Marian Yvette Williams-Brown, MD
Gynecologic Oncology Physician · Austin, TX
Marian Yvette Williams-Brown, MD is a gynecologic oncology physician with a practice address in Austin, Texas, and NPI 1861696460, issued on Jun 14, 2007. Check the license (Texas N0554, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marian Yvette Williams-Brown
- Credential
- MD
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License number
- N0554 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Trinity St Stop 804, Austin, TX 78712
- Phone
- (512) 324-7865
- Enumerated
- Jun 14, 2007
- Record last updated
- Jan 15, 2025
- Medicare enrollment
- Enrolled (PECOS I20090806000127); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gynecologic oncology physician records → All 149 in Texas → Look up another NPI →
Also registered at 1601 Trinity St Stop 804
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yuko Hamajima, NPNurse Practitioner1851843288
- Ala'a Eddin Tayyem, M.D.Medical Oncology Physician1437400702
- Madeline Walker, RNOncology Registered Nurse1174486716
Verify Marian Yvette Williams-Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N0554Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024
115 Medicare Part D claims for 47 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims. 22 claims were for opioids.
Most prescribed
- Zejula19 claims
- Oxycodone Hcl15 claims
- Lorazepam11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 71.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $562.71
11 payments; by number, the most common kind was food and beverage; the largest payer was Biotissue Holdings Inc. The 1,199 providers of this specialty with any payment received $6,387.20 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Seton Family OF DoctorsAustin, TX
- The University OF Texas AT AustinAustin, TX
- University OF Texas AT Austin Dell Medical SchoolAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marian Yvette Williams-Brown among 149 gynecologic oncology physician records in Texas
Marian Yvette Williams-Brown, MD is one of 149 gynecologic oncology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 42% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2004 · median 2006 among the 119 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0201X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecologic Oncology Physician providers in Texas
There are 149 gynecologic oncology physician records in Texas.
All 149 in Texas → Every provider in Austin → Gynecologic Oncology Physician nationwide →
The 8 gynecologic oncology physician records with the nearest ZIP codes
- Nerlyne Desravines, MDAustin, TX 787121174917272
- John Dalrymple, M.D.Austin, TX 787051447232467
- Paul Loar, M.D.Austin, TX 787051063488617
- Ellen Smith, M.D.Austin, TX 787051558305490
- Mark Crozier, M.D.Austin, TX 787011376586271
- Priyanka Kamath, M.D.Austin, TX 787311568722312
- Lynne Knowles, MDAustin, TX 787311568561397
- Michael Teneriello, MDAustin, TX 787311801834809
Common questions
What is Marian Yvette Williams-Brown, MD's NPI number?
Marian Yvette Williams-Brown, MD's National Provider Identifier (NPI) is 1861696460, issued on Jun 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marian Yvette Williams-Brown, MD located?
The NPPES record lists a practice address at 1601 Trinity St Stop 804, Austin, TX, 78712. Phone: (512) 324-7865. Providers update this record themselves, so call before visiting.
How can I verify Marian Yvette Williams-Brown, MD's license?
NPPES lists Texas license number N0554, 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 Marian Yvette Williams-Brown, MD prescribe under Medicare Part D?
In 2024, Marian Yvette Williams-Brown, MD had 115 Medicare Part D claims for 47 beneficiaries; the average among gynecologic oncology physician prescribers was 195. Part D covers Medicare prescriptions only.
What is Marian Yvette Williams-Brown, MD's MIPS final score?
The 2023 MIPS final score is 71.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.