES records with a practice address in Dallas, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Dallas → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jonathan Clarke, MDDallas, TX 752351689747958
- Bradford Commons, MDDallas, TX 752351003015157
- Esequiel Guevara, M.D.Dallas, TX 752351205851102
- Amanda Jordan, MDDallas, TX 752351548461080
- Reagann McCreary, D.O.Dallas, TX 752351215131115
- Marquita Norman, MDDallas, TX 752351639188220
- Heather Owen, MDDallas, TX 752351235330556
- John Pease, MDDallas, TX 752351609840982
Common questions
What is Marshall Gaynor Howell's NPI number?
Marshall Gaynor Howell's National Provider Identifier (NPI) is 1407352792, issued on Apr 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Gaynor Howell located?
The NPPES record lists a practice address at 6201 Harry Hines Blvd, Dallas, TX, 75235. Phone: (214) 648-3916. Providers update this record themselves, so call before visiting.
How can I verify Marshall Gaynor Howell's license?
NPPES lists Texas license number U1921, 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 Marshall Gaynor Howell prescribe under Medicare Part D?
In 2024, Marshall Gaynor Howell had 126 Medicare Part D claims for 79 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Marshall Gaynor Howell'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.