Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alysia Maria Sierra, PSY.D
Clinical Psychologist in Arnold, MD · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720458946
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Alysia Maria Sierra
Credential PSY.D
Sex Female
Practice address 1298 Bay Dale Dr Ste 211, Arnold, MD, 21012
Phone (410) 919-4904
Enumeration date Sep 30, 2015
Last updated in NPPES Nov 21, 2023
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 05597 (MD) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD 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 Alysia Sierra's NPI record?
Cross-check NPI 1720458946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1720458946 active?
Yes, as of the latest NPPES snapshot, NPI 1720458946 is active (record last updated 2023-11-21).
Other providers at this practice address
Browse all → Kimberly Gillette Social Worker · Arnold, MD NPI 1679881726 Laura Reagan Clinical Social Worker · Arnold, MD NPI 1376886994 Holly Hiltner-Fullmer Clinical Psychologist · Arnold, MD NPI 1356777106 Tiffany Jones-Rouse Clinical Social Worker · Arnold, MD NPI 1740611599 Fusion Psychological and Consulting Services, LLC Clinical Psychologist · Arnold, MD NPI 1942739834 Jessi Collins Therapy LLC Community/Behavioral Health Agency · Arnold, MD NPI 1548745573 Rhiannon Gruppuso Clinical Social Worker · Arnold, MD NPI 1689286791 Annapolis Family Acupuncture Acupuncturist · Arnold, MD NPI 1194396879
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-21.