Kristen Castro, PA-C
Medical Physician Assistant · San Antonio, TX
Kristen Castro, PA-C is a medical physician assistant with a practice address in San Antonio, Texas, and NPI 1194311852, issued on Dec 16, 2020. Check the license (Texas 18130, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kristen Castro
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License numbers
- 18130 TX
58983 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1418 Walkers Way Ste 101, San Antonio, TX 78216
- Phone
- (210) 245-7933
- Enumerated
- Dec 16, 2020
- Record last updated
- Oct 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20251117002511); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1418 Walkers Way Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sujatha Gerineni, MDInternal Medicine Physician1396973640
- Brenda Santos, PAMedical Physician Assistant1255660916
- Katherine WilksPhysician Assistant1376262659
Verify Kristen Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 18130Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average medical physician assistant in 2024
4,265 Medicare Part D claims for 514 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 23 claims were for opioids.
Most prescribed
- Amlodipine Besylate298 claims
- Atorvastatin Calcium255 claims
- Losartan Potassium209 claims
- Rosuvastatin Calcium165 claims
- Metformin Hcl157 claims
- Fluticasone Propionate114 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: $243.03
12 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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 one group practice
- Advanced Internal Medicine Practice PLLCSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Physician Assistant providers in Texas
There are 2,146 medical physician assistant records in Texas.
Other medical physician assistant records in Texas
- Julia Abell, PANew Braunfels, TX1528647583
- Olabamiji Abimbola, DSC, PA-CDallas, TX1619460938
- Ayat Aborahma, PA-CPlano, TX1235893090
- John Abshier, PAFt Sam Houston, TX1609847557
- Itxia Acevedo-Santiago, PAHouston, TX1639611676
- Jeanette Acker, PA-CLewisville, TX1689335226
- Lee Ackley, PA-C, MPAS, RT(R)Wichita Falls, TX1417933813
- Jose Acosta, PASan Antonio, TX1720085434
- Judy-Ann Acosta, PA-CLufkin, TX1194024703
- Karla AdameWeslaco, TX1548852262
Common questions
What is Kristen Castro, PA-C's NPI number?
Kristen Castro, PA-C's National Provider Identifier (NPI) is 1194311852, issued on Dec 16, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Kristen Castro, PA-C located?
The NPPES record lists a practice address at 1418 Walkers Way Ste 101, San Antonio, TX, 78216. Phone: (210) 245-7933. Providers update this record themselves, so call before visiting.
How can I verify Kristen Castro, PA-C's license?
NPPES lists Texas license number 18130, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Kristen Castro, PA-C prescribe under Medicare Part D?
In 2024, Kristen Castro, PA-C had 4,265 Medicare Part D claims for 514 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.