DR. ELLIS DUCDAT DOAN M.D.
NPI 1124280805
Internal Medicine in Austin, TX
About Dr. Ellis Ducdat Doan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ELLIS DUCDAT DOAN M.D. (NPI 1124280805) is an individual internal medicine provider in Austin, Texas, licensed in Texas (N9695) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Ascension Seton Medical Center Austin, and is a graduate of University Of Texas Medical Branch At Galveston (2008).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ellis Ducdat Doan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Ellis Doan reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78731
- Reassigned Medicare billing, Texas enrollment
- 50 clinicians in this Medicare group
Austin, TX 78731
- Reassigned Medicare billing, Texas enrollment
- 45 clinicians in this Medicare group
Austin, TX 78752
- Reassigned Medicare billing, Texas enrollment
- 55 clinicians in this Medicare group
Lakeway, TX 78734
- Reassigned Medicare billing, Texas enrollment
- 2 clinicians in this Medicare group
Mansfield, TX 76063
- Reassigned Medicare billing, Texas enrollment
- 994 clinicians in this Medicare group
Fort Worth, TX 76118
- Reassigned Medicare billing, Texas enrollment
- 49 clinicians in this Medicare group
Columbia, MD 21046
- Reassigned Medicare billing, Texas enrollment
- 46 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Seton Medical Center Austin
Acute Care Hospitals · Austin, TXSt David's Medical Center
Acute Care Hospitals · Austin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78731 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ellis Doan's NPI number?
The NPI number for Ellis Doan is 1124280805. It was assigned to this individual provider in the NPPES registry on June 25, 2008.
Where is Ellis Doan located?
Ellis Doan practices at 7000 North Mopac Suite #420, Austin, TX 78731. The listed phone number is (512) 482-0045.
What is Ellis Doan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ellis Doan enrolled in Medicare?
Yes. Ellis Doan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ellis Doan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellis Doan reassigns Medicare benefits to 7 organizations: Hospital Internists Of Texas, LLC (Austin, TX), Hit Population Health Services PLLC (Austin, TX), Careconnectmd Texas PA (Austin, TX), Ziba Rezaee MD PLLC (Lakeway, TX), Lonestar Hospital Medicine Associates, PA (Mansfield, TX) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ellis Doan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ellis Doan accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 6 other insurers list Ellis Doan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ellis Doan affiliated with any hospitals?
According to CMS data, Ellis Doan is affiliated with Ascension Seton Medical Center Austin and St David's Medical Center.
When was this NPI record last updated?
The NPPES record for Ellis Doan was last updated on February 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ellis Ducdat Doan, M.D. · NPI 1124280805
Internal Medicine physician in Austin, Texas. Individual provider, active in the CMS NPPES registry since June 25, 2008.
## Identity
- **NPI:** 1124280805 (Entity type: Individual)
- **Enumerated:** June 25, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** N9695 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 7000 NORTH MOPAC, SUITE #420, Austin, TX 78731
- **Phone:** (512) 482-0045 · **Fax:** (512) 476-9892
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Hospital Internists Of Texas, LLC (NPI 1912430281, Austin, TX); Hit Population Health Services PLLC (NPI 1710563655, Austin, TX); Careconnectmd Texas PA (NPI 1043846132, Austin, TX); Ziba Rezaee MD PLLC (NPI 1205342474, Lakeway, TX); Lonestar Hospital Medicine Associates, PA (NPI 1518237429, Mansfield, TX); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 2008
## Record status
- **NPPES last updated:** February 14, 2014
- **Other identifiers:** Medicare PIN TXB133761 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1124280805) · Data from the CMS NPPES public registry.