Mark Justin Maynard, DO
Emergency Medicine Physician · Dallas, TX
Mark Justin Maynard, DO is an emergency medicine physician with a practice address in Dallas, Texas, and NPI 1598021925, issued on Apr 10, 2012. Check the license (Texas P8945, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Justin Maynard
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- P8945 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5201 Harry Hines Blvd, Dallas, TX 75235
- Phone
- (214) 590-8058
- Enumerated
- Apr 10, 2012
- Record last updated
- Sep 2, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 5201 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 Mark Justin Maynard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P8945Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average emergency medicine physician in 2024
271 Medicare Part D claims for 189 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 41 claims were for opioids.
Most prescribed
- Diclofenac Sodium37 claims
- Hydrocodone-Acetaminophen35 claims
- Ondansetron Odt31 claims
- Cefdinir29 claims
- Methylprednisolone17 claims
- Doxycycline Monohydrate11 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.
Mark Justin Maynard among 4,885 emergency medicine physician records in Texas
Mark Justin Maynard, DO 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 2012, is newer than 55% of them.
- NPI issued2012 · 55% of these records are older, 41% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2016 · 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 Mark Justin Maynard, DO's NPI number?
Mark Justin Maynard, DO's National Provider Identifier (NPI) is 1598021925, issued on Apr 10, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Justin Maynard, DO located?
The NPPES record lists a practice address at 5201 Harry Hines Blvd, Dallas, TX, 75235. Phone: (214) 590-8058. Providers update this record themselves, so call before visiting.
How can I verify Mark Justin Maynard, DO's license?
NPPES lists Texas license number P8945, 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 Mark Justin Maynard, DO prescribe under Medicare Part D?
In 2024, Mark Justin Maynard, DO had 271 Medicare Part D claims for 189 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.