Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Caitlin Mase

Emergency Medicine Physician in Annapolis, MD · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1134573736

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Registry record

Entity type Individual (Type 1)

Name Caitlin Mase

Sex Female

Practice address 2001 Medical Pkwy, Annapolis, MD, 21401

Phone (443) 481-1366

Enumeration date Apr 20, 2016

Last updated in NPPES Jan 29, 2020

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License D0087375 (MD) 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.

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Frequently asked questions

How do I verify Caitlin Mase's NPI record?

Cross-check NPI 1134573736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1134573736 active?

Yes, as of the latest NPPES snapshot, NPI 1134573736 is active (record last updated 2020-01-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-29.