Quick answers
- Does Oanh N. Bui accept Medicare assignment?
- Yes. Medicare's clinician data says Oanh N. Bui accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Oanh N. Bui see?
- In 2024, CMS data shows 64 Original Medicare patients and 199 services for Oanh N. Bui. This counts Original Medicare only and measures volume, not quality.
- What is Oanh N. Bui's NPI number?
- 1780790204. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Oanh N. Bui, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 64 |
|---|---|
| Services billed to Medicare | 199 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)42 services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)33 services
- Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)33 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)22 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol72%
- High blood pressure58%
- Arthritis41%
- Diabetes23%
- Anxiety23%
- Osteoporosis20%
Hospitals where Oanh N. Bui works
Medicare's Facility Affiliation Data lists Oanh N. Bui at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450068
Practice locations
Addresses where Oanh N. Bui is enrolled with Medicare (CMS data updated October 2, 2026).
- 10680 Jones Rd, Suite 600Houston, TX 77065 (281) 477‑0417
- 27150 Hwy 290, Suite 500Cypress, TX 77433 (832) 237‑4200
Group practices
Medicare enrollment lists Oanh N. Bui as a member of these groups (CMS data updated October 2, 2026).
- Fairfield Ob-Gyn PLLC5 clinicians in the group
- Oanh Ngoc Bui DO PA5 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Fairfield Ob-Gyn PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780790204 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians