Marsha Onan, M.D.
Ophthalmology Physician · Austin, TX
Marsha Onan, M.D. is an ophthalmology physician with a practice address in Austin, Texas, and NPI 1376545186, issued on Aug 11, 2005. Check the license (Texas K3623, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marsha Onan
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- K3623 TX
Self-reported in NPPES; status is on the state search - Practice location
- 11111 Research Blvd, Austin, TX 78759
- Phone
- (512) 324-6755
- Enumerated
- Aug 11, 2005
- Entity
- Type 1 · individual
Also registered at 11111 Research Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marsha Onan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K3623Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Ophthalmology Physician providers in Texas
There are 1,439 ophthalmology physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other ophthalmology physician records in Texas
- Justin Aaker, MDGeorgetown, TX1144422908
- Asad Abbas, M.D.Baytown, TX1457354813
- Ashkan Abbey, M.D.Dallas, TX1548402886
- Meredith Abbott, MDDallas, TX1659570943
- Musa Abdelaziz, MDSouthlake, TX1588906465
- Wael Abdelghani, M.D.The Woodlands, TX1508837915
- Aziz Abdul-Rahim, M.D.Fort Worth, TX1881690279
- Saeid Abedin, M.D.,Houston, TX1265470819
- Joan Abernethy, MDFort Worth, TX1871590471
- Mohamad Bachir AbiadDallas, TX1831542828
Common questions
What is Marsha Onan, M.D.'s NPI number?
Marsha Onan, M.D.'s National Provider Identifier (NPI) is 1376545186, issued on Aug 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marsha Onan, M.D. located?
The NPPES record lists a practice address at 11111 Research Blvd, Austin, TX, 78759. Phone: (512) 324-6755. Providers update this record themselves, so call before visiting.
How can I verify Marsha Onan, M.D.'s license?
NPPES lists Texas license number K3623, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.