Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary M. Carrington, P.A.
Physician Assistant in Columbia, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669401055
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Registry record
Entity type Individual (Type 1)
Name Mary M. Carrington
Credential P.A.
Sex Female
Practice address 5450 Knoll North Dr, Suite 250, Columbia, MD, 21045
Phone (410) 964-6200
Fax (410) 964-6392
Enumeration date Jun 30, 2006
Last updated in NPPES Dec 11, 2007
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License C0000013 (MD) 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
Is NPI 1669401055 active?
Yes, as of the latest NPPES snapshot, NPI 1669401055 is active (record last updated 2007-12-11).
How do I verify Mary Carrington's NPI record?
Cross-check NPI 1669401055 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Peter Cohen Child & Adolescent Psychiatry Physician · Columbia, MD NPI 1033118617 F Carl Schneider Pediatrics Physician · Columbia, MD NPI 1922074715 Michael Kelemen Cardiovascular Disease Physician · Columbia, MD NPI 1023075538 Ho-Lai Feng Internal Medicine Physician · Columbia, MD NPI 1720033665 Joanne Silbert-Flagg Pediatric Nurse Practitioner · Columbia, MD NPI 1306872148 Gloria Forgash Advanced Practice Midwife · Columbia, MD NPI 1659307049 Anne Thompson Registered Nurse · Columbia, MD NPI 1912935636 Irma Bensinger Family Medicine Physician · Columbia, MD NPI 1114956968
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-11.