SQL Logic: RevFlow New Patient

Use the following logic to filter data to only include new patients.
select distinct c.company_name as "Brand Partner", 
pos.pos_name as "Location", 
c.company_id as "Company ID", 
pos.place_of_service_id as "POS ID",
p.patient_id as "Account #", 
p.first_name as "First Name", 
p.last_name as "Last Name", 
p.dob as "DOB", 
p.phone as "Phone", 
p.email as "Email", 
v.date_of_service as "DOS", 
rp.last_name ||', '|| rp.first_name AS "Referring Physician", 
rp.npi as "NPI", ca.injury_desc as "Case Desc"
  from "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_D_VISIT" v
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_D_PATIENT" p
    on v.patient_id = p.patient_id
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_A_COMPANY" c
    on v.company_id = c.company_id
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_C_PLACE_OF_SERVICE" pos
    on v.pos_code = pos.place_of_service_id::varchar
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_C_REFERRING_PHYSICIAN" rp
    on v.md_code = rp.referring_physician_id
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_D_CHARGE" ch
    on p.patient_id = ch.patient_id
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_C_PROCEDURE_CODE" pc\
    on pc.proc_code = ch.proc_code
   and pc.company_id = ch.company_id
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_C_REVENUE_CENTER" rc\
    on rc.revenue_center_id = pc.revenue_center_id\
   and rc.revenue_center_code = '1'
  join "REPORTING_DB"."PUBLIC"."SVW_REVFLOW_D_CASE" ca\
    on v.case_id = ca.case_id 
  where  ch.date_of_Service::Date between '2/1/2021' and '2/15/2021'
  and gpms_code in ()
  and rc.revenue_center_code = 1
  and ch.is_Active='True'
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