Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Alexandra E Maltby, PA
Physician Assistant in Newton, MA · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821516972
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ms. Alexandra E Maltby
Credential PA
Sex Female
Practice address 2014 Washington St, Newton, MA, 02462
Phone (617) 243-3724
Enumeration date Sep 8, 2017
Last updated in NPPES Sep 6, 2018
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA6197 (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
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 Alexandra Maltby?
The National Provider Identifier (NPI) for Alexandra Maltby is 1821516972, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alexandra Maltby practice?
The practice location on file with NPPES is in Newton, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Jennifer Balukonis Nurse Practitioner · Newton, MA NPI 1144210261 Judy Yang Internal Medicine Physician · Newton, MA NPI 1205818721 David Wyler Internal Medicine Physician · Newton, MA NPI 1689657686 Tarik Alkasab Diagnostic Radiology Physician · Newton, MA NPI 1154305803 Mary Jane Estrada-Lyder Nurse Practitioner · Newton, MA NPI 1427033257 Teresa Cahill Body Imaging Physician · Newton Lower Falls, MA NPI 1417935214 Daniel Mcdonald Diagnostic Radiology Physician · Newton, MA NPI 1053399857 Joseph Ferrucci Diagnostic Radiology Physician · Newton, MA NPI 1831177617
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-06.