Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Aimee Elizabeth Foster Keller, MS, FNP-BC
Nurse Practitioner in Waltham, MA · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447804216
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Registry record
Entity type Individual (Type 1)
Name Aimee Elizabeth Foster Keller
Credential MS, FNP-BC
Sex Female
Practice address 52 Second Ave Ste 520, Waltham, MA, 02451
Phone (781) 487-6000
Fax (781) 487-2978
Enumeration date Jul 30, 2019
Last updated in NPPES Jun 3, 2024
Taxonomy & licenses
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2274206 (MA) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2274206 (MA) Primary
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 Aimee Keller?
The National Provider Identifier (NPI) for Aimee Keller is 1447804216, a Type 1 (individual) record in the CMS NPPES registry.
Where does Aimee Keller practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-03.