Gregory Matthew Hadden, MD
Emergency Medicine Physician · Austin, TX
Gregory Matthew Hadden, MD is an emergency medicine physician with a practice address in Austin, Texas, and NPI 1699733204, issued on May 3, 2006. Check the license (Texas M1124, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Matthew Hadden
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- M1124 TX
Self-reported in NPPES; status is on the state search - Practice location
- 720 W 34TH St, Austin, TX 78705
- Phone
- (512) 452-8533
- Enumerated
- May 3, 2006
- Record last updated
- Apr 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid IDs
- 174411205 TX
174411201 TX
174411202 TX - Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 720 W 34TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Booton, M.D.Internal Medicine Physician1093740987
- Kenton Brown, MDPsychiatry Physician1568542777
- Kirk Brown, M.DEmergency Medicine Physician1447440276
- Alan Colby, D.O.Psychiatry Physician1326162389
- Matthew Conner, DOFamily Medicine Physician1225284037
- Shirien Coover, P.A.-C.Medical Physician Assistant1730349358
Verify Gregory Matthew Hadden in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M1124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average emergency medicine physician in 2024
189 Medicare Part D claims for 96 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Ipratropium Bromide53 claims
- Levocetirizine Dihydrochloride37 claims
- Albuterol Sulfate Hfa16 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.
Gregory Matthew Hadden among 4,885 emergency medicine physician records in Texas
Gregory Matthew Hadden, 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 67% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2008 · 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).
Emergency Medicine Physician providers in Texas
There are 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Austin → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- John Bedolla, M.D.Austin, TX 787051750345351
- Kenneth Domuczicz, MDAustin, TX 787051043275258
- Sanjeev Dubey, M.D.Austin, TX 787051487619755
- Alois Duska, MDAustin, TX 787051861459307
- Christopher Ewing, MDAustin, TX 787051316904840
- Richard Gmitter, MDAustin, TX 787051831148170
- Francois Gordon, MDAustin, TX 787051962460808
- Chip Harrington, MDAustin, TX 787051578511143
Common questions
What is Gregory Matthew Hadden, MD's NPI number?
Gregory Matthew Hadden, MD's National Provider Identifier (NPI) is 1699733204, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Matthew Hadden, MD located?
The NPPES record lists a practice address at 720 W 34TH St, Austin, TX, 78705. Phone: (512) 452-8533. Providers update this record themselves, so call before visiting.
How can I verify Gregory Matthew Hadden, MD's license?
NPPES lists Texas license number M1124, 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 Gregory Matthew Hadden, MD prescribe under Medicare Part D?
In 2024, Gregory Matthew Hadden, MD had 189 Medicare Part D claims for 96 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.