NPPES file of Aug 9, 2026

Dennis A. Tweedy, M.D.

Hematology & Oncology Physician · Austin, TX

Dennis A. Tweedy, M.D. is a hematology & oncology physician with a practice address in Austin, Texas, and NPI 1205874948, issued on Jun 3, 2006. Check the license (Texas H7840, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1205874948
Name
Dennis A. Tweedy
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
H7840 TX
Self-reported in NPPES; status is on the state search
Practice location
4101 James Casey St, Austin, TX 78745
Phone
(512) 419-9733
Enumerated
Jun 3, 2006
Record last updated
May 10, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(512) 440-1747
Medicaid IDs
132779309 TX
132779302 TX
132779310 TX
0811853-01 TX
Medicare enrollment
Enrolled (PECOS I20040422000888); accepts Medicare assignment
Medical or professional school
University Of Virginia School Of Medicine, 1979
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →

Also registered at 4101 James Casey St

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

  1. Saul Benitez, ACNSAdult Health Clinical Nurse Specialist1386971794
  2. Anthony Bittar, M.D.Otolaryngology Physician1760411292
  3. Sarah Cain, APRN-CNPFamily Nurse Practitioner1952168098
  4. Punit Chadha, MDMedical Oncology Physician1497778229
  5. Pamela Garza, FNPFamily Nurse Practitioner1841232758
  6. Katie Good, PA-CPhysician Assistant1093966178

Verify Dennis A. Tweedy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license H7840    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

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Bills Medicare through one group practice

  1. Texas Oncology PAAustin, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Dennis A. Tweedy among 922 hematology & oncology physician records in Texas

Dennis A. Tweedy, M.D. is one of 922 hematology & oncology physician records with a practice address in Texas. 87% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 57% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1979 · median 2004 among the 691 with a school on file
  • Record last updated2018 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Texas

There are 922 hematology & oncology physician records in Texas.

All 922 in Texas → Every provider in Austin → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Carsten Kampe, PHD,MD,FACPAustin, TX 787451912944521
  2. Joseph Myers, MDAustin, TX 787451992748818
  3. Diaa Osman, DOAustin, TX 787451689894495
  4. Jennifer Wright, MDAustin, TX 787451568624831
  5. Vinod KondraguntaAustin, TX 787531588906168
  6. Yuhang Zhou, MD, PHDAustin, TX 787351508429739
  7. Allison Gorrebeeck, MDAustin, TX 787581467548628
  8. Mamta Kalidas, MDAustin, TX 787581164502423

Common questions

What is Dennis A. Tweedy, M.D.'s NPI number?

Dennis A. Tweedy, M.D.'s National Provider Identifier (NPI) is 1205874948, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Dennis A. Tweedy, M.D. located?

The NPPES record lists a practice address at 4101 James Casey St, Austin, TX, 78745. Phone: (512) 419-9733. Providers update this record themselves, so call before visiting.

How can I verify Dennis A. Tweedy, M.D.'s license?

NPPES lists Texas license number H7840, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.