Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Angela Silverman, R.N.,M.S.N.,C.A.N.P
Nurse Practitioner in Olney, MD · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1124141353
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Registry record
Entity type Individual (Type 1)
Name Mary Angela Silverman
Credential R.N.,M.S.N.,C.A.N.P
Sex Female
Practice address 18111 Prince Philip Dr, Suite 207, Olney, MD, 20832
Phone (301) 573-8535
Fax (301) 570-8536
Enumeration date Apr 10, 2007
Last updated in NPPES Jan 4, 2016
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN43752 (DC) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN 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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Mary Angela Silverman?
Mary Angela Silverman is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Susanne Woodlan Obesity Medicine (Obstetrics & Gynecology) Physician · Olney, MD NPI 1447253679 Hubert Leveque Otolaryngology/Facial Plastic Surgery Physician · Olney, MD NPI 1437152584 Dawn Broderick Internal Medicine Physician · Olney, MD NPI 1801899489 Cynthia Chrosniak Otolaryngology Physician · Olney, MD NPI 1346247616 Heather Schwartzbauer Otolaryngology Physician · Olney, MD NPI 1073510343 Bridgette Hubbard Medical Physician Assistant · Olney, MD NPI 1508851395 Christopher Mays Internal Medicine Physician · Olney, MD NPI 1053306829 April Tweedt Adolescent Medicine (Family Medicine) Physician · Olney, MD NPI 1013905546
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-04.