NPPES file of Aug 9, 2026

Linda Lee Isaacs, M.D.

Internal Medicine Physician · Austin, TX

Linda Lee Isaacs, M.D. is an internal medicine physician with a practice address in Austin, Texas, and NPI 1629079439, issued on Aug 2, 2005. Check the license (Texas R0590, 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
1629079439
Name
Linda Lee Isaacs
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
R0590 TX
178484 NY
Self-reported in NPPES; status is on the state search
Practice location
6700 Menchaca Road, Austin, TX 78745
Phone
(737) 208-0831
Enumerated
Aug 2, 2005
Record last updated
Aug 29, 2025
Fax
(737) 242-8223
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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8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →

Verify Linda Lee Isaacs in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license R0590    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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100% fewer Medicare Part D claims than the average internal medicine physician in 2024

11 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Linda Isaacs11
  2. Specialty average3,176

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.

Linda Lee Isaacs among 9,175 internal medicine physician records in Texas

Linda Lee Isaacs, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 91% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2025 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

606 internal medicine physician records list a practice address in Austin

They are 606 of the 26,585 NPPES records with a practice address in Austin, and 9,175 internal medicine physician records in Texas.

All 9,175 in Texas → Every provider in Austin → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. James Boysen, M.D.Austin, TX 787451699779330
  2. Isaac Chitrit, MDSunset Valley, TX 787451144200403
  3. Steven Dobberfuhl, MDAustin, TX 787451932105400
  4. Alejandra Garza, M.D.Sunset Valley, TX 787451538503172
  5. Diana Horton, MDAustin, TX 787451467432880
  6. Shahab Hyder, MDSunset Valley, TX 787451033355987
  7. Allen Sonstein, MDAustin, TX 787451831194489
  8. Robert Stroud, MDAustin, TX 787451851407043

Common questions

What is Linda Lee Isaacs, M.D.'s NPI number?

Linda Lee Isaacs, M.D.'s National Provider Identifier (NPI) is 1629079439, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Linda Lee Isaacs, M.D. located?

The NPPES record lists a practice address at 6700 Menchaca Road, Austin, TX, 78745. Phone: (737) 208-0831. Providers update this record themselves, so call before visiting.

How can I verify Linda Lee Isaacs, M.D.'s license?

NPPES lists Texas license number R0590, 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 Linda Lee Isaacs, M.D. prescribe under Medicare Part D?

In 2024, Linda Lee Isaacs, M.D. had 11 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.

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.