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Private Medical Clinic in London
Doctor Today is a London-based private medical clinic dedicated to delivering high-quality, independent healthcare services to individuals, families, and businesses at accessible costs. Established to prioritise patient care, we offer pre-booked and walk-in appointments without requiring NHS registration, private medical insurance, or visitor status. Our clinical team, led by experienced professionals, provides comprehensive services including GP consultations, antenatal care, sexual health screenings, travel vaccinations, and non-surgical cosmetic procedures. Accredited by the Care Quality Commission, we combine expertise with a patient-centric approach, ensuring timely access to care, with same-day appointments available where possible.

Our services are designed to address diverse medical needs, from routine health assessments to urgent care, supported by advanced diagnostic tools and a commitment to continuous professional development. We prioritise transparency, ethical practice, and clear communication, fostering trust through consistent, personalised care. With a focus on convenience, our central London location and flexible booking options aim to reduce waiting times while maintaining clinical excellence. Our multidisciplinary team collaborates to deliver tailored health solutions, reflecting our mission to redefine private healthcare through accessibility, professionalism, and compassion.
Services
GP consultations Antenatal care Travel vaccines Sexual health tests Wrinkle reduction
Highlights and features
  • We are registered by the Care Quality Commission for clinical excellence.
  • Our team includes experienced GPs and specialists with NHS and private sector expertise.
  • We offer same-day appointments and walk-in availability for urgent care.
  • Our travel clinic provides tailored vaccinations and anti-malarial advice.
  • We combine advanced diagnostics with personalised, patient-centred care.
Associations and certifications
  • Care Quality Commission
What people say
Exceptional service Professional staff Prompt test results Welcoming atmosphere Efficient care
Services
GP consultations
Doctor Today offers comprehensive GP consultations for routine and urgent medical needs. Our experienced GPs provide diagnoses, treatment plans, and referrals to specialists. Patients benefit from same-day appointments, walk-in availability, and continuity of care with dedicated doctors.
Antenatal care
Our private antenatal care package includes regular check-ups, ultrasounds, and specialist referrals up to 34 weeks. We prioritise personalised care, offering guidance on nutrition, birth plans, and postnatal support to ensure maternal and fetal well-being.
Travel vaccines
Doctor Today provides tailored travel vaccinations and anti-malarial medication. Our travel clinic uses the TRAVAX database for destination-specific advice. Consultations are free with qualifying vaccine purchases, ensuring safe, informed travel planning.
Sexual health tests
We offer confidential sexual health screenings, including HIV tests, full STI panels, and pregnancy tests. Results are delivered promptly, with follow-up care and treatment options provided by our specialist team to ensure patient privacy and health.
Wrinkle reduction
Our non-surgical aesthetic services include wrinkle reduction treatments and dermal fillers. Administered by qualified practitioners, these treatments address facial lines and volume loss, delivering natural-looking results with minimal downtime.
People
John Knottenbelt
Medical Director
John Knottenbelt, Doctor Today's Medical Director, is a consultant in Accident and Emergency with over 50 years of experience. He qualified in 1968 and has worked globally, specialising in emergency medicine, pain management, and post-injury care.
Marissa Vassiliou
GP Partner and Practice Manager
Dr Marissa Vassiliou, a GP partner since 2007, specialises in paediatrics and women's health. She qualified in South Africa in 2003, holds a diploma in obstetrics, and focuses on holistic, family-centred care at Doctor Today.
Darshna Patel
GP
Dr Darshna Patel, a GP since 2016, has expertise in diabetes management, women's health, and functional medicine. She completed academic training at Royal Free Hospital and integrates evidence-based practices into patient care.
Debbie Joffe
Practice Nurse Prescriber
Debbie Joffe, a qualified nurse prescriber, specialises in aesthetics and general nursing. With experience in wrinkle reduction treatments, she combines clinical expertise with a compassionate approach to patient care.
Shana Monrose
Receptionist / Office Administrator
Shana Monrose manages administrative operations at Doctor Today. With a background in holistic therapies, she ensures efficient patient coordination and a welcoming environment for all clinic visitors.
Questions
What services does Doctor Today offer?
We provide GP consultations, antenatal care, travel vaccines, sexual health screenings, non-surgical cosmetics, and home visits. Full details are available on our website.
Can I walk in without an appointment?
Walk-ins are welcome during clinical hours, but booking is recommended due to priority given to scheduled appointments. Same-day slots may be available.
Is Doctor Today registered with regulatory bodies?
Yes, we are registered by the Care Quality Commission, ensuring compliance with UK healthcare standards and patient safety regulations.
What emergency care options exist outside clinic hours?
Dial 999 for life-threatening emergencies. For non-urgent issues, contact NHS Direct or leave a message for follow-up when we reopen.
Do you offer corporate healthcare services?
Yes, we provide occupational medicals, employment screenings, and tailored health assessments for businesses and organisations in London.