NPPES file of Aug 9, 2026

William R. Wallace, MD

Emergency Medicine Physician · Tyler, TX

William R. Wallace, MD is an emergency medicine physician with a practice address in Tyler, Texas, and NPI 1962445825, issued on Jun 14, 2006. Check the license (Texas H9585, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1962445825
Name
William R. Wallace
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
H9585 TX
Self-reported in NPPES; status is on the state search
Practice location
1809 Capital Dr, Tyler, TX 75701
Phone
(903) 509-4499
Enumerated
Jun 14, 2006
Record last updated
Apr 2, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(903) 509-4490
Medicaid ID
139484314 TX
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1809 Capital Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Stacy Gregory, ACNPAcute Care Nurse Practitioner1528483591
  2. Bradley Robertson, MDEmergency Medicine Physician1760425326

Verify William R. Wallace in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license H9585
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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75% fewer Medicare Part D claims than the average emergency medicine physician in 2024

57 Medicare Part D claims for 44 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. William Wallace57
  2. Specialty average226

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.

William R. Wallace among 4,885 emergency medicine physician records in Texas

William R. Wallace, 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 updated2010 · 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).

86 emergency medicine physician records list a practice address in Tyler

They are 86 of the 5,531 NPPES records with a practice address in Tyler, and 4,885 emergency medicine physician records in Texas.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Mark Anderson, MDTyler, TX 757011346289055
  2. Daniel Baber, MDTyler, TX 757011538112024
  3. Martin Baum, MDTyler, TX 757011508805755
  4. Robert CreathTyler, TX 757011972542587
  5. Christopher Diaz, M.D.Tyler, TX 757011376530188
  6. Luis Haro, MDTyler, TX 757011093794109
  7. Bradley King, MDTyler, TX 757011639118367
  8. Colin Marino, MDTyler, TX 757011578519849

Common questions

What is William R. Wallace, MD's NPI number?

William R. Wallace, MD's National Provider Identifier (NPI) is 1962445825, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William R. Wallace, MD located?

The NPPES record lists a practice address at 1809 Capital Dr, Tyler, TX, 75701. Phone: (903) 509-4499. Providers update this record themselves, so call before visiting.

How can I verify William R. Wallace, MD's license?

NPPES lists Texas license number H9585, 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 William R. Wallace, MD prescribe under Medicare Part D?

In 2024, William R. Wallace, MD had 57 Medicare Part D claims for 44 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.