Meet the team

At Harley Street Dental & Implant Clinic our highly skilled, friendly team shares the same single vision: we put you first. Together, we are dedicated to providing you with a first class experience, from the comfort of our reception to the very latest innovations in dental technology. We make sure you have the best possible care from the second you walk through the door.

Our Harley Street team 

We believe first impressions count which is why our practice team is the heart of Harley Street Dental & Implant Clinic. Our dedicated team love to better understand your personal preferences to ensure you feel comfortable before commencing your journey with us.

Find out more about each of our practice team members below.


Dr James C.F. Invest

Specialist in Prosthodontics
Invisalign provider

MRD RCS (Eng) 2005, MClinDent (Lond) 2003, FDS RCS (Eng) 1999, BDS (Lond) 1995
GDC No. 70139


Dr Ali Parvizi

Specialist in Prosthodontics

BDS (Lond) 1992, MSc (Iowa) 1998, Cert. in Prosthodontics (Iowa 1998)
GDC No. 68472


Dr Sonia Joshi 

Registered Specialist in Periodontics

BDS (Hons) 2002, MSc (Perio), MClinDent
MFDS RCS (Eng. 2005), MRD RCS (Ed)
GDC No. 81250

Alis Surgery


Dr George Tsolakides 

Special Interest in Prosthodontics

BDS (1995)
MClinDent FRPros (2019)
GDC No. 71091


Dr Louis McArdle

Consultant Oral Surgeon Specialist in Oral Surgery

GDC No. 62161


Dr Sharon Stern 

Specialist in Endodontics

BDS University of Witwatersrand 1999
GDC No. 76799


Professor Andrew Eder

Specialist in Restorative Dentistry and Prosthodontics

GDC No. 61851


Professor Francesco D'Aiuto

Specialist in Periodontics

DMD, MClinDent(Perio), PhD, MRD RCS(Eng) RCPS (Glasg), FDS RCPS (Glasg)

GDC No. 78909


Dr Konstantina Dina Dedi

Specialist in Prosthodontics

DipDS 1994, Prosth & MS (Oral Biology) UMKC-USA 1998, Max/facial Prosthetics-Dental Oncology Univ.of TX USA 1998, Diplomate American Board of Prosthodontics, FACP 2002, Director Aesthetic Dentistry Programmes, UCL Eastman Dental Institute, London U.K.

GDC No. 109911

Dental Hygienist

Tanya Viehoff 

Dental Hygienist

CEB Dip Dent Hygiene 2000
GDC No. 5627 

Dental Hygienist

Nora Simmonds 

Dental Hygienist
CEB Cert in Dental Hygiene 1984
GDC No. 2737

Dental Hygienist
Dental Therapist

Nadia Khaliq

Dental Hygienist 
Dental Therapist
MSc 2017, BSc Hons 2016, Dip. Dental Therapy RCS (Eng) 2002, Dip. Dental Hygiene RCS (Eng) 2002
GDC No. 6159

Dental Hygienist
Dental Therapist

Charlotte Carling

Dental Hygienist
Dental Therapist

Dip Dent Therapy University of Bristol 2011 
CEB Cert in Dental Hygiene 1990
GDC no. 3864 

Dental Hygienist
Dental Therapist

Niki Singleton

Dental Hygienist
Dental Therapist

Diploma Dental Hygiene Royal College of Surgeons Of England 2013
Diploma Dental Therapy Royal College of Surgeons Of England 2013
National Certificate NEBDSA 2000

GDC No. 118533

Dental Hygienist
Dental Therapist

Ruth Glover

Dental Hygienist
Dental Therapist

Diploma in Dental Hygiene 2001
Diploma Dental Therapy Royal College of Surgeons Of England 2001
Final Certification in Dental Technology City & Guilds 1984

GDC No. 5934

Also in this section

The care of our patients is always our primary concern.

Next steps

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Portman Dental Care Awards

Fmc Logo 2019 Winner Oby M25
Award Logo 2018
Dental Industry Award - Portman Dental Care
Private Dentistry Awards - Portman Dental Care
The Dentistry Awards - Portman Dental Care
Elite Practice Award - Portman Dental Care