--- title: "Caitlin De Castro, P.A. | Internal Medicine in San Mateo, CA | Sutter Health" description: "Caitlin De Castro, P.A. practices Internal Medicine in San Mateo, CA. Accepting new patients." url: "https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744" --- 1. [Home](https://www.sutterhealth.org/) / 2. [Find a provider](https://www.sutterhealth.org/find-provider) / 3. Caitlin De Castro, P.A. ![Caitlin De Castro, P.A.](https://dyn.mktgcdn.com/p/64kJf34REdR710Jt4LtuKoZcn0b0KwUDBXiu8gHHf7Y/fit=crop,gravity=auto,dpr=2,width=230,height=230) # Caitlin De Castro, P.A. ## Internal Medicine - Accepting new patients [50 South San Mateo DriveFoor 4San Mateo, CA 94401](https://www.google.com/maps/dir/?api=1&destination=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US) Jump to: - [About](https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744#provider-about) - [Locations](https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744#provider-locations) - [Services](https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744#provider-services) ## About Caitlin De Castro, P.A. Languages English Gender Female Uses [My Health Online](https://www.sutterhealth.org/patient-resources/my-health-online) for scheduling and messaging Offers [video visits](https://www.sutterhealth.org/find-care/video-visits) for existing patients ## Education and training **Licensure and certification:** NCCPA Certified Physician Assistant, Basic Life Support **Education:** Red Rocks Community College ## Affiliations ### Medical groups - Palo Alto Foundation Medical Group ### Other - Mills-Peninsula Division ## Care locations [San Mateo Care Center](https://www.sutterhealth.org/find-location/facility/san-mateo-care-center-1043247262) 50 South San Mateo Drive Foor 4 San Mateo, CA 94401 [Get directions](https://www.google.com/maps/dir/?api=1&destination=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US) [650-652-8500](tel:+16506528500) 650-652-8501 Sunday Closed Monday 8:00 am - 5:00 pm Tuesday 8:00 am - 5:00 pm Wednesday 8:00 am - 5:00 pm Thursday 8:00 am - 5:00 pm Friday 8:00 am - 5:00 pm Saturday Closed **View additional hours** Sunday Closed Monday 8:00 am - 5:00 pm Tuesday 8:00 am - 5:00 pm Wednesday 8:00 am - 5:00 pm Thursday 8:00 am - 5:00 pm Friday 8:00 am - 5:00 pm Saturday Closed ## Areas of expertise Explore the services and treatments this provider may offer. **Clinical expertise** ### Procedures - Annual physical exam ### Reasons for visit - Annual checkup ## Related services offered by Sutter - [Internal medicine](https://www.sutterhealth.org/services/internal-medicine) ## Similar providers nearby [View all](https://www.sutterhealth.org/find-provider-results?facets=%5B%7B%22i%22%3A%22c_providerSpecialties.specialty.name%22%2C%22v%22%3A%5B%22Internal+Medicine%22%5D%7D%5D&limit=10&staticFilters=%5B%7B%22displayName%22%3A%22Sutter+Health+provider%22%2C%22selected%22%3Atrue%2C%22filter%22%3A%7B%22kind%22%3A%22fieldValue%22%2C%22fieldId%22%3A%22c_providerIsSutterHealth%22%2C%22matcher%22%3A%22%24eq%22%2C%22value%22%3Atrue%7D%7D%2C%7B%22displayName%22%3A%22Near%3A+San+Mateo+Care+Center%22%2C%22selected%22%3Atrue%2C%22filter%22%3A%7B%22kind%22%3A%22fieldValue%22%2C%22fieldId%22%3A%22c_offices.officeOrFacility.builtin.location%22%2C%22matcher%22%3A%22%24near%22%2C%22value%22%3A%7B%22lat%22%3A37.566113299020486%2C%22lng%22%3A-122.32644657285475%2C%22radius%22%3A16093%7D%7D%7D%5D&verticalKey=healthcare_professionals) - ![Amy Bennett](https://dyn.mktgcdn.com/p/TMDfkGvi2nmM4QvPOchNHctYHZJcNNax_wjHL8EJdzU/fit=crop,gravity=auto,dpr=2,width=230,height=230) ### [Amy Bennett, N.P., FNP-BC](https://www.sutterhealth.org/find-provider/amy-bennett-1046244873) 50 South San Mateo Drive Floor 3 San Mateo, CA 94401 [Get directions](https://www.google.com/maps/dir/?api=1&destination=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US) \+ 2 locations [650-652-8500](tel:+16506528500) #### Internal Medicine - New patients, please call for availability - ![Carolyn L. Siu](https://dyn.mktgcdn.com/p/1cjgj4ldVJhBnzMyiTG-oC0PFSziA0UG5raMysRKybY/fit=crop,gravity=auto,dpr=2,width=230,height=230) ### [Carolyn L. Siu, P.A., MPA](https://www.sutterhealth.org/find-provider/carolyn-l-siu-2009452186) 50 South San Mateo Drive Floor 4 San Mateo, CA 94401 [Get directions](https://www.google.com/maps/dir/?api=1&destination=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US) [650-652-8500](tel:+16506528500) #### Internal Medicine - New patients, please call for availability - ![Diana Teng](https://dyn.mktgcdn.com/p/pgAaV1REmZwf52D_Gvh7Y6o6CzxiFvP1dZIroYxtwgQ/fit=crop,gravity=auto,dpr=2,width=230,height=230) ### [Diana Teng, N.P.](https://www.sutterhealth.org/find-provider/diana-teng-1046248836) 50 South San Mateo Drive Floor 4 San Mateo, CA 94401 [Get directions](https://www.google.com/maps/dir/?api=1&destination=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US) [650-652-8500](tel:+16506528500) #### Internal Medicine - New patients, please call for availability - ![Heidi M. Stroessner-Johnson](https://dyn.mktgcdn.com/p/9Pfh8uKYl3Q0uzoiW8dW4oArKoitEjjDuUc3g73g2sQ/fit=crop,gravity=auto,dpr=2,width=230,height=230) ### [Heidi M. Stroessner-Johnson, M.D.](https://www.sutterhealth.org/find-provider/dr-heidi-m-stroessner-johnson-1046235707) (413) 50 South San Mateo Drive Floor 4 San Mateo, CA 94401 [Get directions](https://www.google.com/maps/dir/?api=1&destination=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US) [650-652-8500](tel:+16506528500) #### Internal Medicine - New patients, please call for availability - [![Provider placeholder image](https://www.sutterhealth.org/static/images/fallback-provider.png) View all](https://www.sutterhealth.org/find-provider-results?facets=%5B%7B%22i%22%3A%22c_providerSpecialties.specialty.name%22%2C%22v%22%3A%5B%22Internal+Medicine%22%5D%7D%5D&limit=10&staticFilters=%5B%7B%22displayName%22%3A%22Sutter+Health+provider%22%2C%22selected%22%3Atrue%2C%22filter%22%3A%7B%22kind%22%3A%22fieldValue%22%2C%22fieldId%22%3A%22c_providerIsSutterHealth%22%2C%22matcher%22%3A%22%24eq%22%2C%22value%22%3Atrue%7D%7D%2C%7B%22displayName%22%3A%22Near%3A+San+Mateo+Care+Center%22%2C%22selected%22%3Atrue%2C%22filter%22%3A%7B%22kind%22%3A%22fieldValue%22%2C%22fieldId%22%3A%22c_offices.officeOrFacility.builtin.location%22%2C%22matcher%22%3A%22%24near%22%2C%22value%22%3A%7B%22lat%22%3A37.566113299020486%2C%22lng%22%3A-122.32644657285475%2C%22radius%22%3A16093%7D%7D%7D%5D&verticalKey=healthcare_professionals) [View all](https://www.sutterhealth.org/find-provider-results?facets=%5B%7B%22i%22%3A%22c_providerSpecialties.specialty.name%22%2C%22v%22%3A%5B%22Internal+Medicine%22%5D%7D%5D&limit=10&staticFilters=%5B%7B%22displayName%22%3A%22Sutter+Health+provider%22%2C%22selected%22%3Atrue%2C%22filter%22%3A%7B%22kind%22%3A%22fieldValue%22%2C%22fieldId%22%3A%22c_providerIsSutterHealth%22%2C%22matcher%22%3A%22%24eq%22%2C%22value%22%3Atrue%7D%7D%2C%7B%22displayName%22%3A%22Near%3A+San+Mateo+Care+Center%22%2C%22selected%22%3Atrue%2C%22filter%22%3A%7B%22kind%22%3A%22fieldValue%22%2C%22fieldId%22%3A%22c_offices.officeOrFacility.builtin.location%22%2C%22matcher%22%3A%22%24near%22%2C%22value%22%3A%7B%22lat%22%3A37.566113299020486%2C%22lng%22%3A-122.32644657285475%2C%22radius%22%3A16093%7D%7D%7D%5D&verticalKey=healthcare_professionals) ### Disclaimer _This provider directory is provided as a convenience to you. It is not intended as a recommendation, referral or endorsement of any particular provider. Physicians are not employees or agents of Sutter Health or its subsidiaries. The information is submitted by each doctor and we make no guarantee or warranty as to the accuracy of the information. You should verify the accuracy of the information directly with the provider's office._ _All doctors on this site are in the Sutter system. Doctors meeting your search criteria are presented in order of relevance based on search criteria, based on those providers with appointment availability._ [_Find out more about star ratings_](https://www.sutterhealth.org/star-ratings)_._ ```json {"@context":"https://schema.org","@type":"MedicalOrganization","name":"Sutter Health","@id":"https://www.sutterhealth.org/#medicalorganization","url":"https://www.sutterhealth.org","logo":"https://www.sutterhealth.org/static/images/sutter-health-logo.svg","address":{"@type":"PostalAddress","streetAddress":"2200 River Plaza Drive","addressLocality":"Sacramento","addressRegion":"CA","postalCode":"95833","addressCountry":"US"},"areaServed":{"@type":"AdministrativeArea","name":"California"},"sameAs":["https://www.facebook.com/SutterHealth","https://www.instagram.com/sutterhealth/","https://x.com/SutterHealth","https://www.youtube.com/sutterhealth","https://www.linkedin.com/company/sutter-health","https://en.wikipedia.org/wiki/Sutter_Health"]} ``` ```json {"@context":"https://schema.org","@type":"BreadcrumbList","@id":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744#breadcrumblist","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.sutterhealth.org/"},{"@type":"ListItem","position":2,"name":"Find a provider","item":"https://www.sutterhealth.org/find-provider"},{"@type":"ListItem","position":3,"name":"Caitlin De Castro, P.A."}]} ``` ```json {"@context":"https://schema.org","@type":"IndividualPhysician","@id":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744","areaServed":[{"@type":"GeoCircle","geoMidpoint":{"@type":"GeoCoordinates","latitude":37.566113299020486,"longitude":-122.32644657285475},"geoRadius":"80467"}],"availableService":[{"@type":"MedicalProcedure","name":"Annual physical exam"}],"description":"Caitlin De Castro, P.A. practices Internal Medicine in San Mateo, CA. Accepting new patients.","faxNumber":"(650) 652-8501","hasCredential":[{"@type":"EducationalOccupationalCredential","credentialCategory":"Licensure and certification","name":"NCCPA Certified Physician Assistant, Basic Life Support"},{"@type":"EducationalOccupationalCredential","credentialCategory":"Education","name":"Red Rocks Community College"}],"identifier":{"@type":"PropertyValue","propertyID":"US NPI","value":"1265219075"},"image":{"@type":"ImageObject","representativeOfPage":true,"description":"Caitlin De Castro, P.A. profile picture","contentUrl":"https://dyn.mktgcdn.com/p/64kJf34REdR710Jt4LtuKoZcn0b0KwUDBXiu8gHHf7Y/fit=crop,gravity=auto,width=480,height=480"},"isAcceptingNewPatients":true,"knowsLanguage":[{"@type":"Language","name":"English"}],"parentOrganization":{"@type":"MedicalOrganization","name":"Sutter Health","@id":"https://www.sutterhealth.org/#medicalorganization","url":"https://www.sutterhealth.org"},"practicesAt":[{"@type":"MedicalClinic","url":"https://www.sutterhealth.org/find-location/facility/san-mateo-care-center-1043247262","name":"San Mateo Care Center","address":{"@type":"PostalAddress","streetAddress":"50 South San Mateo Drive","addressLocality":"San Mateo","addressRegion":"CA","postalCode":"94401","addressCountry":"US"},"geo":{"@type":"GeoCoordinates","latitude":37.566113299020486,"longitude":-122.32644657285475},"telephone":"(650) 652-8500","faxNumber":"(650) 652-8501","hasMap":{"@type":"Map","url":"https://www.google.com/maps/search/?api=1&query=50+South+San+Mateo+Drive+San+Mateo%2C+CA+94401+US&sll=37.566113299020486%2C-122.32644657285475"},"image":"https://a.mktgcdn.com/p/AnZqfTOpULri7q6wIMOgR2wP6X2QyHi5XnZbn7r0RA0/2592x1728.jpg","openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":"Sunday","opens":"00:00","closes":"00:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":"Monday","opens":"08:00","closes":"17:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":"Tuesday","opens":"08:00","closes":"17:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":"Wednesday","opens":"08:00","closes":"17:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":"Thursday","opens":"08:00","closes":"17:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":"Friday","opens":"08:00","closes":"17:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":"Saturday","opens":"00:00","closes":"00:00"}]}],"medicalSpecialty":[{"@type":"MedicalSpecialty","name":"Internal Medicine","sameAs":["https://schema.org/PrimaryCare"]}],"memberOf":[{"@type":"Organization","name":"Palo Alto Foundation Medical Group"},{"@type":"Organization","name":"Mills-Peninsula Division"}],"name":"Caitlin De Castro, P.A.","potentialAction":{"@type":"ReserveAction","name":"Schedule appointment","target":{"@type":"EntryPoint","urlTemplate":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744","actionPlatform":["https://schema.org/DesktopWebPlatform","https://schema.org/MobileWebPlatform"]}},"telephone":"(650) 652-8500","mainEntityOfPage":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744","url":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744","usNPI":"1265219075","sameAs":["https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744#Person","https://npiregistry.cms.hhs.gov/provider-view/1265219075"]} ``` ```json {"@context":"https://schema.org","@type":"Person","@id":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744#Person","name":"Caitlin De Castro, P.A.","familyName":"De Castro","gender":"Female","givenName":"Caitlin","hasOccupation":{"@type":"Occupation","name":"Physician Assistant"},"honorificSuffix":"P.A.","jobTitle":"Physician Assistant","sameAs":"https://www.sutterhealth.org/find-provider/caitlin-de-castro-2064126744","knowsLanguage":[{"@type":"Language","name":"English"}],"worksFor":{"@type":"MedicalOrganization","name":"Sutter Health","@id":"https://www.sutterhealth.org/#medicalorganization","url":"https://www.sutterhealth.org"}} ```