Kathryn S. Williamson, D.O.
Family Medicine Physician · Nederland, TX
Kathryn S. Williamson, D.O. is a family medicine physician with a practice address in Nederland, Texas, and NPI 1174522031, issued on Jul 21, 2005. Check the license (Texas K9703, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kathryn S. Williamson
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- K9703 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2400 Highway 365, Nederland, TX 77627
- Phone
- (409) 721-9090
- Enumerated
- Jul 21, 2005
- Record last updated
- Jun 30, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (409) 721-6078
- Medicaid ID
- 047672304 TX
- Entity
- Type 1 · individual
Also registered at 2400 Highway 365
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Badlissi, MDInternal Medicine Physician1578753265
- Mary Castro, MDFamily Medicine Physician1942301130
- William George, M.D.Internal Medicine Physician1144229659
- Eduardo Jaramillo, MDObstetrics & Gynecology Physician1477581205
- Michael Thomas, MDInternal Medicine Physician1801955349
Verify Kathryn S. Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K9703Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
416 Medicare Part D claims for 53 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium22 claims
- Rosuvastatin Calcium20 claims
- Amlodipine Besylate18 claims
- Albuterol Sulfate Hfa15 claims
- Losartan-Hydrochlorothiazide14 claims
- Atorvastatin Calcium13 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.
13 family medicine physician records list a practice address in Nederland
They are 13 of the 178 NPPES records with a practice address in Nederland, and 11,119 family medicine physician records in Texas.
All 13 in Nederland → All 11,119 in Texas → Every provider in Nederland →
Other family medicine physician records in Texas
- Srinivasa Aaluri, MDEl Paso, TX1265566509
- Maira Aamir, MDShenandoah, TX1932660859
- Fakhrudin Aaseemah Mohamed, M.DAllen, TX1952782518
- So Abad, MDWichita Falls, TX1184624694
- Yoseph AbadiRichardson, TX1700742640
- Marcus Abadie, M.D.Athens, TX1104821107
- Montserrat Abadie Sole, M.D.Fort Worth, TX1245437078
- Sarah Abang-Hayes, M.D.San Antonio, TX1326244724
- Ahmad Abazid, M.DRichardson, TX1013238401
- Syed Abbas, M.D.Houston, TX1821267477
Common questions
What is Kathryn S. Williamson, D.O.'s NPI number?
Kathryn S. Williamson, D.O.'s National Provider Identifier (NPI) is 1174522031, issued on Jul 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn S. Williamson, D.O. located?
The NPPES record lists a practice address at 2400 Highway 365, Nederland, TX, 77627. Phone: (409) 721-9090. Providers update this record themselves, so call before visiting.
How can I verify Kathryn S. Williamson, D.O.'s license?
NPPES lists Texas license number K9703, 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 Kathryn S. Williamson, D.O. prescribe under Medicare Part D?
In 2024, Kathryn S. Williamson, D.O. had 416 Medicare Part D claims for 53 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.