Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Allysa Evelyn Chadderdon, PA
Physician Assistant in Methuen, MA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023367174
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Registry record
Entity type Individual (Type 1)
Name Allysa Evelyn Chadderdon
Credential PA
Sex Female
Practice address 5 Branch St Ste 100, Methuen, MA, 01844
Phone (978) 620-2020
Fax (978) 620-2299
Enumeration date Sep 5, 2012
Last updated in NPPES Oct 21, 2022
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA4814 (MA) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 03497550 | Medicaid | NY | - |
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 Allysa Chadderdon?
The National Provider Identifier (NPI) for Allysa Chadderdon is 1023367174, a Type 1 (individual) record in the CMS NPPES registry.
Where does Allysa Chadderdon practice?
The practice location on file with NPPES is in Methuen, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Taylor Ortiz Medical Oncology Physician · Methuen, MA NPI 1306065446 Ahmad Kassem Medical Oncology Physician · Methuen, MA NPI 1952805004 Christine Hart Brown Family Nurse Practitioner · Methuen, MA NPI 1871182980 Samantha Hanley Family Nurse Practitioner · Methuen, MA NPI 1629800974 Alexxis Talbot Family Nurse Practitioner · Methuen, MA NPI 1043158967 Adam Audet Oncology Registered Nurse · Methuen, MA NPI 1982520433
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-21.