Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Allyson Marie Byron, FNP-C
Nurse Practitioner in Sullivan, MO · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205600012
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Registry record
Entity type Individual (Type 1)
Name Allyson Marie Byron
Credential FNP-C
Sex Female
Practice address 965 Mattox Dr, Sullivan, MO, 63080
Phone (573) 860-6000
Fax (573) 860-6016
Enumeration date Nov 13, 2023
Last updated in NPPES Jun 25, 2024
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2023045076 (MT) Primary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2023045076 (MO) Secondary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Allyson Byron?
The National Provider Identifier (NPI) for Allyson Byron is 1205600012, a Type 1 (individual) record in the CMS NPPES registry.
Where does Allyson Byron practice?
The practice location on file with NPPES is in Sullivan, MO. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Barbara Dixon-Scott Gastroenterology Physician · Sullivan, MO NPI 1669418216 Steven Fern Gastroenterology Physician · Sullivan, MO NPI 1417982760 Joseph Shumway Obstetrics & Gynecology Physician · Sullivan, MO NPI 1932125242 Mary Bjornstad Family Nurse Practitioner · Sullivan, MO NPI 1104935261 Jaroslaw Michalik Surgery Physician · Sullivan, MO NPI 1093826950 Mark Wasserman Obstetrics & Gynecology Physician · Sullivan, MO NPI 1225130933 Sharon Jackson Clinical Social Worker · Sullivan, MO NPI 1851462097 Roger Rembecki Obstetrics & Gynecology Physician · Sullivan, MO NPI 1396816880
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-25.