John B. Marshall, MD
Emergency Medicine Physician · Dallas, TX
John B. Marshall, MD is an emergency medicine physician with a practice address in Dallas, Texas, and NPI 1437135563, issued on Dec 20, 2005. Check the license (Texas M0164, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John B. Marshall
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- M0164 TX
Self-reported in NPPES; status is on the state search - Practice location
- 7777 Forest LN, Dallas, TX 75230
- Phone
- (972) 758-3598
- Enumerated
- Dec 20, 2005
- Record last updated
- Jul 9, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 173183801 TX
- Medicare enrollment
- Enrolled (PECOS I20201023001751); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 7777 Forest LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jillian AdamsPsychiatric/Mental Health Nurse Practitioner1033513031
- Jane Admire, MDOtolaryngology Physician1023139433
- Dessy Adont, APRN, AG-ACNPNurse Practitioner1710586870
- Alexandria Aguilar, CSFAOther Specialist/Technologist1376402784
- Azadeh Ajami, PSYDPsychologist1437278637
- Mustafa Al-Chalabi, MDEmergency Medicine Physician1417932948
Verify John B. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M0164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average emergency medicine physician in 2024
297 Medicare Part D claims for 184 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 49 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen45 claims
- Naproxen30 claims
- Azithromycin26 claims
- Prednisone25 claims
- Methocarbamol17 claims
- Dicyclomine Hcl16 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): 81.9 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).
Industry payments in 2024: $55.35
1 payment: food and beverage; the largest payer was Stryker Corporation. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Paragon Emergency Services LLCJacksonville, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John B. Marshall among 4,885 emergency medicine physician records in Texas
John B. Marshall, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2002 · median 2013 among the 2,779 with a school on file
- Record last updated2014 · 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
- Mustafa Al-Chalabi, MDDallas, TX 752301417932948
- Richard Bluestein, D.O.Dallas, TX 752301104802867
- Matthew Bush, M.D.Dallas, TX 752301659356665
- Gerald Delk, M.D.Dallas, TX 752301821073511
- William Frazier, M.D.Dallas, TX 752301164407854
- Daniel Keyes, MDDallas, TX 752301619964863
- James Lilly, MDDallas, TX 752301356327423
- Nikolas Mendrygal, MDDallas, TX 752301063455905
Common questions
What is John B. Marshall, MD's NPI number?
John B. Marshall, MD's National Provider Identifier (NPI) is 1437135563, issued on Dec 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John B. Marshall, MD located?
The NPPES record lists a practice address at 7777 Forest LN, Dallas, TX, 75230. Phone: (972) 758-3598. Providers update this record themselves, so call before visiting.
How can I verify John B. Marshall, MD's license?
NPPES lists Texas license number M0164, 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 John B. Marshall, MD prescribe under Medicare Part D?
In 2024, John B. Marshall, MD had 297 Medicare Part D claims for 184 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is John B. Marshall, MD's MIPS final score?
The 2023 MIPS final score is 81.9 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.