National Study Group on Chronic Disorganization (NSGCD)
The members of this group are also members of NAPO, but specialize in specific issues such as ADD, Hoarding, OCD, brain injuries, chronic disorganization. They also have different levels of certificate program for those working with the chronically disorganized and they offer on-going education. You can find those organizers where noted below:

Level III Graduates:
Certified Professional Organizer in Chronic Disorganization (CPO-CD)
Level III graduates have been certified by the NSGCD to receive the designation of CPO-CD. Graduates at this level have completed approximately 80 hours of specialized study, training and directed coaching. The individuals listed have also passed a peer review board. To view a list of graduates at this level, click below:

Go to CPO-CD Graduate List

Level II Graduates:
Attention Deficit Disorder Specialists Graduates
Graduates at this level have completed approximately 65 hours of study and passed the ADD Exam in addition to having earned their CD Specialist designation. To view a list of graduates at this level, click below.

Go to ADD Specialist List

Level II Graduates:
Chronic Disorganization Specialists
Graduates at this level have completed approximately 25 hours of study and passed the General Exam. To view a list of graduates at this level, click below:

Go to CD Specialists List

Level I Graduates:
Certificate of Study in Chronic Disorganization
Graduates at this level have completed 6 hours of training in Chronic Disorganization. To view a list of graduates at this level, click below.

Go to CS in CD List

Additional information from their website (nsgcd.org):

CD Referrals
The National Study Group on Chronic Disorganization provides limited assistance with locating professional organizers who have some understanding and knowledge of Chronic Disorganization (CD) issues. Since CD is relatively a new concept the availability of NSGCD members with knowledge of CD in your geographic area may be limited.

For further assistance with your referral, please send your name, address and phone numbers (day/evening) and e-mail to our Referral Coordinator. So that we may better serve you, please indicate your specific needs - home, home office, business or workplace, student assistance.
cdreferral@nsgcd.org.

National Study Group on Chronic Disorganization Hoarding Scale (pdf)

National

National Association of Professional Organizers (NAPO)
The members of this organization have made a commitment to their profession and have signed a code of ethics to insure personal information will remain confidential. However, they may not all be familiar
with Compulsive Hoarding and the special needs of those clients.

For professional organizers visiting this page:

Collaborative Therapy Providers Project

The NSGCD is compiling names of professional organizers belonging to the NSGCD who are actively working in collaboration with therapists with their clients in their area. Please submit your name, level of NSGCD training and certification, your e-mail address, the name of the therapist(s), and state or
province where you reside.

Please note this specialized contact information will not be made available to the general public. It will be used for research surveying and questionnaires only.
Submit to collaborate@nsgcd.org.