About Us
Rooted in Community. Driven by Clinical Excellence.
Siebiti Wellness Center is a nursing-led agency incorporated in the District of Columbia, committed to providing person-centered Home and Community-Based Services for people with intellectual and developmental disabilities.
Who We Are
Our Story
Kaddie Kallon Nursing, LLC, operating as Siebiti Wellness Center, was founded on a deeply held belief: that every person with an intellectual or developmental disability deserves individualized, dignified, and community-integrated support — guided by what is important to and important for them.
Our founder and CEO, Dr. Kaddie Kallon, DNP, PMHNP-BC, FNP-C, is a Doctor of Nursing Practice with dual board certification in both psychiatric-mental health and family practice. She earned her Doctorate of Nursing Practice from Rocky Mountain University of Health Professions and completed her psychiatric-mental health nurse practitioner training at Chamberlain College of Nursing. She holds board certification through both the American Nurses Credentialing Center and the American Academy of Nurse Practitioners Certification Board, and is licensed to practice in the District of Columbia and Maryland. Her dual-scope clinical background — spanning psychiatric care, primary care, and psychotherapy — gives Siebiti Wellness Center a clinical foundation that few community-based IDD agencies can match.
This dual certification allows Dr. Kallon to approach mental health through a comprehensive primary care lens — blending physical health awareness with psychotherapy to deliver whole-person, clinically grounded care. Patients consistently express high satisfaction with her compassionate manner, clear communication, diligent follow-up, and the supportive environment she creates where individuals feel genuinely heard.
Our leadership team brings professional experience in nursing, behavioral health, clinical oversight, medication management, care coordination, quality management, incident review, and regulatory compliance — the full spectrum of expertise required to deliver safe, effective, and compliant HCBS waiver services in Washington, DC.
Operating under the DC DDA HCBS Medicaid Waiver Program, we have built every operational system — from governance and staffing to quality management and rights protection — to meet and exceed DDS/DDA and Medicaid standards. We serve adults with intellectual and developmental disabilities in Northeast DC and across the District, delivering supports that are individualized, community-integrated, and clinically sound.
Our Core Values
Dignity & Respect
Every person we serve is treated with unconditional respect. We honor individuality, personal history, and the full humanity of each individual.
Self-Determination
We support each person in exercising control over daily routines, activities, relationships, personal resources, and living arrangements.
Community Integration
We promote meaningful relationships, integrated community participation, and access to employment, education, and civic life.
Clinical Excellence
Our nursing-led team applies rigorous clinical standards to medication management, health coordination, and behavioral support.
Regulatory Compliance
We build and maintain the governance, financial, staffing, training, and documentation systems required by DDS/DDA and Medicaid.
Continuous Improvement
We implement ongoing quality-improvement processes, incident review, and staff competency assessment to ensure consistently excellent care.
Meet the Team
Leadership Team
Our leaders bring credentialed expertise across nursing, clinical oversight, and quality management — with direct experience serving people with intellectual and developmental disabilities.
Dr. Kaddie Kallon
Chief Executive Officer
Dr. Kaddie Kallon is a Doctor of Nursing Practice and dual board-certified advanced practice nurse, holding both the Psychiatric-Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-C) credentials — a rare combination that allows her to address behavioral health, physical health, and psychotherapy within a single, unified care model. She earned her DNP from Rocky Mountain University of Health Professions and completed her psychiatric-mental health training at Chamberlain College of Nursing, and is licensed to practice in both DC and Maryland. As founder and CEO, she brings that same clinical rigor to agency leadership — overseeing strategic direction, quality standards, and the delivery of person-centered HCBS waiver services for adults with IDD across Washington, DC.
Luvidet Luseni
Director of Nursing
Luvidet Luseni is a Registered Nurse serving as Director of Nursing at Siebiti Wellness Center. She brings professional experience in community-based nursing, behavioral health support, and clinical oversight for individuals with intellectual and developmental disabilities. In her role, Luvidet oversees nursing protocols, staff clinical competencies, medication management systems, and health coordination for individuals served.
Fatmata Nellay
Quality Management Director
Fatmata Nellay is a Licensed Practical Nurse serving as Quality Management Director at Siebiti Wellness Center. She brings expertise in quality management, incident review, regulatory compliance, and continuous quality-improvement processes. Fatmata leads the agency's quality assurance systems, documentation standards, and compliance monitoring to ensure all services meet DDS/DDA and Medicaid requirements.
Compliance & Standards
Our Regulatory Commitment
Individuals and families have the right to choose their own providers. Siebiti Wellness Center does not accept referrals directly from DDS — all placements are made through the individual's Support Coordinator based on assessed needs, preferences, and ISP goals. We maintain the full operational infrastructure required by DDS/DDA and Medicaid: governance, financial management, staffing, training, clinical oversight, emergency preparedness, quality management, incident management, rights protection, and documentation.
- DC incorporation — Kaddie Kallon Nursing, LLC d/b/a Siebiti Wellness Center
- Providing services under the DC DDA HCBS Medicaid Waiver Program
- Full HCBS Settings Rule compliance — integrated, community-based service delivery
- Person-centered planning and Individual Support Plan alignment for every individual
- Background screening, exclusion screening, and credential verification for all personnel
- DC DDA-required DSP training, CPR/First Aid certification, and ongoing competency assessment
- Nursing-led clinical oversight: health assessments, medication management, and physician coordination
- Robust incident reporting, root-cause analysis, and corrective action planning
Learn About Our Services
Explore the HCBS waiver services Siebiti Wellness Center provides to adults with intellectual and developmental disabilities in Washington, DC.