--- title: "Dr. John A. Ritzo | Family Doctor in San Mateo, CA | Sutter Health" description: "Dr. John A. Ritzo, M.D. practices Family Medicine in San Mateo, CA. Accepting new patients." url: "https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204" --- 1. [Home](https://www.sutterhealth.org/) / 2. [Find a provider](https://www.sutterhealth.org/find-provider) / 3. John A. Ritzo, M.D. ![John A. Ritzo, M.D.](https://www.sutterhealth.org/static/images/fallback-provider.png) # John A. Ritzo, M.D. ## Family Medicine - New patients, please call for availability [101 South San Mateo Dr. Ste 206San Mateo, CA 94401](https://www.google.com/maps/dir/?api=1&destination=101+South+San+Mateo+Dr.+Ste+206+San+Mateo%2C+CA+94401+US) ## Schedule appointment [650-343-4003](tel:+16503434003) Jump to: - [About](https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204#provider-about) - [Locations](https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204#provider-locations) - [Services](https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204#provider-services) ## About Dr. Ritzo Languages English Gender Male ## Affiliations ### Hospitals - Sutter Mills Peninsula Medical Center ## Care locations 101 South San Mateo Dr. Ste 206 San Mateo, CA 94401 [Get directions](https://www.google.com/maps/dir/?api=1&destination=101+South+San+Mateo+Dr.+Ste+206+San+Mateo%2C+CA+94401+US) [650-343-4003](tel:+16503434003) ## 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 - [Family medicine](https://www.sutterhealth.org/services/family-medicine) ### 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/dr-john-a-ritzo-2026309204#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":"John A. Ritzo, M.D."}]} ``` ```json {"@context":"https://schema.org","@type":"IndividualPhysician","@id":"https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204","areaServed":[{"@type":"GeoCircle","geoMidpoint":{"@type":"GeoCoordinates","latitude":37.5660488033485,"longitude":-122.3254037411045},"geoRadius":"80467"}],"availableService":[{"@type":"MedicalProcedure","name":"Annual physical exam"}],"description":"Dr. John A. Ritzo, M.D. practices Family Medicine in San Mateo, CA. Accepting new patients.","hospitalAffiliation":[{"@type":"Hospital","name":"Sutter Mills Peninsula Medical Center"}],"identifier":{"@type":"PropertyValue","propertyID":"US NPI","value":"1326780115"},"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","address":{"@type":"PostalAddress","streetAddress":"101 South San Mateo Dr. Ste 206","addressLocality":"San Mateo","addressRegion":"CA","postalCode":"94401","addressCountry":"US"},"geo":{"@type":"GeoCoordinates","latitude":37.5660488033485,"longitude":-122.3254037411045},"telephone":"(650) 343-4003","hasMap":{"@type":"Map","url":"https://www.google.com/maps/search/?api=1&query=101+South+San+Mateo+Dr.+Ste+206+San+Mateo%2C+CA+94401+US&sll=37.5660488033485%2C-122.3254037411045"}}],"medicalSpecialty":[{"@type":"MedicalSpecialty","name":"Family Medicine","sameAs":["https://schema.org/PrimaryCare"]}],"memberOf":[{"@type":"Organization","name":"Sutter Mills Peninsula Medical Center"}],"name":"John A. Ritzo, M.D.","telephone":"(650) 343-4003","mainEntityOfPage":"https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204","url":"https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204","usNPI":"1326780115","sameAs":["https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204#Person","https://npiregistry.cms.hhs.gov/provider-view/1326780115"]} ``` ```json {"@context":"https://schema.org","@type":"Person","@id":"https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204#Person","name":"John A. Ritzo, M.D.","additionalName":"A.","familyName":"Ritzo","gender":"Male","givenName":"John","hasOccupation":{"@type":"Occupation","name":"Family Doctor"},"honorificPrefix":"Dr.","honorificSuffix":"M.D.","jobTitle":"Physician","sameAs":"https://www.sutterhealth.org/find-provider/dr-john-a-ritzo-2026309204","knowsLanguage":[{"@type":"Language","name":"English"}],"worksFor":{"@type":"MedicalOrganization","name":"Sutter Health","@id":"https://www.sutterhealth.org/#medicalorganization","url":"https://www.sutterhealth.org"}} ```