{"googleClientId":"423015028912-3lo9ijjc2r0plqst8iroaq98494bqmti.apps.googleusercontent.com","selectPlanView":false,"isLoggedIn":false,"user":{"is_authenticated":false,"is_doctor":false,"is_sales":false,"pending_verifications":[],"location":{"country":"us","country_name":"united-states"},"is_superuser":false},"bannerData":{"id":2,"message":"\r\n

🇨🇦 Looking for a primary care provider in Canada? We are here to help!

\r\n","severity":"info","persistent":false},"location":null,"doctor":{"slug":"151735/Dr-D.A.-Holder-Hamilton-ON.html","created":"2014-06-14T13:53:30.995599-04:00","modified":"2022-03-08T14:16:12.357691-05:00","id":1967798,"doctor_locations":[{"id":1967696,"primary":true,"verified":true,"source":null,"location":{"id":1967699,"category":"clinic","created":"2014-06-14T13:53:31.017958-04:00","modified":"2014-08-29T00:57:00.393660-04:00","longitude":null,"latitude":null,"slug":"ca-on-hamilton-holder-d-a-dr","city":{"id":214,"province_name":"Ontario","province_slug":"on","country_name":"Canada","country_slug":"ca","cover_images":{"autoxauto":"https://cdn1.ratemds.com/media/locations/country/canada_1.jpg","253x83":"https://cdn1.ratemds.com/media/locations/country/canada_1.jpg_thumbs/v1_at_253x83.jpg"},"modified":"2020-09-09T19:27:25.293468-04:00","created":"2014-06-25T11:34:15.276909-04:00","deleted":false,"slug":"hamilton","name":"Hamilton","cover_image":null,"province":8},"suite_on_display":null,"name":"Holder D a Dr","address":null,"suite":null,"postal_code":"L8H1","city_id":214,"phone_number":null,"website":null,"image":null,"images":{"165x165":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_165x165.7ed2777bc15f.jpg","autoxauto":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_autoxauto.7ed2777bc15f.jpg","70x70":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_70x70.8dbdd6486c65.jpg","77x77":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_77x77.8dbdd6486c65.jpg","100x100":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_100x100.c205560f7442.jpg"},"rating":{"bestRating":0,"facilities":0,"value":0,"average":0,"count":0,"cleanliness":0,"services":0},"url":"/clinic/ca-on-hamilton-holder-d-a-dr/","geocode_address":"holder d a dr, hamilton, ontario, canada, l8h1"},"location_id":1967699}],"specialty":"cardiologist","specialty_name":"Cardiologist","specialty_name_plural":"Cardiologists","specialty_html_title":"Cardiologist","specialty_html_title_plural":"Cardiologists","name":"D.A. Holder","gender":"M","url":"/doctor-ratings/151735/Dr-D.A.-Holder-Hamilton-ON.html/","facet_url":"/best-doctors/?specialty=cardiologist","rating_url":"https://www.ratemds.com/doctor-ratings/151735/Dr-D.A.-Holder-Hamilton-ON.html/?utm_campaign=dashboard-tools&utm_source=ratemds&utm_medium=link#ratingform","qr_code_url":"https://www.ratemds.com/doctor-ratings/151735/Dr-D.A.-Holder-Hamilton-ON.html/?utm_campaign=&utm_source=ratemds&utm_medium=qr#ratingform","verified":false,"image":null,"images":{"70x70":"//www.ratemds.com/static/img/doctors/doctor-male.png_thumbs/v1_at_70x70.d69087c17b91.jpg","77x77":"//www.ratemds.com/static/img/doctors/doctor-male.png_thumbs/v1_at_77x77.9ef8890927e3.jpg","100x100":"//www.ratemds.com/static/img/doctors/doctor-male.png_thumbs/v1_at_100x100.3f2710d2cc1b.jpg","165x165":"//www.ratemds.com/static/img/doctors/doctor-male.png_thumbs/v1_at_165x165.37040e24c0e4.jpg","32x32":"//www.ratemds.com/static/img/doctors/doctor-male.png_thumbs/v1_at_32x32.e9385504d006.jpg","autoxauto":"//www.ratemds.com/static/img/doctors/doctor-male.png_thumbs/v1_at_autoxauto.37040e24c0e4.jpg"},"full_name":"Dr. D.A. Holder","full_name_specialty":"Dr. D.A. Holder","rating":{"bestRating":5.0,"punctuality":5.0,"knowledge":5.0,"average":5.0,"count":2,"staff":5.0,"helpfulness":5.0},"city_name":"Hamilton, ON","location":{"id":1967699,"category":"clinic","created":"2014-06-14T13:53:31.017958-04:00","modified":"2014-08-29T00:57:00.393660-04:00","longitude":null,"latitude":null,"slug":"ca-on-hamilton-holder-d-a-dr","city":{"id":214,"province_name":"Ontario","province_slug":"on","country_name":"Canada","country_slug":"ca","cover_images":{"autoxauto":"https://cdn1.ratemds.com/media/locations/country/canada_1.jpg","253x83":"https://cdn1.ratemds.com/media/locations/country/canada_1.jpg_thumbs/v1_at_253x83.jpg"},"modified":"2020-09-09T19:27:25.293468-04:00","created":"2014-06-25T11:34:15.276909-04:00","deleted":false,"slug":"hamilton","name":"Hamilton","cover_image":null,"province":8},"suite_on_display":null,"name":"Holder D a Dr","address":null,"suite":null,"postal_code":"L8H1","city_id":214,"phone_number":null,"website":null,"image":null,"images":{"165x165":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_165x165.7ed2777bc15f.jpg","autoxauto":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_autoxauto.7ed2777bc15f.jpg","70x70":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_70x70.8dbdd6486c65.jpg","77x77":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_77x77.8dbdd6486c65.jpg","100x100":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_100x100.c205560f7442.jpg"},"rating":{"bestRating":0,"facilities":0,"value":0,"average":0,"count":0,"cleanliness":0,"services":0},"url":"/clinic/ca-on-hamilton-holder-d-a-dr/","geocode_address":"holder d a dr, hamilton, ontario, canada, l8h1"},"bio":"","accepting_patients":null,"insurance_plans":[],"doctor_schools":[],"doctor_languages":[],"doctor_specialties":[],"doctor_expertises":[],"doctor_insurance_plans":[],"awards":[],"publications":[],"rating_concierge_enabled":false,"rating_emails_subscribed":true,"rating_emails":false,"doctor_ad_specialties":[],"doctor_ad_cities":[],"ad_specialties_cap":0,"ad_cities_cap":0,"DEPRECATED_hide_ratings":false,"sample_rating_comment":"Some doctors are in the profession for the income this man is in it for the outcome. I am forever in your debt sir. You are an extraordinary humanitarian, Dr Holder.","sample_rating_pk":"3456684","customer_id":null,"appointments_available":false,"appointments_enabled":false,"appointments_email":null,"appointments_message":null,"appointments_thank_you_message":null,"accepting_virtual_appointments":null,"gallery_enabled":false,"rating_request_tools_enabled":false,"ratings_disabled":false,"doctor_location_hours":[],"is_promoted_doctor":false,"force_login_to_rate":false,"reviewed_ratings_only":false,"vanity_specialty":"","alert":null,"ranking":{"count":78,"value":48},"is_analytics_dashboard_visible":false,"doctor_locations_on_display":[{"id":1967696,"primary":true,"verified":true,"source":null,"location":{"id":1967699,"category":"clinic","created":"2014-06-14T13:53:31.017958-04:00","modified":"2014-08-29T00:57:00.393660-04:00","longitude":null,"latitude":null,"slug":"ca-on-hamilton-holder-d-a-dr","city":{"id":214,"province_name":"Ontario","province_slug":"on","country_name":"Canada","country_slug":"ca","cover_images":{"autoxauto":"https://cdn1.ratemds.com/media/locations/country/canada_1.jpg","253x83":"https://cdn1.ratemds.com/media/locations/country/canada_1.jpg_thumbs/v1_at_253x83.jpg"},"modified":"2020-09-09T19:27:25.293468-04:00","created":"2014-06-25T11:34:15.276909-04:00","deleted":false,"slug":"hamilton","name":"Hamilton","cover_image":null,"province":8},"suite_on_display":null,"name":"Holder D a Dr","address":null,"suite":null,"postal_code":"L8H1","city_id":214,"phone_number":null,"website":null,"image":null,"images":{"165x165":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_165x165.7ed2777bc15f.jpg","autoxauto":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_autoxauto.7ed2777bc15f.jpg","70x70":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_70x70.8dbdd6486c65.jpg","77x77":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_77x77.8dbdd6486c65.jpg","100x100":"//www.ratemds.com/static/img/locations/clinic.png_thumbs/v1_at_100x100.c205560f7442.jpg"},"rating":{"bestRating":0,"facilities":0,"value":0,"average":0,"count":0,"cleanliness":0,"services":0},"url":"/clinic/ca-on-hamilton-holder-d-a-dr/","geocode_address":"holder d a dr, hamilton, ontario, canada, l8h1"},"location_id":1967699}],"display_ads_on_profile":true}}

Dr. D.A. Holder

Dr. D.A. Holder

Featured News

Follow us

Top Cardiologists