Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Ann Marie Butterworth, CRNP
Nurse Practitioner in Baltimore, MD · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1316937329
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Registry record
Entity type Individual (Type 1)
Name Ms. Ann Marie Butterworth
Credential CRNP
Sex Female
Practice address 711 Maiden Choice Ln, Baltimore, MD, 21228
Phone (410) 247-5602
Fax (410) 242-1756
Enumeration date Oct 21, 2005
Last updated in NPPES Dec 5, 2014
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R082382 (MD) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 960702100 | Medicaid | MD | - |
| 138CSE-60656501 | Other | - | BCBS |
| 238200800 | Medicaid | MD | - |
| T016-0028 | Other | - | BCBS-DC |
| 0943ER-606565-02 | Other | - | CAREFIRST BCBS OF MD |
| 138CER-606565-01 | Other | - | CAREFIRST BCBS OF MD |
| 60656501 | Other | - | EVERCARE |
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 Ann Butterworth?
Ann Butterworth 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-05.