Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Darden Mason, DNP, FNP-BC
Nurse Practitioner in Berlin, MD · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1407685829
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mary Darden Mason
Credential DNP, FNP-BC
Sex Female
Practice address 10324 Old Ocean City Blvd, Berlin, MD, 21811
Phone (410) 629-0041
Fax (410) 629-0544
Enumeration date Aug 1, 2024
Last updated in NPPES Feb 10, 2025
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R266414 (MD) Primary
DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses.
About the DNP 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 1407685829 active?
Yes, as of the latest NPPES snapshot, NPI 1407685829 is active (record last updated 2025-02-10).
How do I verify Mary Mason's NPI record?
Cross-check NPI 1407685829 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 → Edwin Castaneda Internal Medicine Physician · Berlin, MD NPI 1063412385 Edwin T. Castaneda, MD PA Internal Medicine Physician · Berlin, MD NPI 1265627418 Alison Diesel Medical Physician Assistant · Berlin, MD NPI 1871987818 Atlantic General Hospital Corporation Internal Medicine Physician · Berlin, MD NPI 1316765951 Tidalhealth Primary Care, LLC Family Medicine Physician · Berlin, MD NPI 1316809478
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-10.