John Rex Wier, MD
Specialist · Austin, TX
John Rex Wier, MD is a specialist with a practice address in Austin, Texas, and NPI 1194829267, issued on Sep 11, 2006. Check the license with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Rex Wier
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 3724 Jefferson St, Austin, TX 78731
- Phone
- (512) 452-0109
- Enumerated
- Sep 11, 2006
- Record last updated
- Jul 16, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (512) 452-2706
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,716 in Texas → Look up another NPI →
Also registered at 3724 Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Rex Wier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% more Medicare Part D claims than the average specialist in 2024
2,086 Medicare Part D claims for 105 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Alprazolam275 claims
- Clonazepam151 claims
- Duloxetine Hcl107 claims
- Lamotrigine97 claims
- Dextroamphetamine-Amphetamine94 claims
- Quetiapine Fumarate92 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.
John Rex Wier among 1,716 specialist records in Texas
John Rex Wier, MD is one of 1,716 specialist records with a practice address in Texas. 31% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 46% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Texas
There are 1,716 specialist records in Texas.
All 1,716 in Texas → Every provider in Austin → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Jakob Allen, MSAustin, TX 787311679110233
- Mary Crompton, OTRAustin, TX 787311215353156
- Sherry Dickey, PH.D.Austin, TX 787311932374410
- Debra Dobbs, P.T.Austin, TX 787311326084062
- Philip Dyer, M.D.Austin, TX 787311205050267
- Parvin Kavehkar, DPTAustin, TX 787311912107822
- Lynda Kirk, MA, LPCAustin, TX 787311710048186
- John Marietta, MDAustin, TX 787311114033693
Common questions
What is John Rex Wier, MD's NPI number?
John Rex Wier, MD's National Provider Identifier (NPI) is 1194829267, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Rex Wier, MD located?
The NPPES record lists a practice address at 3724 Jefferson St, Austin, TX, 78731. Phone: (512) 452-0109. Providers update this record themselves, so call before visiting.
How can I verify John Rex Wier, MD's license?
Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does John Rex Wier, MD prescribe under Medicare Part D?
In 2024, John Rex Wier, MD had 2,086 Medicare Part D claims for 105 beneficiaries; the average among specialist prescribers was 1,380. 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.