Steven A. Masson, MD
Emergency Medicine Physician · Dallas, TX
Steven A. Masson, MD is an emergency medicine physician with a practice address in Dallas, Texas, and NPI 1871723932, issued on Jul 22, 2009. Check the license (Texas P3770, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Steven A. Masson
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- P3770 TX
4301094555 MI
Self-reported in NPPES; status is on the state search - Practice location
- 12221 Merit Dr, Dallas, TX 75251
- Phone
- (214) 217-1911
- Enumerated
- Jul 22, 2009
- Record last updated
- Mar 7, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (214) 217-1912
- Medicaid IDs
- 305981801 TX
305981802 TX - Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 12221 Merit Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marisol Anderson, PA-CPhysician Assistant1326200148
- Anton Appelqvist, PA-CPhysician Assistant1205094430
- Asma Ashraf, M.D.Internal Medicine Physician1063439529
- Derek Bennetsen, DOEmergency Medicine Physician1720011232
- Pradeep Bodige, D.O.Emergency Medicine Physician1235367368
- David Brunett, MDEmergency Medicine Physician1255658027
Verify Steven A. Masson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P3770Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average emergency medicine physician in 2024
169 Medicare Part D claims for 110 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefuroxime20 claims
- Prednisone20 claims
- Albuterol Sulfate Hfa13 claims
- Naproxen13 claims
- Cyclobenzaprine Hcl12 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.
Steven A. Masson among 4,885 emergency medicine physician records in Texas
Steven A. Masson, 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 2009, is newer than 45% of them.
- NPI issued2009 · 45% of these records are older, 52% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2013 · 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
- Benjamin Adams, D.O.Dallas, TX 752511760648646
- Derek Bennetsen, DODallas, TX 752511720011232
- Pradeep Bodige, D.O.Dallas, TX 752511235367368
- Mini Delashaw, MDDallas, TX 752511952344202
- Zachary Goldman, MDDallas, TX 752511891845681
- Peter Hesson, MDDallas, TX 752511740507649
- Jong Kim, MDDallas, TX 752511508070145
- Jedidiah Leaf, MDDallas, TX 752511235399627
Common questions
What is Steven A. Masson, MD's NPI number?
Steven A. Masson, MD's National Provider Identifier (NPI) is 1871723932, issued on Jul 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Steven A. Masson, MD located?
The NPPES record lists a practice address at 12221 Merit Dr, Dallas, TX, 75251. Phone: (214) 217-1911. Providers update this record themselves, so call before visiting.
How can I verify Steven A. Masson, MD's license?
NPPES lists Texas license number P3770, 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 Steven A. Masson, MD prescribe under Medicare Part D?
In 2024, Steven A. Masson, MD had 169 Medicare Part D claims for 110 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.