Martha Armstrong, M.D.
Family Medicine Physician · Houston, TX
Martha Armstrong, M.D. is a family medicine physician with a practice address in Houston, Texas, and NPI 1467577346, issued on Mar 20, 2007. Check the license (Texas L4226, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Martha Armstrong
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- L4226 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3701 Kirby Dr Ste 600, Houston, TX 77098
- Phone
- (713) 798-4491
- Enumerated
- Mar 20, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20241226002574); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 1999
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 3701 Kirby Dr Ste 600
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Saira Khan, M. D.Pediatrics Physician1750385290
Verify Martha Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L4226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Armstrong Medical Group PLLCLeague City, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Martha Armstrong among 11,119 family medicine physician records in Texas
Martha Armstrong, M.D. is one of 11,119 family 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1999 · median 2004 among the 7,095 with a school on file
- Record last updated2007 · 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 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,123 family medicine physician records list a practice address in Houston
They are 1,123 of the 61,221 NPPES records with a practice address in Houston, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Houston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Shawn Burton, M.D.Houston, TX 770981720023096
- Sarah Edmonson, M.D.Houston, TX 770981568531812
- William Huang, MDHouston, TX 770981831288208
- Alicia Kowalchuk, D.O.Houston, TX 770981619046935
- Tomas Lumicao, MDHouston, TX 770981730269135
- John Ma, M.D.Houston, TX 770981912901737
- Nicole McGinty, M.D.Houston, TX 770981225057854
- Sherri Onyiego, M.D.Houston, TX 770981750411732
Common questions
What is Martha Armstrong, M.D.'s NPI number?
Martha Armstrong, M.D.'s National Provider Identifier (NPI) is 1467577346, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Martha Armstrong, M.D. located?
The NPPES record lists a practice address at 3701 Kirby Dr Ste 600, Houston, TX, 77098. Phone: (713) 798-4491. Providers update this record themselves, so call before visiting.
How can I verify Martha Armstrong, M.D.'s license?
NPPES lists Texas license number L4226, 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.
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.