Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Katharine Anderson, DO
Pediatrics Physician in Methuen, MA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659951598
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Katharine Anderson
Credential DO
Sex Female
Practice address 413 Broadway, Methuen, MA, 01844
Phone (978) 683-1974
Fax (978) 689-9710
Enumeration date Apr 14, 2021
Last updated in NPPES May 9, 2025
Taxonomy & licenses
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO 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
How do I verify Mary Anderson's NPI record?
Cross-check NPI 1659951598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1659951598 active?
Yes, as of the latest NPPES snapshot, NPI 1659951598 is active (record last updated 2025-05-09).
Other providers at this practice address
Browse all → David Avila Pediatrics Physician · Methuen, MA NPI 1295707834 Richard Laspina Pediatrics Physician · Methuen, MA NPI 1144292616 Sherrill Davis Pediatrics Physician · Methuen, MA NPI 1215909783 Lawrence Lerman Pediatrics Physician · Methuen, MA NPI 1588636112 Marilyn Cormier Pediatric Nurse Practitioner · Methuen, MA NPI 1922070499 Pediatric Professional Associates, PC Specialist · Methuen, MA NPI 1225158405 Brett Lombardi Orthopedic Physical Therapist · Methuen, MA NPI 1710191481 Advanced Dental Professionals,PC Pediatric Dentistry · Methuen, MA NPI 1760755417
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-09.