Ellis Ducdat Doan, M.D.
Internal Medicine Physician · Austin, TX
Ellis Ducdat Doan, M.D. is an internal medicine physician with a practice address in Austin, Texas, and NPI 1124280805, issued on Jun 25, 2008. Check the license (Texas N9695, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ellis Ducdat Doan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- N9695 TX
Self-reported in NPPES; status is on the state search - Practice location
- 7000 North Mopac, Austin, TX 78731
- Phone
- (512) 482-0045
- Enumerated
- Jun 25, 2008
- Record last updated
- Feb 14, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (512) 476-9892
- Medicare enrollment
- Enrolled (PECOS I20110907001536); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 7000 North Mopac
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erin Amjadi, MDInternal Medicine Physician1871529115
- Amy Arrant, MDInternal Medicine Physician1750326419
- Farhana Bashar, MDInternal Medicine Physician1326090119
- Matthew Benevich, MDInternal Medicine Physician1710922331
- Lu Ann Bundrant, MDInternal Medicine Physician1700812989
- Melodie Chen, D.O.Internal Medicine Physician1639307689
Verify Ellis Ducdat Doan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N9695Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,950 Medicare Part D claims for 335 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 118 claims were for opioids.
Most prescribed
- Levothyroxine Sodium93 claims
- Mirtazapine65 claims
- Eliquis56 claims
- Tramadol Hcl54 claims
- Clonazepam52 claims
- Lamotrigine52 claims
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.
Bills Medicare through one group practice
- Hospital Internists OF Texas LLCAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellis Ducdat Doan among 9,175 internal medicine physician records in Texas
Ellis Ducdat Doan, 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 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2004 among the 6,088 with a school on file
- Record last updated2014 · 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
- Erin Amjadi, MDAustin, TX 787311871529115
- Amy Arrant, MDAustin, TX 787311750326419
- Farhana Bashar, MDAustin, TX 787311326090119
- Matthew Benevich, MDAustin, TX 787311710922331
- Lu Ann Bundrant, MDAustin, TX 787311700812989
- Mini Gopalan, M.D.Austin, TX 787311720060932
- Grace Grant-Jennings, M.D.Austin, TX 787311003816422
- Ross Hemphill, M.D.Austin, TX 787311568490308
Common questions
What is Ellis Ducdat Doan, M.D.'s NPI number?
Ellis Ducdat Doan, M.D.'s National Provider Identifier (NPI) is 1124280805, issued on Jun 25, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ellis Ducdat Doan, M.D. located?
The NPPES record lists a practice address at 7000 North Mopac, Austin, TX, 78731. Phone: (512) 482-0045. Providers update this record themselves, so call before visiting.
How can I verify Ellis Ducdat Doan, M.D.'s license?
NPPES lists Texas license number N9695, 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 Ellis Ducdat Doan, M.D. prescribe under Medicare Part D?
In 2024, Ellis Ducdat Doan, M.D. had 1,950 Medicare Part D claims for 335 beneficiaries; 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.
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.