NPPES file of Aug 9, 2026

Oanh Ngoc Bui, D.O.

Obstetrics & Gynecology Physician · Houston, TX

Oanh Ngoc Bui, D.O. is an obstetrics & gynecology physician with a practice address in Houston, Texas, and NPI 1780790204, issued on Aug 21, 2006. Check the license (Texas M1545, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1780790204
Name
Oanh Ngoc Bui
Credential
D.O.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
M1545 TX
Self-reported in NPPES; status is on the state search
Practice location
10680 Jones RD Ste 600, Houston, TX 77065
Phone
(281) 477-0417
Enumerated
Aug 21, 2006
Record last updated
Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(281) 477-0166
Medicaid ID
178170001 TX
Medicare enrollment
Enrolled (PECOS I20050812000737); accepts Medicare assignment
Medical or professional school
University Of North Texas Hsc, College Of Osteopathic Med, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10680 Jones RD Ste 600

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joseph Castillo, MDObstetrics & Gynecology Physician1659348969

Verify Oanh Ngoc Bui in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license M1545
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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56% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

258 Medicare Part D claims for 93 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.

  1. Oanh Bui258
  2. Specialty average165

Most prescribed

  1. Estradiol40 claims
  2. Myrbetriq29 claims
  3. Fluconazole19 claims
  4. Progesterone15 claims
  5. Metronidazole14 claims
  6. Alendronate Sodium13 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.

Industry payments in 2024: $753.21

39 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Oanh Bui$753.21
  2. Specialty average$1,030.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Fairfield OB-Gyn PLLCCypress, TX
  2. Oanh Ngoc Bui DO PAHouston, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Oanh Ngoc Bui among 3,524 obstetrics & gynecology physician records in Texas

Oanh Ngoc Bui, D.O. is one of 3,524 obstetrics & gynecology physician records with a practice address in Texas. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.

  • NPI issued2006 · 15% of these records are older, 53% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2010 · median 2005 among the 2,093 with a school on file
  • Record last updated2018 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Texas

There are 3,524 obstetrics & gynecology physician records in Texas.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Joseph Castillo, MDHouston, TX 770651659348969
  2. Samuel Itam, MDHouston, TX 770651326288184
  3. James Kern, MDJersey Village, TX 770651447289319
  4. June Marshall, M.D.Houston, TX 770651629176128
  5. Daniela McConnell, M.D.Houston, TX 770651356735997
  6. Chandler McGee, MDHouston, TX 770651942888045
  7. Cimberly Penick, DO, MBAHouston, TX 770651881987162
  8. Alexandra Simotas, M.D.Houston, TX 770651528035656

Common questions

What is Oanh Ngoc Bui, D.O.'s NPI number?

Oanh Ngoc Bui, D.O.'s National Provider Identifier (NPI) is 1780790204, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Oanh Ngoc Bui, D.O. located?

The NPPES record lists a practice address at 10680 Jones RD Ste 600, Houston, TX, 77065. Phone: (281) 477-0417. Providers update this record themselves, so call before visiting.

How can I verify Oanh Ngoc Bui, D.O.'s license?

NPPES lists Texas license number M1545, 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 Oanh Ngoc Bui, D.O. prescribe under Medicare Part D?

In 2024, Oanh Ngoc Bui, D.O. had 258 Medicare Part D claims for 93 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.