Your physician would be correct, as long as the subspecialties has a different taxonomy code. But most important is that the provider was credential with the subspecialty taxonomy.
20
Physician/Orthopedic Surgery
207X00000X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery
207XS0114X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Adult
Reconstructive Orthopaedic Surgery
207XX0004X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Foot and Ankle
Surgery
207XS0106X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Hand Surgery
207XS0117X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Orthopaedic
Surgery of the Spine
207XX0801X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Orthopaedic
Trauma
207XP3100X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Pediatric
Orthopaedic Surgery
207XX0005X - Allopathic & Osteopathic Physicians/Orthopaedic Surgery, Sports Medicine
You can find the taxonomy listing on CMS website:
http://www.cms.gov/Medicare/Provide...iderSupEnroll/Downloads/TaxonomyCrosswalk.pdf