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Credentials · Training · Licensure

Curriculum Vitae

The dental education, orthodontic residency training, academic appointments, honours and Florida licensure of the four orthodontists who treat patients at our Aventura practice.

  • Four orthodontists
  • Six universities
  • Every licence and NPI verifiable

Who treats patients at Orthodontic Options

Orthodontic Options is an orthodontic practice at 2999 NE 191st Suite 809, Aventura, Florida, staffed by four orthodontists — Dr. Sibel Eljach, DMD, MS, Dr. Karen Nachum, DMD, Dr. Melanie Ross, DMD and Dr. Osuri Yau, DDS, MDS. All four hold an active Florida dental licence and are registered in the national provider registry under the specialty taxonomy for Orthodontics and Dentofacial Orthopedics (1223X0400X). Between them they trained at the University of Illinois at Chicago, Nova Southeastern University, Tufts University, the University of Panama and the University of Puerto Rico. The practice treats children, teens and adults with braces and clear aligners, and offers a free consultation that includes a free digital panoramic X-ray.

  • 4 Orthodontists on staff
  • 4 Active Florida dental licences
  • 6 Universities in their training
  • 2 Omicron Kappa Upsilon inductees

Education, training and honours

Each record below lists only what the practice and the national provider registry state. Where a doctor has no entry for a section — an academic appointment, an honour, a second language — that section is left out rather than filled in.

Dr. Sibel Eljach, orthodontist at Orthodontic Options in Aventura

Dr. Sibel Eljach, DMD, MS

Orthodontist · Orthodontic Options, Aventura, Florida

  • Florida licenceDN24832
  • NPI1609498641

Education & training

  • University of Illinois at Chicago College of Dental MedicineDoctor of Dental Medicine
  • University of Illinois at ChicagoOrthodontics Residency — graduated at the top of her class

Honours & awards

  • Omicron Kappa Upsilon Honor Society — inducted
  • Best Resident Award, American Institute of Orthodontics
  • Research and clinical awards during residency

Society membership

  • Omicron Kappa Upsilon Honor Society

Clinical experience

  • Has treated thousands of patients in South Florida and Chicago.

Read Dr. Eljach’s full biography

Dr. Karen Nachum, orthodontist at Orthodontic Options in Aventura

Dr. Karen Nachum, DMD

Orthodontist · Orthodontic Options, Aventura, Florida

  • Florida licence26054
  • NPI1851073027

Education & training

  • Nova Southeastern UniversityDoctor of Dental Medicine (DMD)

Clinical focus

  • Treatment planning tailored to each patient
  • Traditional braces
  • Clear aligners, including Invisalign

Community involvement

  • Takes part in community outreach programmes
  • Oral health education and awareness

Read Dr. Nachum’s full biography

Dr. Melanie Ross, orthodontist at Orthodontic Options in Aventura

Dr. Melanie Ross, DMD

Orthodontist · Orthodontic Options, Aventura, Florida

  • Florida licenceDN24791
  • NPI1184282394

Education & training

  • University of Western OntarioBachelor of Science, specialisation in kinesiology (undergraduate)
  • Nova Southeastern UniversityDoctor of Dental Medicine — graduated with highest honours in her class
  • Tufts UniversityOrthodontics Residency Program

Honours & awards

  • Omicron Kappa Upsilon Honor Society — elected by the faculty
  • Alpha Omega Scholastic Achievement Award — awarded to a graduating senior with one of the highest scholastic rankings across all four years

Society membership

  • Omicron Kappa Upsilon Honor Society

Read Dr. Ross’s full biography

Dr. Osuri Yau, orthodontist at Orthodontic Options in Aventura

Dr. Osuri Yau, DDS, MDS

Orthodontist · Orthodontic Options, Aventura, Florida

  • Florida licenceDN19287
  • NPI1548552649

Education & training

  • University of PanamaDoctorate in Dental Surgery
  • University of Puerto RicoMaster of Science and Certificate in Orthodontics

Academic appointment

  • University of PanamaAssociate and Clinical Professor in Orthodontics

Languages

  • English
  • Spanish

Clinical experience

  • Orthodontist at Orthodontic Options since 2011.

Read Dr. Yau’s full biography

Licences and registry numbers

Every number below can be checked independently. The NPI links open each doctor’s own record in the federal NPPES provider registry, which lists their primary specialty taxonomy and their Florida licence number. This page was last reviewed against that registry on 2 September 2026.

Doctor Specialty (NPPES taxonomy) Florida dental licence NPI Registry record
Dr. Sibel Eljach, DMD, MS Orthodontics and Dentofacial Orthopedics · 1223X0400X DN24832 1609498641 Open NPPES record
Dr. Karen Nachum, DMD Orthodontics and Dentofacial Orthopedics · 1223X0400X 26054 1851073027 Open NPPES record
Dr. Melanie Ross, DMD Orthodontics and Dentofacial Orthopedics · 1223X0400X DN24791 1184282394 Open NPPES record
Dr. Osuri Yau, DDS, MDS Orthodontics and Dentofacial Orthopedics · 1223X0400X DN19287 1548552649 Open NPPES record

Orthodontic Options, 2999 NE 191st Suite 809, Aventura, FL 33180 · (305) 466-2809. Every doctor listed on this page practises at that address.

Specialty and scope of practice

Orthodontic Options is an orthodontics-only practice: all four doctors share the same primary specialty registration, and the practice does not provide general dentistry. For complex cases that call for a different specialty, patients can be seen at the practice’s sister office, Dental Options, next door, where CBCT 3D imaging and other specialists are available.

Treatments the practice provides

  • Traditional metal braces
  • Ceramic (clear) braces
  • Invisalign clear aligner therapy
  • Orthodontics for children and teens
  • Adult orthodontics
  • Retainers and retention
  • Emergency orthodontic care

Clinical vocabulary

  • Orthodontics and dentofacial orthopedics
  • Fixed appliance therapy
  • Self-ligating brackets
  • Lingual (behind-the-teeth) braces
  • Clear aligner therapy
  • Interceptive and early treatment
  • Retention and post-treatment stability

Imaging and equipment

  • Digital intraoral scanner
  • Panoramic digital radiography
  • Cephalometric digital radiography
  • CBCT 3D imaging (available at Dental Options)

Meet the doctors behind these credentials.

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